Merge remote-tracking branch 'origin/main' into peer-acl-multi-source

# Conflicts:
#	client/internal/acl/manager.go
#	client/ssh/server/test.go

.coderabbit.yaml

@@ -0,0 +1,18 @@
+# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json
+language: en-US
+reviews:
+  profile: chill
+  request_changes_workflow: false
+  high_level_summary: true
+  poem: false
+  review_status: true
+  auto_review:
+    enabled: true
+    drafts: false
+  path_filters:
+    - "!**/*.tsx"
+    - "!**/*.ts"
+    - "!**/*.js"
+    - "!**/*.svg"
+chat:
+  auto_reply: true

.devcontainer/Dockerfile

@@ -6,7 +6,6 @@ RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
         iptables=1.8.9-2 \
         libgl1-mesa-dev=22.3.6-1+deb12u1 \
         xorg-dev=1:7.7+23 \
-        libayatana-appindicator3-dev=0.5.92-1 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
     && go install -v golang.org/x/tools/gopls@latest

.github/dependabot.yml

@@ -0,0 +1,45 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 15
+    groups:
+      actions:
+        patterns:
+          - "*"
+    ignore:
+      # git-town/action v1.3.x crashes on cyclic PR graphs (self-loop main->main
+      # fork PRs) via its topological-sort visualization. Pinned to v1.2.1 in
+      # git-town.yml; block v1.3.x until upstream tolerates cyclic edges.
+      - dependency-name: "git-town/action"
+        update-types:
+          - "version-update:semver-minor"
+          - "version-update:semver-major"
+
+  - package-ecosystem: "gomod"
+    directories:
+      - "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 15
+    groups:
+      aws-sdk:
+        patterns:
+          - "github.com/aws/aws-sdk-go-v2/*"
+      pion:
+        patterns:
+          - "github.com/pion/*"
+      gorm:
+        patterns:
+          - "gorm.io/*"
+      otel:
+        patterns:
+          - "go.opentelemetry.io/*"
+      testcontainers:
+        patterns:
+          - "github.com/testcontainers/testcontainers-go/*"
+      wireguard:
+        patterns:
+          - "golang.zx2c4.com/wireguard*"

.github/workflows/agent-network-e2e.yml

@@ -0,0 +1,68 @@
+name: Agent Network E2E
+
+on:
+  # Nightly at 03:00 UTC, plus on demand from the Actions tab.
+  schedule:
+    - cron: "0 3 * * *"
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  e2e:
+    name: Agent Network E2E
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+
+      - name: Install Go
+        uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6.4.0
+        with:
+          go-version-file: "go.mod"
+
+      # Container-driver builder so the harness can build the combined/proxy/
+      # client images from source with a local layer cache.
+      - name: Set up Buildx
+        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
+
+      # Persist the Docker layer cache across runs. This caches the base, apt,
+      # and go-mod-download layers; the Go compile still re-runs, as BuildKit
+      # mount caches cannot be exported to the GitHub cache.
+      - name: Cache Docker layers
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-anet-e2e-buildx-${{ hashFiles('go.sum', 'combined/Dockerfile.multistage', 'proxy/Dockerfile.multistage', 'e2e/harness/Dockerfile.client') }}
+          restore-keys: |
+            ${{ runner.os }}-anet-e2e-buildx-
+
+      - name: Run agent-network e2e
+        env:
+          # Build the images from source (this branch's code) with the shared
+          # local layer cache.
+          NB_E2E_BUILDX_CACHE: /tmp/.buildx-cache
+          # Provider credentials. Each provider scenario skips if its
+          # token (and URL, for gateways) is unset, so partial coverage is fine.
+          OPENAI_TOKEN: ${{ secrets.E2E_OPENAI_TOKEN }}
+          ANTHROPIC_TOKEN: ${{ secrets.E2E_ANTHROPIC_TOKEN }}
+          VERCEL_URL: ${{ secrets.E2E_VERCEL_URL }}
+          VERCEL_TOKEN: ${{ secrets.E2E_VERCEL_TOKEN }}
+          OPENROUTER_URL: ${{ secrets.E2E_OPENROUTER_URL }}
+          OPENROUTER_TOKEN: ${{ secrets.E2E_OPENROUTER_TOKEN }}
+          CLOUDFLARE_URL: ${{ secrets.E2E_CLOUDFLARE_URL }}
+          CLOUDFLARE_TOKEN: ${{ secrets.E2E_CLOUDFLARE_TOKEN }}
+          AWS_BEARER_TOKEN_BEDROCK: ${{ secrets.E2E_AWS_BEARER_TOKEN_BEDROCK }}
+          AWS_REGION: ${{ secrets.E2E_AWS_REGION }}
+          # Vertex (Anthropic-on-Vertex): SA + project required; region defaults
+          # to "global", model to a pinned claude snapshot.
+          GOOGLE_VERTEX_SA_BASE64: ${{ secrets.E2E_GOOGLE_VERTEX_SA_BASE64 }}
+          GOOGLE_VERTEX_PROJECT: ${{ secrets.E2E_GOOGLE_VERTEX_PROJECT }}
+          GOOGLE_VERTEX_REGION: ${{ secrets.E2E_GOOGLE_VERTEX_REGION }}
+          GOOGLE_VERTEX_MODEL: ${{ secrets.E2E_GOOGLE_VERTEX_MODEL }}
+        run: go test -tags e2e -timeout 40m -v ./e2e/...

.github/workflows/check-license-dependencies.yml

@@ -2,16 +2,16 @@ name: Check License Dependencies
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
     paths:
-      - 'go.mod'
-      - 'go.sum'
-      - '.github/workflows/check-license-dependencies.yml'
+      - "go.mod"
+      - "go.sum"
+      - ".github/workflows/check-license-dependencies.yml"
   pull_request:
     paths:
-      - 'go.mod'
-      - 'go.sum'
-      - '.github/workflows/check-license-dependencies.yml'
+      - "go.mod"
+      - "go.sum"
+      - ".github/workflows/check-license-dependencies.yml"
 
 jobs:
   check-internal-dependencies:
@@ -19,7 +19,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Check for problematic license dependencies
         run: |
@@ -56,55 +59,57 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
-    - name: Set up Go
-      uses: actions/setup-go@v5
-      with:
-        go-version-file: 'go.mod'
-        cache: true
+      - name: Set up Go
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
+        with:
+          go-version-file: "go.mod"
+          cache: true
 
-    - name: Install go-licenses
-      run: go install github.com/google/go-licenses@v1.6.0
+      - name: Install go-licenses
+        run: go install github.com/google/go-licenses@v1.6.0
 
-    - name: Check for GPL/AGPL licensed dependencies
-      run: |
-        echo "Checking for GPL/AGPL/LGPL licensed dependencies..."
-        echo ""
-
-        # Check all Go packages for copyleft licenses, excluding internal netbird packages
-        COPYLEFT_DEPS=$(go-licenses report ./... 2>/dev/null | grep -E 'GPL|AGPL|LGPL' | grep -v 'github.com/netbirdio/netbird/' || true)
-
-        if [ -n "$COPYLEFT_DEPS" ]; then
-          echo "Found copyleft licensed dependencies:"
-          echo "$COPYLEFT_DEPS"
+      - name: Check for GPL/AGPL licensed dependencies
+        run: |
+          echo "Checking for GPL/AGPL/LGPL licensed dependencies..."
           echo ""
 
-          # Filter out dependencies that are only pulled in by internal AGPL packages
-          INCOMPATIBLE=""
-          while IFS=',' read -r package url license; do
-            if echo "$license" | grep -qE 'GPL-[0-9]|AGPL-[0-9]|LGPL-[0-9]'; then
-              # Find ALL packages that import this GPL package using go list
-              IMPORTERS=$(go list -json -deps ./... 2>/dev/null | jq -r "select(.Imports[]? == \"$package\") | .ImportPath")
+          # Check all Go packages for copyleft licenses, excluding internal netbird packages
+          COPYLEFT_DEPS=$(go-licenses report ./... 2>/dev/null | grep -E 'GPL|AGPL|LGPL' | grep -v 'github.com/netbirdio/netbird/' || true)
 
-              # Check if any importer is NOT in management/signal/relay
-              BSD_IMPORTER=$(echo "$IMPORTERS" | grep -v "github.com/netbirdio/netbird/\(management\|signal\|relay\|proxy\|combined\|tools/idp-migrate\)" | head -1)
-
-              if [ -n "$BSD_IMPORTER" ]; then
-                echo "❌ $package ($license) is imported by BSD-licensed code: $BSD_IMPORTER"
-                INCOMPATIBLE="${INCOMPATIBLE}${package},${url},${license}\n"
-              else
-                echo "✓ $package ($license) is only used by internal AGPL packages - OK"
-              fi
-            fi
-          done <<< "$COPYLEFT_DEPS"
-
-          if [ -n "$INCOMPATIBLE" ]; then
+          if [ -n "$COPYLEFT_DEPS" ]; then
+            echo "Found copyleft licensed dependencies:"
+            echo "$COPYLEFT_DEPS"
             echo ""
-            echo "❌ INCOMPATIBLE licenses found that are used by BSD-licensed code:"
-            echo -e "$INCOMPATIBLE"
-            exit 1
-          fi
-        fi
 
-        echo "✅ All external license dependencies are compatible with BSD-3-Clause"
+            # Filter out dependencies that are only pulled in by internal AGPL packages
+            INCOMPATIBLE=""
+            while IFS=',' read -r package url license; do
+              if echo "$license" | grep -qE 'GPL-[0-9]|AGPL-[0-9]|LGPL-[0-9]'; then
+                # Find ALL packages that import this GPL package using go list
+                IMPORTERS=$(go list -json -deps ./... 2>/dev/null | jq -r "select(.Imports[]? == \"$package\") | .ImportPath")
+
+                # Check if any importer is NOT in management/signal/relay
+                BSD_IMPORTER=$(echo "$IMPORTERS" | grep -v "github.com/netbirdio/netbird/\(management\|signal\|relay\|proxy\|combined\|tools/idp-migrate\)" | head -1)
+
+                if [ -n "$BSD_IMPORTER" ]; then
+                  echo "❌ $package ($license) is imported by BSD-licensed code: $BSD_IMPORTER"
+                  INCOMPATIBLE="${INCOMPATIBLE}${package},${url},${license}\n"
+                else
+                  echo "✓ $package ($license) is only used by internal AGPL packages - OK"
+                fi
+              fi
+            done <<< "$COPYLEFT_DEPS"
+
+            if [ -n "$INCOMPATIBLE" ]; then
+              echo ""
+              echo "❌ INCOMPATIBLE licenses found that are used by BSD-licensed code:"
+              echo -e "$INCOMPATIBLE"
+              exit 1
+            fi
+          fi
+
+          echo "✅ All external license dependencies are compatible with BSD-3-Clause"

.github/workflows/docs-ack.yml

@@ -83,7 +83,7 @@ jobs:
 
       - name: Verify docs PR exists (and is open or merged)
         if: steps.validate.outputs.mode == 'added'
-        uses: actions/github-script@v7
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         id: verify
         with:
           pr_number: ${{ steps.extract.outputs.pr_number }}

.github/workflows/forum.yml

@@ -8,11 +8,10 @@ jobs:
   post:
     runs-on: ubuntu-latest
     steps:
-      - uses: roots/discourse-topic-github-release-action@main
+      - uses: roots/discourse-topic-github-release-action@557d74ea05b6cc0c47f555c1d5d28a89d904005b # v1.1.0
         with:
           discourse-api-key: ${{ secrets.DISCOURSE_RELEASES_API_KEY }}
           discourse-base-url: https://forum.netbird.io
           discourse-author-username: NetBird
           discourse-category: 17
-          discourse-tags:
-            releases
+          discourse-tags: releases

.github/workflows/frontend-ui.yml

@@ -0,0 +1,98 @@
+name: UI Frontend
+
+on:
+  pull_request:
+    paths:
+      - "client/ui/frontend/**"
+      - "client/ui/i18n/**"
+      - "client/ui/**/*.go"
+      - ".github/workflows/frontend-ui.yml"
+  push:
+    branches:
+      - main
+    paths:
+      - "client/ui/frontend/**"
+      - "client/ui/i18n/**"
+      - "client/ui/**/*.go"
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+
+jobs:
+  lint-and-build:
+    name: Lint & Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    defaults:
+      run:
+        working-directory: client/ui/frontend
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3.0.0
+        with:
+          version: 11
+
+      # Bindings are generated by wails3 from the Go service definitions and
+      # are not checked in (see client/ui/frontend/bindings/). Without them,
+      # typecheck/build fail on missing module imports.
+      - name: Set up Go
+        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
+        with:
+          go-version-file: "go.mod"
+          cache: false
+
+      # wails3 CLI links against GTK4 / WebKitGTK 6.0 via its internal/operatingsystem
+      # package, so the dev libraries must be present before `go install`.
+      - name: Install Wails Linux system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            pkg-config \
+            libgtk-4-dev \
+            libwebkitgtk-6.0-dev
+
+      - name: Install wails3 CLI
+        # Version derived from go.mod so the binding generator always matches
+        # the wails runtime the daemon links against.
+        working-directory: ${{ github.workspace }}
+        run: |
+          WAILS_VERSION=$(go list -m -f '{{.Version}}' github.com/wailsapp/wails/v3)
+          go install github.com/wailsapp/wails/v3/cmd/wails3@$WAILS_VERSION
+
+      - name: Get pnpm store directory
+        id: pnpm-store
+        run: echo "path=$(pnpm store path --silent)" >> "$GITHUB_OUTPUT"
+
+      - name: Cache pnpm store
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.pnpm-store.outputs.path }}
+          key: ${{ runner.os }}-pnpm-${{ hashFiles('client/ui/frontend/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Generate Wails bindings
+        run: pnpm run bindings
+
+      - name: Lint, typecheck, format
+        run: pnpm check
+
+      - name: Build
+        run: pnpm build

.github/workflows/git-town.yml

@@ -3,7 +3,7 @@ name: Git Town
 on:
   pull_request:
     branches:
-      - '**'
+      - "**"
 
 jobs:
   git-town:
@@ -15,7 +15,9 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: git-town/action@v1.2.1
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+      - uses: git-town/action@3d8b878379abb1ee393fb49865a28b4a6c2cd3b0 # v1.2.1
         with:
           skip-single-stacks: true

.github/workflows/golang-test-darwin.yml

@@ -16,16 +16,18 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
 
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: ~/go/pkg/mod
           key: macos-gotest-${{ hashFiles('**/go.sum') }}
@@ -43,5 +45,19 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Test
-        run: NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -tags=devcert -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 5m -p 1 $(go list ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined)
+        # Exclude client/ui: its main.go uses //go:embed all:frontend/dist,
+        # which fails to compile until the frontend has been built. The Wails UI
+        # has no Go-side unit tests, and its release pipeline runs `pnpm build`
+        # before goreleaser.
+        # `go list -e` lets the listing succeed even though the embed fails to
+        # resolve; the grep then drops the broken package by path. Without -e,
+        # go list aborts with empty stdout and `go test` falls back to the repo
+        # root, which has no Go files.
+        run: NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -coverprofile=coverage.txt -tags 'devcert privileged' -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 5m -p 1 $(go list -e ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined -e /client/ui -e /client/testutil/privileged)
 
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,client

.github/workflows/golang-test-freebsd.yml

@@ -15,20 +15,31 @@ jobs:
     name: "Client / Unit"
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+
+      - name: Read Go version from go.mod
+        id: goversion
+        run: echo "version=$(awk '/^go / {print $2}' go.mod)" >> "$GITHUB_OUTPUT"
+
       - name: Test in FreeBSD
         id: test
-        uses: vmactions/freebsd-vm@v1
+        env:
+          GO_VERSION: ${{ steps.goversion.outputs.version }}
+        uses: vmactions/freebsd-vm@b84ab5559b5a1bb4b8ee2737d2506a16e1737636 # v1.4.8
         with:
           usesh: true
           copyback: false
-          release: "14.2"
+          release: "15.0"
+          envs: "GO_VERSION"
           prepare: |
             pkg install -y curl pkgconf xorg
-            GO_TARBALL="go1.25.3.freebsd-amd64.tar.gz"
+            GO_TARBALL="go${GO_VERSION}.freebsd-amd64.tar.gz"
             GO_URL="https://go.dev/dl/$GO_TARBALL"
             curl -vLO "$GO_URL"
-            tar -C /usr/local -vxzf "$GO_TARBALL"            
+            tar -C /usr/local -vxzf "$GO_TARBALL"
 
           # -x - to print all executed commands
           # -e - to faile on first error
@@ -37,14 +48,14 @@ jobs:
             export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin
             time go build -o netbird client/main.go
             # check all component except management, since we do not support management server on freebsd
-            time go test -timeout 1m -failfast ./base62/...
+            time go test -tags privileged -timeout 1m -failfast ./base62/...
             # NOTE: without -p1 `client/internal/dns` will fail because of `listen udp4 :33100: bind: address already in use`
-            time go test -timeout 8m -failfast -v -p 1 ./client/...
-            time go test -timeout 1m -failfast ./dns/...
-            time go test -timeout 1m -failfast ./encryption/...
-            time go test -timeout 1m -failfast ./formatter/...
-            time go test -timeout 1m -failfast ./client/iface/...
-            time go test -timeout 1m -failfast ./route/...
-            time go test -timeout 1m -failfast ./sharedsock/...
-            time go test -timeout 1m -failfast ./util/...
-            time go test -timeout 1m -failfast ./version/...
+            time go test -tags privileged -timeout 8m -failfast -v -p 1 ./client/...
+            time go test -tags privileged -timeout 1m -failfast ./dns/...
+            time go test -tags privileged -timeout 1m -failfast ./encryption/...
+            time go test -tags privileged -timeout 1m -failfast ./formatter/...
+            time go test -tags privileged -timeout 1m -failfast ./client/iface/...
+            time go test -tags privileged -timeout 1m -failfast ./route/...
+            time go test -tags privileged -timeout 1m -failfast ./sharedsock/...
+            time go test -tags privileged -timeout 1m -failfast ./util/...
+            time go test -tags privileged -timeout 1m -failfast ./version/...

.github/workflows/golang-test-linux.yml

@@ -18,9 +18,11 @@ jobs:
       management: ${{ steps.filter.outputs.management }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
-      - uses: dorny/paths-filter@v3
+      - uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
         id: filter
         with:
           filters: |
@@ -28,7 +30,7 @@ jobs:
               - 'management/**'
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -36,10 +38,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         id: cache
         with:
           path: |
@@ -51,7 +53,7 @@ jobs:
 
       - name: Install dependencies
         if: steps.cache.outputs.cache-hit != 'true'
-        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev gcc-multilib libpcap-dev
+        run: sudo apt update && sudo apt install -y -q libgtk-4-dev libwebkitgtk-6.0-dev libsoup-3.0-dev libgl1-mesa-dev xorg-dev gcc-multilib libpcap-dev
 
       - name: Install 32-bit libpcap
         if: steps.cache.outputs.cache-hit != 'true'
@@ -113,14 +115,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ '386','amd64' ]
+        arch: ["386", "amd64"]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -128,10 +132,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -141,7 +145,7 @@ jobs:
             ${{ runner.os }}-gotest-cache-
 
       - name: Install dependencies
-        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev gcc-multilib libpcap-dev
+        run: sudo apt update && sudo apt install -y -q libgtk-4-dev libwebkitgtk-6.0-dev libsoup-3.0-dev libgl1-mesa-dev xorg-dev gcc-multilib libpcap-dev
 
       - name: Install 32-bit libpcap
         if: matrix.arch == '386'
@@ -154,18 +158,36 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Test
-        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} CI=true go test -tags devcert -exec 'sudo' -timeout 10m -p 1 $(go list ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined)
+        # Exclude client/ui: its main.go uses //go:embed all:frontend/dist,
+        # which fails to compile until the frontend has been built. The Wails UI
+        # has no Go-side unit tests, and its release pipeline runs `pnpm build`
+        # before goreleaser.
+        # `go list -e` lets the listing succeed even though the embed fails to
+        # resolve; the grep then drops the broken package by path. Without -e,
+        # go list aborts with empty stdout and `go test` falls back to the repo
+        # root, which has no Go files.
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} CI=true go test -coverprofile=coverage.txt -tags 'devcert privileged' -exec 'sudo --preserve-env=CI,CGO_ENABLED' -timeout 10m -p 1 $(go list -e ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined -e /client/ui -e /client/testutil/privileged)
+
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,client
 
   test_client_on_docker:
     name: "Client (Docker) / Unit"
-    needs: [ build-cache ]
+    needs: [build-cache]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -177,7 +199,7 @@ jobs:
           echo "modcache_dir=$(go env GOMODCACHE)" >> $GITHUB_OUTPUT
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         id: cache-restore
         with:
           path: |
@@ -214,7 +236,7 @@ jobs:
             sh -c ' \
               apk update; apk add --no-cache \
                 ca-certificates iptables ip6tables dbus dbus-dev libpcap-dev build-base; \
-              go test -buildvcs=false -tags devcert -v -timeout 10m -p 1 $(go list -buildvcs=false ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined -e /client/ui -e /upload-server)
+              go test -buildvcs=false -tags "devcert privileged" -v -timeout 10m -p 1 $(go list -e -buildvcs=false ./... | grep -v -e /management -e /signal -e /relay -e /proxy -e /combined -e /client/ui -e /upload-server -e /client/testutil/privileged)
             '
 
   test_relay:
@@ -231,10 +253,12 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -246,10 +270,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -268,23 +292,33 @@ jobs:
         run: |
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           go test ${{ matrix.raceFlag }} \
-            -exec 'sudo' \
+            -exec 'sudo' -coverprofile=coverage.txt \
             -timeout 10m -p 1 ./relay/... ./shared/relay/...
 
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,relay
+
   test_proxy:
     name: "Proxy / Unit"
     needs: [build-cache]
     strategy:
       fail-fast: false
       matrix:
-        arch: [ '386','amd64' ]
+        arch: ["386", "amd64"]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -298,7 +332,7 @@ jobs:
           echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -316,7 +350,15 @@ jobs:
       - name: Test
         run: |
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
-          go test -timeout 10m -p 1 ./proxy/...
+          go test -timeout 10m -p 1 -coverprofile=coverage.txt ./proxy/...
+
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,proxy
 
   test_signal:
     name: "Signal / Unit"
@@ -324,14 +366,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ '386','amd64' ]
+        arch: ["386", "amd64"]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -343,10 +387,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -365,24 +409,34 @@ jobs:
         run: |
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           go test \
-            -exec 'sudo' \
+            -exec 'sudo' -coverprofile=coverage.txt \
             -timeout 10m ./signal/... ./shared/signal/...
 
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,signal
+
   test_management:
     name: "Management / Unit"
-    needs: [ build-cache ]
+    needs: [build-cache]
     strategy:
       fail-fast: false
       matrix:
-        arch: [ 'amd64' ]
-        store: [ 'sqlite', 'postgres', 'mysql' ]
+        arch: ["amd64"]
+        store: ["sqlite", "postgres", "mysql"]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -390,10 +444,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -410,7 +464,7 @@ jobs:
 
       - name: Login to Docker hub
         if: github.event.pull_request && github.event.pull_request.head.repo && github.event.pull_request.head.repo.full_name == '' || github.repository == github.event.pull_request.head.repo.full_name || !github.head_ref
-        uses: docker/login-action@v3
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_TOKEN }}
@@ -427,23 +481,31 @@ jobs:
         run: docker pull mlsmaycon/warmed-mysql:8
 
       - name: Test
-        run: |          
+        run: |
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           NETBIRD_STORE_ENGINE=${{ matrix.store }} \
             CI=true \
-          go test -tags=devcert \
+          go test -tags=devcert -coverprofile=coverage.txt \
             -exec "sudo --preserve-env=CI,NETBIRD_STORE_ENGINE" \
             -timeout 20m ./management/... ./shared/management/...
 
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: unit,management
+
   benchmark:
     name: "Management / Benchmark"
-    needs: [ build-cache ]
+    needs: [build-cache]
     if: ${{ needs.build-cache.outputs.management == 'true' || github.event_name != 'pull_request' }}
     strategy:
       fail-fast: false
       matrix:
-        arch: [ 'amd64' ]
-        store: [ 'sqlite', 'postgres' ]
+        arch: ["amd64"]
+        store: ["sqlite", "postgres"]
     runs-on: ubuntu-22.04
     steps:
       - name: Create Docker network
@@ -474,10 +536,12 @@ jobs:
             prom/prometheus
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -485,10 +549,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -505,7 +569,7 @@ jobs:
 
       - name: Login to Docker hub
         if: github.event.pull_request && github.event.pull_request.head.repo && github.event.pull_request.head.repo.full_name == '' || github.repository == github.event.pull_request.head.repo.full_name || !github.head_ref
-        uses: docker/login-action@v3
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_TOKEN }}
@@ -522,20 +586,21 @@ jobs:
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           NETBIRD_STORE_ENGINE=${{ matrix.store }} \
           CI=true \
-          GIT_BRANCH=${{ github.ref_name }} \
           go test -tags devcert -run=^$ -bench=. \
           -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE,GIT_BRANCH,GITHUB_RUN_ID' \
           -timeout 20m ./management/... ./shared/management/... $(go list ./management/... ./shared/management/... | grep -v -e /management/server/http)
+        env:
+          GIT_BRANCH: ${{ github.ref_name }}
 
   api_benchmark:
     name: "Management / Benchmark (API)"
-    needs: [ build-cache ]
+    needs: [build-cache]
     if: ${{ needs.build-cache.outputs.management == 'true' || github.event_name != 'pull_request' }}
     strategy:
       fail-fast: false
       matrix:
-        arch: [ 'amd64' ]
-        store: [ 'sqlite', 'postgres' ]
+        arch: ["amd64"]
+        store: ["sqlite", "postgres"]
     runs-on: ubuntu-22.04
     steps:
       - name: Create Docker network
@@ -566,10 +631,12 @@ jobs:
             prom/prometheus
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -577,10 +644,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -597,7 +664,7 @@ jobs:
 
       - name: Login to Docker hub
         if: github.event.pull_request && github.event.pull_request.head.repo && github.event.pull_request.head.repo.full_name == '' || github.repository == github.event.pull_request.head.repo.full_name || !github.head_ref
-        uses: docker/login-action@v3
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_TOKEN }}
@@ -614,29 +681,32 @@ jobs:
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           NETBIRD_STORE_ENGINE=${{ matrix.store }} \
           CI=true \
-          GIT_BRANCH=${{ github.ref_name }} \
           go test -tags=benchmark \
             -run=^$ \
             -bench=. \
             -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE,GIT_BRANCH,GITHUB_RUN_ID' \
             -timeout 20m ./management/server/http/...
+        env:
+          GIT_BRANCH: ${{ github.ref_name }}
 
   api_integration_test:
     name: "Management / Integration"
-    needs: [ build-cache ]
+    needs: [build-cache]
     if: ${{ needs.build-cache.outputs.management == 'true' || github.event_name != 'pull_request' }}
     strategy:
       fail-fast: false
       matrix:
-        arch: [ 'amd64' ]
-        store: [ 'sqlite', 'postgres']
+        arch: ["amd64"]
+        store: ["sqlite", "postgres"]
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
@@ -644,10 +714,10 @@ jobs:
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
-          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -667,6 +737,14 @@ jobs:
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
           NETBIRD_STORE_ENGINE=${{ matrix.store }} \
           CI=true \
-          go test -tags=integration \
+          go test -tags=integration -coverprofile=coverage.txt \
           -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' \
           -timeout 20m ./management/server/http/...
+
+      - name: Upload coverage reports to Codecov
+        if: matrix.arch == 'amd64'
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f #v7.0.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: netbirdio/netbird
+          flags: integration,management

.github/workflows/golang-test-windows.yml

@@ -18,10 +18,12 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         id: go
         with:
           go-version-file: "go.mod"
@@ -33,7 +35,7 @@ jobs:
           echo "modcache=$(go env GOMODCACHE)" >> $env:GITHUB_ENV
 
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ${{ env.cache }}
@@ -44,16 +46,15 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Download wintun
-        uses: carlosperate/download-file-action@v2
         id: download-wintun
+        uses: netbirdio/shared-actions/actions/win-download-and-verify@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
         with:
-          file-url: https://pkgs.netbird.io/wintun/wintun-0.14.1.zip
-          file-name: wintun.zip
-          location: ${{ env.downloadPath }}
-          sha256: '07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51'
+          url: https://pkgs.netbird.io/wintun/wintun-0.14.1.zip
+          destination: ${{ env.downloadPath }}\wintun.zip
+          sha256: 07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51
 
       - name: Decompressing wintun files
-        run: tar -zvxf "${{ steps.download-wintun.outputs.file-path }}" -C ${{ env.downloadPath }}
+        run: tar -xvf "${{ steps.download-wintun.outputs.file-path }}" -C ${{ env.downloadPath }}
 
       - run: mv ${{ env.downloadPath }}/wintun/bin/amd64/wintun.dll 'C:\Windows\System32\'
 
@@ -64,10 +65,17 @@ jobs:
       - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOCACHE=${{ env.modcache }}
       - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe mod tidy
       - name: Generate test script
+        # Exclude client/ui: its main.go uses //go:embed all:frontend/dist,
+        # which fails to compile until the frontend has been built. The Wails UI
+        # has no Go-side unit tests, and its release pipeline runs `pnpm build`
+        # before goreleaser.
+        # `go list -e` lets the listing succeed even though the embed fails to
+        # resolve; the Where-Object pipeline then drops the broken package by
+        # path. Without -e, go list aborts with empty stdout.
         run: |
-          $packages = go list ./... | Where-Object { $_ -notmatch '/management' } | Where-Object { $_ -notmatch '/relay' } | Where-Object { $_ -notmatch '/signal' } | Where-Object { $_ -notmatch '/proxy' } | Where-Object { $_ -notmatch '/combined' }
+          $packages = go list -e ./... | Where-Object { $_ -notmatch '/management' } | Where-Object { $_ -notmatch '/relay' } | Where-Object { $_ -notmatch '/signal' } | Where-Object { $_ -notmatch '/proxy' } | Where-Object { $_ -notmatch '/combined' } | Where-Object { $_ -notmatch '/client/ui' }
           $goExe = "C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe"
-          $cmd = "$goExe test -tags=devcert -timeout 10m -p 1 $($packages -join ' ') > test-out.txt 2>&1"
+          $cmd = "$goExe test -tags `"devcert privileged`" -timeout 10m -p 1 $($packages -join ' ') > test-out.txt 2>&1"
           Set-Content -Path "${{ github.workspace }}\run-tests.cmd" -Value $cmd
 
       - name: test

.github/workflows/golangci-lint.yml

@@ -15,12 +15,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
-      - name: codespell
-        uses: codespell-project/actions-codespell@v2
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
-          ignore_words_list: erro,clienta,hastable,iif,groupd,testin,groupe,cros,ans,deriver,te,userA,ede,additionals
-          skip: go.mod,go.sum,**/proxy/web/**
+          persist-credentials: false
+      - name: codespell
+        uses: codespell-project/actions-codespell@8f01853be192eb0f849a5c7d721450e7a467c579 # v2.2
+        with:
+          ignore_words_list: erro,clienta,hastable,iif,groupd,testin,groupe,cros,ans,deriver,te,userA,ede,additionals,flate,recordin,unparseable
+          # Non-English UI translations trip codespell on real foreign words
+          # (de: "Sie", "oder", "ist"). Only en/common.json is the source of
+          # truth that should be spell-checked. List each translated locale
+          # dir below and add new ones as languages are added under
+          # client/ui/i18n/locales/. Single-star globs are matched per path
+          # segment by codespell and behave the same across versions; the
+          # recursive "**" form did not take effect with the codespell shipped
+          # by this action.
+          skip: go.mod,go.sum,*/proxy/web/*,*pnpm-lock.yaml,*package-lock.json,*/locales/de/*,*/locales/es/*,*/locales/fr/*,*/locales/hu/*,*/locales/it/*,*/locales/pt/*,*/locales/ru/*,*/locales/zh-CN/*,*/i18n/TRANSLATING.md
   golangci:
     strategy:
       fail-fast: false
@@ -38,21 +48,32 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
       - name: Check for duplicate constants
         if: matrix.os == 'ubuntu-latest'
         run: |
           ! awk '/const \(/,/)/{print $0}' management/server/activity/codes.go | grep -o '= [0-9]*' | sort | uniq -d | grep .
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
       - name: Install dependencies
         if: matrix.os == 'ubuntu-latest'
-        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev libpcap-dev
+        run: sudo apt update && sudo apt install -y -q libgtk-4-dev libwebkitgtk-6.0-dev libsoup-3.0-dev libgl1-mesa-dev xorg-dev libpcap-dev
+      - name: Stub Wails frontend bundle
+        # client/ui/main.go has //go:embed all:frontend/dist. The
+        # directory is produced by `pnpm run build` and is gitignored, so
+        # lint-only runs (no frontend toolchain) need a placeholder file
+        # for the embed pattern to match.
+        shell: bash
+        run: |
+          mkdir -p client/ui/frontend/dist
+          touch client/ui/frontend/dist/.embed-placeholder
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
+        uses: golangci/golangci-lint-action@82606bf257cbaff209d206a39f5134f0cfbfd2ee #v9.2.1
         with:
           version: latest
           skip-cache: true

.github/workflows/install-script-test.yml

@@ -22,7 +22,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: run install script
         env:

.github/workflows/mobile-build-validation.yml

@@ -16,23 +16,25 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
       - name: Setup Android SDK
-        uses: android-actions/setup-android@v3
+        uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1
         with:
           cmdline-tools-version: 8512546
       - name: Setup Java
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@1bcf9fb12cf4aa7d266a90ae39939e61372fe520
         with:
           java-version: "11"
           distribution: "adopt"
       - name: NDK Cache
         id: ndk-cache
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: /usr/local/lib/android/sdk/ndk
           key: ndk-cache-23.1.7779620
@@ -52,9 +54,11 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
       - name: install gomobile

.github/workflows/pr-title-check.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Validate PR title prefix
-        uses: actions/github-script@v7
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const title = context.payload.pull_request.title;

.github/workflows/proto-version-check.yml

@@ -3,74 +3,109 @@ name: Proto Version Check
 on:
   pull_request:
     paths:
-      - "**/*.proto"
       - "**/*.pb.go"
-      - "**/generate.sh"
-      - "proto-tools.env"
-      - ".github/workflows/proto-version-check.yml"
 
 jobs:
-  regenerate-and-diff:
-    name: Regenerate proto and verify no drift
+  check-proto-versions:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Load pinned proto toolchain versions
-        run: |
-          # shellcheck source=/dev/null
-          . ./proto-tools.env
-          {
-            echo "PROTOC_VERSION=${PROTOC_VERSION}"
-            echo "PROTOC_GEN_GO_VERSION=${PROTOC_GEN_GO_VERSION}"
-            echo "PROTOC_GEN_GO_GRPC_VERSION=${PROTOC_GEN_GO_GRPC_VERSION}"
-          } >> "$GITHUB_ENV"
-
-      - name: Setup Go
-        uses: actions/setup-go@v5
+      - name: Check for proto tool version changes
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
-          go-version-file: go.mod
+          script: |
+            const files = await github.paginate(github.rest.pulls.listFiles, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.issue.number,
+              per_page: 100,
+            });
 
-      - name: Setup protoc
-        uses: arduino/setup-protoc@f4d5893b897028ff5739576ea0409746887fa536 # v3.0.0
-        with:
-          version: ${{ env.PROTOC_VERSION }}
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
+            // Cover renamed .pb.go files in addition to plain edits.
+            // Renamed entries land under the new path with previous_filename
+            // pointing at the base-side name, so we read the base content
+            // from the old path when present.
+            const changedPbFiles = files
+              .filter(f => (f.status === 'modified' || f.status === 'renamed')
+                && f.filename.endsWith('.pb.go'))
+              .map(f => ({
+                headPath: f.filename,
+                basePath: f.previous_filename || f.filename,
+              }));
+            if (changedPbFiles.length === 0) {
+              console.log('No modified or renamed .pb.go files to check');
+              return;
+            }
 
-      - name: Install protoc plugins
-        run: |
-          go install "google.golang.org/protobuf/cmd/protoc-gen-go@${PROTOC_GEN_GO_VERSION}"
-          go install "google.golang.org/grpc/cmd/protoc-gen-go-grpc@${PROTOC_GEN_GO_GRPC_VERSION}"
-          echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH"
+            // Matches the generator version headers protoc writes at the top
+            // of generated files:
+            //   //   protoc           v3.21.12
+            //   //   protoc-gen-go    v1.26.0
+            //   // - protoc-gen-go-grpc v1.6.1   (grpc files prefix with "- ")
+            // The optional "- " prefix and the optional -gen-go / -gen-go-grpc
+            // suffixes keep the *_grpc.pb.go headers in scope.
+            const versionPattern = /^\s*\/\/\s+(?:-\s+)?protoc(?:-gen-go(?:-grpc)?)?\s+v[\d.]+/;
+            const baseSha = context.payload.pull_request.base.sha;
+            const headSha = context.payload.pull_request.head.sha;
 
-      - name: Verify protoc version matches pin
-        run: |
-          actual=$(protoc --version | awk '{print $2}')
-          if [[ "$actual" != "$PROTOC_VERSION" ]]; then
-            echo "::error::protoc $actual does not match pinned $PROTOC_VERSION"
-            exit 1
-          fi
+            async function getVersionHeader(path, ref) {
+              try {
+                const res = await github.rest.repos.getContent({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  path,
+                  ref,
+                });
+                if (!res.data.content) {
+                  return { ok: false, reason: 'no inline content (file too large)' };
+                }
+                const content = Buffer.from(res.data.content, 'base64').toString('utf8');
+                const lines = content
+                  .split('\n')
+                  .slice(0, 20)
+                  .filter(line => versionPattern.test(line));
+                return { ok: true, lines };
+              } catch (e) {
+                return { ok: false, reason: e.message };
+              }
+            }
 
-      - name: Regenerate all proto bindings
-        run: |
-          set -euo pipefail
-          for script in \
-            client/proto/generate.sh \
-            shared/signal/proto/generate.sh \
-            shared/management/proto/generate.sh \
-            flow/proto/generate.sh \
-            encryption/testprotos/generate.sh; do
-            echo "::group::$script"
-            bash "$script"
-            echo "::endgroup::"
-          done
+            const violations = [];
+            for (const file of changedPbFiles) {
+              const [base, head] = await Promise.all([
+                getVersionHeader(file.basePath, baseSha),
+                getVersionHeader(file.headPath, headSha),
+              ]);
+              if (!base.ok || !head.ok) {
+                core.warning(
+                  `Skipping ${file.headPath}: base=${base.ok ? 'ok' : base.reason}, head=${head.ok ? 'ok' : head.reason}`
+                );
+                continue;
+              }
+              if (base.lines.join('\n') !== head.lines.join('\n')) {
+                violations.push({
+                  file: file.basePath === file.headPath
+                    ? file.headPath
+                    : `${file.basePath} → ${file.headPath}`,
+                  base: base.lines,
+                  head: head.lines,
+                });
+              }
+            }
 
-      - name: Fail if regeneration changed any tracked or untracked file
-        run: |
-          if [[ -n "$(git status --porcelain --untracked-files=all)" ]]; then
-            echo "::error::Generated proto files drift from .proto sources or pinned tool versions."
-            echo "Run the generate.sh scripts locally with the toolchain in proto-tools.env and commit the result."
-            git status --short
-            exit 1
-          fi
+            if (violations.length > 0) {
+              const details = violations.map(v =>
+                `${v.file}:\n` +
+                `  base:\n${v.base.map(l => '    ' + l).join('\n') || '    (none)'}\n` +
+                `  head:\n${v.head.map(l => '    ' + l).join('\n') || '    (none)'}`
+              ).join('\n\n');
+
+              core.setFailed(
+                `Proto version strings changed in generated files.\n` +
+                `This usually means the wrong protoc or protoc-gen-go version was used.\n` +
+                `Regenerate with the matching tool versions.\n\n` +
+                details
+              );
+              return;
+            }
+
+            console.log('No proto version string changes detected');

.github/workflows/release.yml

@@ -9,10 +9,13 @@ on:
   pull_request:
 
 env:
-  SIGN_PIPE_VER: "v0.1.4"
-  GORELEASER_VER: "v2.14.3"
+  SIGN_PIPE_VER: "v0.1.8"
+  GORELEASER_VER: "v2.16.0"
   PRODUCT_NAME: "NetBird"
   COPYRIGHT: "NetBird GmbH"
+  flags: ""
+  SKIP_PUBLISH: "true"
+  SKIP_DOCKER_PUSH: "false"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
@@ -24,13 +27,15 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Generate FreeBSD port diff
-        run: bash release_files/freebsd-port-diff.sh
+        run: bash -x release_files/freebsd-port-diff.sh
 
       - name: Generate FreeBSD port issue body
-        run: bash release_files/freebsd-port-issue-body.sh
+        run: bash -x release_files/freebsd-port-issue-body.sh
 
       - name: Check if diff was generated
         id: check_diff
@@ -51,19 +56,26 @@ jobs:
           echo "Generated files for version: $VERSION"
           cat netbird-*.diff
 
+      - name: Read Go version from go.mod
+        id: goversion
+        run: echo "version=$(awk '/^go / {print $2}' go.mod)" >> "$GITHUB_OUTPUT"
+
       - name: Test FreeBSD port
         if: steps.check_diff.outputs.diff_exists == 'true'
-        uses: vmactions/freebsd-vm@v1
+        env:
+          GO_VERSION: ${{ steps.goversion.outputs.version }}
+        uses: vmactions/freebsd-vm@b84ab5559b5a1bb4b8ee2737d2506a16e1737636 # v1.4.8
         with:
           usesh: true
           copyback: false
           release: "15.0"
+          envs: "GO_VERSION"
           prepare: |
             # Install required packages
-            pkg install -y git curl portlint go
+            pkg install -y git curl portlint
 
             # Install Go for building
-            GO_TARBALL="go1.25.5.freebsd-amd64.tar.gz"
+            GO_TARBALL="go${GO_VERSION}.freebsd-amd64.tar.gz"
             GO_URL="https://go.dev/dl/$GO_TARBALL"
             curl -LO "$GO_URL"
             tar -C /usr/local -xzf "$GO_TARBALL"
@@ -93,19 +105,19 @@ jobs:
 
             # Show patched Makefile
             version=$(cat security/netbird/Makefile | grep -E '^DISTVERSION=' | awk '{print $NF}')
-            
+
             cd /usr/ports/security/netbird
             export BATCH=yes
             make package
             pkg add ./work/pkg/netbird-*.pkg
-            
+
             netbird version | grep "$version"
 
             echo "FreeBSD port test completed successfully!"
 
       - name: Upload FreeBSD port files
         if: steps.check_diff.outputs.diff_exists == 'true'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: freebsd-port-files
           path: |
@@ -121,29 +133,45 @@ jobs:
       windows_packages_artifact_url: ${{ steps.upload_windows_packages.outputs.artifact-url }}
       macos_packages_artifact_url: ${{ steps.upload_macos_packages.outputs.artifact-url }}
       ghcr_images: ${{ steps.tag_and_push_images.outputs.images_markdown }}
-    env:
-      flags: ""
     steps:
-      - name: Parse semver string
-        id: semver_parser
-        uses: booxmedialtd/ws-action-parse-semver@v1
-        with:
-          input_string: ${{ (startsWith(github.ref, 'refs/tags/v') && github.ref) || 'refs/tags/v0.0.0' }}
-          version_extractor_regex: '\/v(.*)$'
-
-      - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
-        run: echo "flags=--snapshot" >> $GITHUB_ENV
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
+          persist-credentials: false
+
+      - name: Parse semver string
+        id: semver_parser
+        uses: netbirdio/shared-actions/actions/parse-semver@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
+
+      - name: Set snapshot flag
+        if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: | 
+          echo "flags=--snapshot" >> $GITHUB_ENV
+
+      - name: Set build vars
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          if [[ "x-${{ steps.semver_parser.outputs.prerelease }}" == "x-" && "x-${{ github.repository }}" == "x-netbirdio/netbird" ]]; then
+            echo "x-${{ github.repository }}" 
+            echo "x-${{ steps.semver_parser.outputs.prerelease }}"
+            echo "SKIP_PUBLISH=false" >> $GITHUB_ENV
+          else
+            echo "x-${{ github.repository }}" 
+            echo "x-${{ steps.semver_parser.outputs.prerelease }}"
+          fi
+          
+          if [[ "x-${{ github.repository }}" != "x-netbirdio/netbird" ]]; then
+            echo "SKIP_DOCKER_PUSH=true" >> $GITHUB_ENV
+          fi
+
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache/restore@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ~/go/pkg/mod
@@ -153,21 +181,23 @@ jobs:
             ${{ runner.os }}-go-releaser-
       - name: Install modules
         run: go mod tidy
+      - name: run openapi generator
+        run: bash shared/management/http/api/generate.sh
       - name: check git status
         run: git --no-pager diff --exit-code
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@06116385d9baf250c9f4dcb4858b16962ea869c3 #v4.1.0
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 #v4.1.0
       - name: Login to Docker hub
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_TOKEN }}
       - name: Log in to the GitHub container registry
         if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
-        uses: docker/login-action@v3
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -186,12 +216,12 @@ jobs:
       - name: Install goversioninfo
         run: go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@233067e
       - name: Generate windows syso amd64
-        run: goversioninfo  -icon client/ui/assets/netbird.ico -manifest client/manifest.xml -product-name ${{ env.PRODUCT_NAME }} -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/resources_windows_amd64.syso
+        run: goversioninfo  -icon client/ui/build/windows/icon.ico -manifest client/manifest.xml -product-name ${{ env.PRODUCT_NAME }} -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/resources_windows_amd64.syso
       - name: Generate windows syso arm64
-        run: goversioninfo -arm -64 -icon client/ui/assets/netbird.ico -manifest client/manifest.xml -product-name ${{ env.PRODUCT_NAME }} -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/resources_windows_arm64.syso
+        run: goversioninfo -arm -64 -icon client/ui/build/windows/icon.ico -manifest client/manifest.xml -product-name ${{ env.PRODUCT_NAME }} -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/resources_windows_arm64.syso
       - name: Run GoReleaser
         id: goreleaser
-        uses: goreleaser/goreleaser-action@v4
+        uses: goreleaser/goreleaser-action@5daf1e915a5f0af01ddbcd89a43b8061ff4f1a89 # v7.2.2
         with:
           version: ${{ env.GORELEASER_VER }}
           args: release --clean ${{ env.flags }}
@@ -202,6 +232,8 @@ jobs:
           UPLOAD_YUM_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
           GPG_RPM_KEY_FILE: ${{ env.GPG_RPM_KEY_FILE }}
           NFPM_NETBIRD_RPM_PASSPHRASE: ${{ secrets.GPG_RPM_PASSPHRASE }}
+          SKIP_PUBLISH: ${{ env.SKIP_PUBLISH }}
+          SKIP_DOCKER_PUSH: ${{ env.SKIP_DOCKER_PUSH }}
       - name: Verify RPM signatures
         run: |
           docker run --rm -v $(pwd)/dist:/dist fedora:41 bash -c '
@@ -261,8 +293,11 @@ jobs:
           ${{ steps.goreleaser.outputs.artifacts }}
           JSON
 
+          # dockers_v2 artifacts have no top-level goarch field, so match the
+          # per-platform -amd64 tag suffix instead; it works for both the old
+          # dockers and the new dockers_v2 image naming.
           mapfile -t src_images < <(
-            jq -r '.[] | select(.type == "Docker Image") | select(.goarch == "amd64") | .name | select(startswith("ghcr.io/"))' /tmp/goreleaser-artifacts.json
+            jq -r '.[] | select(.type == "Docker Image") | .name | select(startswith("ghcr.io/") and endswith("-amd64"))' /tmp/goreleaser-artifacts.json
           )
 
           for src in "${src_images[@]}"; do
@@ -282,28 +317,28 @@ jobs:
           } >> "$GITHUB_OUTPUT"
       - name: upload non tags for debug purposes
         id: upload_release
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: release
           path: dist/
           retention-days: 7
       - name: upload linux packages
         id: upload_linux_packages
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: linux-packages
           path: dist/netbird_linux**
           retention-days: 7
       - name: upload windows packages
         id: upload_windows_packages
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: windows-packages
           path: dist/netbird_windows**
           retention-days: 7
       - name: upload macos packages
         id: upload_macos_packages
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: macos-packages
           path: dist/netbird_darwin**
@@ -314,27 +349,40 @@ jobs:
     outputs:
       release_ui_artifact_url: ${{ steps.upload_release_ui.outputs.artifact-url }}
     steps:
-      - name: Parse semver string
-        id: semver_parser
-        uses: booxmedialtd/ws-action-parse-semver@v1
-        with:
-          input_string: ${{ (startsWith(github.ref, 'refs/tags/v') && github.ref) || 'refs/tags/v0.0.0' }}
-          version_extractor_regex: '\/v(.*)$'
-
-      - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
-        run: echo "flags=--snapshot" >> $GITHUB_ENV
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
+          persist-credentials: false
+
+      - name: Parse semver string
+        id: semver_parser
+        uses: netbirdio/shared-actions/actions/parse-semver@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
+
+      - name: Set snapshot flag
+        if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          echo "flags=--snapshot" >> $GITHUB_ENV
+
+      - name: Set build vars
+        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          if [[ "x-${{ steps.semver_parser.outputs.prerelease }}" == "x-" && "x-${{ github.repository }}" == "x-netbirdio/netbird" ]]; then
+            echo "x-${{ github.repository }}" 
+            echo "x-${{ steps.semver_parser.outputs.prerelease }}"
+            echo "SKIP_PUBLISH=false" >> $GITHUB_ENV
+          else
+            echo "x-${{ github.repository }}" 
+            echo "x-${{ steps.semver_parser.outputs.prerelease }}"
+          fi
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ~/go/pkg/mod
@@ -349,8 +397,18 @@ jobs:
       - name: check git status
         run: git --no-pager diff --exit-code
 
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3.0.0
+        with:
+          version: 11
+
       - name: Install dependencies
-        run: sudo apt update && sudo apt install -y -q libappindicator3-dev gir1.2-appindicator3-0.1 libxxf86vm-dev gcc-mingw-w64-x86-64
+        run: sudo apt update && sudo apt install -y -q libgtk-4-dev libwebkitgtk-6.0-dev libsoup-3.0-dev gcc-mingw-w64-x86-64
 
       - name: Decode GPG signing key
         if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
@@ -369,13 +427,19 @@ jobs:
           echo "/tmp/llvm-mingw-20250709-ucrt-ubuntu-22.04-x86_64/bin" >> $GITHUB_PATH
       - name: Install goversioninfo
         run: go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@233067e
+      - name: Install wails3 CLI
+        # Version derived from go.mod so the binding generator always matches
+        # the wails runtime the binary links against.
+        run: |
+          WAILS_VERSION=$(go list -m -f '{{.Version}}' github.com/wailsapp/wails/v3)
+          go install github.com/wailsapp/wails/v3/cmd/wails3@$WAILS_VERSION
       - name: Generate windows syso amd64
-        run: goversioninfo -64 -icon client/ui/assets/netbird.ico -manifest client/ui/manifest.xml -product-name ${{ env.PRODUCT_NAME }}-"UI" -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/ui/resources_windows_amd64.syso
+        run: goversioninfo -64 -icon client/ui/build/windows/icon.ico -manifest client/ui/build/windows/wails.exe.manifest -product-name ${{ env.PRODUCT_NAME }}-"UI" -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/ui/resources_windows_amd64.syso
       - name: Generate windows syso arm64
-        run: goversioninfo -arm -64 -icon client/ui/assets/netbird.ico -manifest client/ui/manifest.xml -product-name ${{ env.PRODUCT_NAME }}-"UI" -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/ui/resources_windows_arm64.syso
+        run: goversioninfo -arm -64 -icon client/ui/build/windows/icon.ico -manifest client/ui/build/windows/wails.exe.manifest -product-name ${{ env.PRODUCT_NAME }}-"UI" -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/ui/resources_windows_arm64.syso
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v4
+        uses: goreleaser/goreleaser-action@5daf1e915a5f0af01ddbcd89a43b8061ff4f1a89 # v7.2.2
         with:
           version: ${{ env.GORELEASER_VER }}
           args: release --config .goreleaser_ui.yaml --clean ${{ env.flags }}
@@ -386,6 +450,7 @@ jobs:
           UPLOAD_YUM_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
           GPG_RPM_KEY_FILE: ${{ env.GPG_RPM_KEY_FILE }}
           NFPM_NETBIRD_UI_RPM_PASSPHRASE: ${{ secrets.GPG_RPM_PASSPHRASE }}
+          SKIP_PUBLISH: ${{ env.SKIP_PUBLISH }}
       - name: Verify RPM signatures
         run: |
           docker run --rm -v $(pwd)/dist:/dist fedora:41 bash -c '
@@ -404,7 +469,7 @@ jobs:
         run: rm -f /tmp/gpg-rpm-signing-key.asc
       - name: upload non tags for debug purposes
         id: upload_release_ui
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: release-ui
           path: dist/
@@ -418,16 +483,17 @@ jobs:
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         run: echo "flags=--snapshot" >> $GITHUB_ENV
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
+          persist-credentials: false
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
           cache: false
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: |
             ~/go/pkg/mod
@@ -439,9 +505,23 @@ jobs:
         run: go mod tidy
       - name: check git status
         run: git --no-pager diff --exit-code
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+      - name: Set up pnpm
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3.0.0
+        with:
+          version: 11
+      - name: Install wails3 CLI
+        # Version derived from go.mod so the binding generator always matches
+        # the wails runtime the binary links against.
+        run: |
+          WAILS_VERSION=$(go list -m -f '{{.Version}}' github.com/wailsapp/wails/v3)
+          go install github.com/wailsapp/wails/v3/cmd/wails3@$WAILS_VERSION
       - name: Run GoReleaser
         id: goreleaser
-        uses: goreleaser/goreleaser-action@v4
+        uses: goreleaser/goreleaser-action@5daf1e915a5f0af01ddbcd89a43b8061ff4f1a89 # v7.2.2
         with:
           version: ${{ env.GORELEASER_VER }}
           args: release --config .goreleaser_ui_darwin.yaml --clean ${{ env.flags }}
@@ -449,7 +529,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: upload non tags for debug purposes
         id: upload_release_ui_darwin
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: release-ui-darwin
           path: dist/
@@ -474,27 +554,26 @@ jobs:
       PackageWorkdir: netbird_windows_${{ matrix.arch }}
       downloadPath: '${{ github.workspace }}\temp'
     steps:
+      - name: Checkout
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+
       - name: Parse semver string
         id: semver_parser
-        uses: booxmedialtd/ws-action-parse-semver@v1
-        with:
-          input_string: ${{ (startsWith(github.ref, 'refs/tags/v') && github.ref) || 'refs/tags/v0.0.0' }}
-          version_extractor_regex: '\/v(.*)$'
-
-      - name: Checkout
-        uses: actions/checkout@v4
+        uses: netbirdio/shared-actions/actions/parse-semver@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
 
       - name: Add 7-Zip to PATH
         run: echo "C:\Program Files\7-Zip" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
       - name: Download release artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: release
           path: release
 
       - name: Download UI release artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: release-ui
           path: release-ui
@@ -514,68 +593,74 @@ jobs:
           Get-ChildItem $workdir
 
       - name: Download wintun
-        uses: carlosperate/download-file-action@v2
         id: download-wintun
+        uses: netbirdio/shared-actions/actions/win-download-and-verify@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
         with:
-          file-url: https://pkgs.netbird.io/wintun/wintun-0.14.1.zip
-          file-name: wintun.zip
-          location: ${{ env.downloadPath }}
-          sha256: '07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51'
+          url: https://pkgs.netbird.io/wintun/wintun-0.14.1.zip
+          destination: ${{ env.downloadPath }}\wintun.zip
+          sha256: 07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51
 
       - name: Decompress wintun files
-        run: tar -zvxf "${{ steps.download-wintun.outputs.file-path }}" -C ${{ env.downloadPath }}
+        run: tar -xvf "${{ env.downloadPath }}\wintun.zip" -C ${{ env.downloadPath }}
 
       - name: Move wintun.dll into dist
         run: mv ${{ env.downloadPath }}\wintun\bin\${{ matrix.wintun_arch }}\wintun.dll ${{ github.workspace }}\dist\${{ env.PackageWorkdir }}\
 
-      - name: Download Mesa3D (amd64 only)
-        uses: carlosperate/download-file-action@v2
-        id: download-mesa3d
-        if: matrix.arch == 'amd64'
-        with:
-          file-url: https://downloads.fdossena.com/Projects/Mesa3D/Builds/MesaForWindows-x64-20.1.8.7z
-          file-name: mesa3d.7z
-          location: ${{ env.downloadPath }}
-          sha256: '71c7cb64ec229a1d6b8d62fa08e1889ed2bd17c0eeede8689daf0f25cb31d6b9'
-
-      - name: Extract Mesa3D driver (amd64 only)
-        if: matrix.arch == 'amd64'
-        run: 7z x -o"${{ env.downloadPath }}" "${{ env.downloadPath }}/mesa3d.7z"
-
-      - name: Move opengl32.dll into dist (amd64 only)
-        if: matrix.arch == 'amd64'
-        run: mv ${{ env.downloadPath }}\opengl32.dll ${{ github.workspace }}\dist\${{ env.PackageWorkdir }}\
-
       - name: Download EnVar plugin for NSIS
-        uses: carlosperate/download-file-action@v2
+        uses: netbirdio/shared-actions/actions/win-download-and-verify@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
         with:
-          file-url: https://nsis.sourceforge.io/mediawiki/images/7/7f/EnVar_plugin.zip
-          file-name: envar_plugin.zip
-          location: ${{ github.workspace }}
+          url: https://pkgs.netbird.io/nsis/EnVar_plugin.zip
+          destination: ${{ github.workspace }}\envar_plugin.zip
+          sha256: e9aa92de351345ed82795251d838f1ae9041ba35af9d381a5780c7843b01f56a
 
       - name: Extract EnVar plugin
         run: 7z x -o"${{ github.workspace }}/NSIS_Plugins" "${{ github.workspace }}/envar_plugin.zip"
 
       - name: Download ShellExecAsUser plugin for NSIS (amd64 only)
-        uses: carlosperate/download-file-action@v2
         if: matrix.arch == 'amd64'
+        uses: netbirdio/shared-actions/actions/win-download-and-verify@be5df6047383da2236e02243cceb857d8567c27e # v0.0.2
         with:
-          file-url: https://nsis.sourceforge.io/mediawiki/images/6/68/ShellExecAsUser_amd64-Unicode.7z
-          file-name: ShellExecAsUser_amd64-Unicode.7z
-          location: ${{ github.workspace }}
+          url: https://pkgs.netbird.io/nsis/ShellExecAsUser_amd64-Unicode.7z
+          destination: ${{ github.workspace }}\ShellExecAsUser_amd64-Unicode.7z
+          sha256: 0a55ea25c7330a92cec028eda8afcaf1b1a7092e0dfb77c21c8f654564b4ff9d
 
       - name: Extract ShellExecAsUser plugin (amd64 only)
         if: matrix.arch == 'amd64'
         run: 7z x -o"${{ github.workspace }}/NSIS_Plugins" "${{ github.workspace }}/ShellExecAsUser_amd64-Unicode.7z"
 
-      - name: Build NSIS installer
-        uses: joncloud/makensis-action@v3.3
+      - name: Set up Go for wails3 CLI
+        uses: actions/setup-go@v5
         with:
-          additional-plugin-paths: ${{ github.workspace }}/NSIS_Plugins/Plugins
-          script-file: client/installer.nsis
-          arguments: "/V4 /DARCH=${{ matrix.arch }}"
+          go-version-file: "go.mod"
+          cache: false
+
+      - name: Install wails3 CLI
+        # Version derived from go.mod so the bootstrapper payload always
+        # matches the wails runtime the binary links against.
+        shell: bash
+        run: |
+          WAILS_VERSION=$(go list -m -f '{{.Version}}' github.com/wailsapp/wails/v3)
+          go install github.com/wailsapp/wails/v3/cmd/wails3@$WAILS_VERSION
+
+      - name: Stage WebView2 bootstrapper for installers
+        # Both client/installer.nsis and client/netbird.wxs reference
+        # client/MicrosoftEdgeWebview2Setup.exe. wails3 writes it there.
+        # The signing pipeline (netbirdio/sign-pipelines) does the same
+        # step for release builds; this mirrors it for PR sanity testing.
+        shell: bash
+        run: wails3 generate webview2bootstrapper -dir client
+
+      - name: Build NSIS installer
+        shell: pwsh
         env:
           APPVER: ${{ steps.semver_parser.outputs.major }}.${{ steps.semver_parser.outputs.minor }}.${{ steps.semver_parser.outputs.patch }}.${{ github.run_id }}
+        run: |
+          $nsisPluginDir = "C:\Program Files (x86)\NSIS\Plugins\x86-unicode"
+          $srcPlugins    = "${{ github.workspace }}\NSIS_Plugins\Plugins"
+          Get-ChildItem -Path $srcPlugins -Recurse -Filter *.dll |
+            Copy-Item -Destination $nsisPluginDir -Force
+          & "C:\Program Files (x86)\NSIS\makensis.exe" /V4 "/DARCH=${{ matrix.arch }}" client\installer.nsis
+          if ($LASTEXITCODE -ne 0) { throw "makensis failed with exit code $LASTEXITCODE" }
 
       - name: Rename NSIS installer
         run: mv netbird-installer.exe netbird_installer_test_windows_${{ matrix.arch }}.exe
@@ -592,7 +677,7 @@ jobs:
 
       - name: Upload installer artifacts
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
         with:
           name: windows-installer-test-${{ matrix.arch }}
           path: |
@@ -611,7 +696,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Create or update PR comment
-        uses: actions/github-script@v7
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         env:
           RELEASE_RESULT: ${{ needs.release.result }}
           RELEASE_UI_RESULT: ${{ needs.release_ui.result }}
@@ -703,7 +788,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Trigger binaries sign pipelines
-        uses: benc-uk/workflow-dispatch@v1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: Sign bin and installer
           repo: netbirdio/sign-pipelines

.github/workflows/sync-main.yml

@@ -14,9 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Trigger main branch sync
-        uses: benc-uk/workflow-dispatch@v1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: sync-main.yml
           repo: ${{ secrets.UPSTREAM_REPO }}
           token: ${{ secrets.NC_GITHUB_TOKEN }}
-          inputs: '{ "sha": "${{ github.sha }}" }'
+          inputs: '{ "sha": "${{ github.sha }}" }'

.github/workflows/sync-tag.yml

@@ -3,7 +3,7 @@ name: sync tag
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Trigger release tag sync
-        uses: benc-uk/workflow-dispatch@v1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: sync-tag.yml
           ref: main
@@ -29,7 +29,7 @@ jobs:
     if: github.event.created && !github.event.deleted && startsWith(github.ref, 'refs/tags/v') && !contains(github.ref_name, '-')
     steps:
       - name: Trigger android-client submodule bump
-        uses: benc-uk/workflow-dispatch@7a027648b88c2413826b6ddd6c76114894dc5ec4 # v1.3.1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: bump-netbird.yml
           ref: main
@@ -42,10 +42,10 @@ jobs:
     if: github.event.created && !github.event.deleted && startsWith(github.ref, 'refs/tags/v') && !contains(github.ref_name, '-')
     steps:
       - name: Trigger ios-client submodule bump
-        uses: benc-uk/workflow-dispatch@7a027648b88c2413826b6ddd6c76114894dc5ec4 # v1.3.1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: bump-netbird.yml
           ref: main
           repo: netbirdio/ios-client
           token: ${{ secrets.NC_GITHUB_TOKEN }}
-          inputs: '{ "tag": "${{ github.ref_name }}" }'
+          inputs: '{ "tag": "${{ github.ref_name }}" }'

.github/workflows/test-infrastructure-files.yml

@@ -6,10 +6,10 @@ on:
       - main
   pull_request:
     paths:
-      - 'infrastructure_files/**'
-      - '.github/workflows/test-infrastructure-files.yml'
-      - 'management/cmd/**'
-      - 'signal/cmd/**'
+      - "infrastructure_files/**"
+      - ".github/workflows/test-infrastructure-files.yml"
+      - "management/cmd/**"
+      - "signal/cmd/**"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        store: [ 'sqlite', 'postgres', 'mysql' ]
+        store: ["sqlite", "postgres", "mysql"]
     services:
       postgres:
         image: ${{ (matrix.store == 'postgres') && 'postgres' || '' }}
@@ -68,15 +68,17 @@ jobs:
         run: sudo apt-get install -y curl
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
 
       - name: Cache Go modules
-        uses: actions/cache@v4
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -139,8 +141,8 @@ jobs:
           CI_NETBIRD_IDP_MGMT_CLIENT_SECRET: testing.client.secret
           CI_NETBIRD_SIGNAL_PORT: 12345
           CI_NETBIRD_STORE_CONFIG_ENGINE: ${{ matrix.store }}
-          NETBIRD_STORE_ENGINE_POSTGRES_DSN: '${{ env.NETBIRD_STORE_ENGINE_POSTGRES_DSN }}$'
-          NETBIRD_STORE_ENGINE_MYSQL_DSN: '${{ env.NETBIRD_STORE_ENGINE_MYSQL_DSN }}$'
+          NETBIRD_STORE_ENGINE_POSTGRES_DSN: "${{ env.NETBIRD_STORE_ENGINE_POSTGRES_DSN }}$"
+          NETBIRD_STORE_ENGINE_MYSQL_DSN: "${{ env.NETBIRD_STORE_ENGINE_MYSQL_DSN }}$"
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
           CI_NETBIRD_TURN_EXTERNAL_IP: "1.2.3.4"
           CI_NETBIRD_MGMT_DISABLE_DEFAULT_POLICY: false
@@ -205,7 +207,7 @@ jobs:
       - name: Build management docker image
         working-directory: management
         run: |
-          docker build -t netbirdio/management:latest .
+          docker build -t netbirdio/management:latest --build-arg TARGETPLATFORM=. .
 
       - name: Build signal binary
         working-directory: signal
@@ -214,7 +216,7 @@ jobs:
       - name: Build signal docker image
         working-directory: signal
         run: |
-          docker build -t netbirdio/signal:latest .
+          docker build -t netbirdio/signal:latest --build-arg TARGETPLATFORM=. .
 
       - name: Build relay binary
         working-directory: relay
@@ -223,7 +225,7 @@ jobs:
       - name: Build relay docker image
         working-directory: relay
         run: |
-          docker build -t netbirdio/relay:latest .
+          docker build -t netbirdio/relay:latest --build-arg TARGETPLATFORM=. .
 
       - name: run docker compose up
         working-directory: infrastructure_files/artifacts
@@ -254,7 +256,9 @@ jobs:
         run: sudo apt-get install -y jq
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
 
       - name: run script with Zitadel PostgreSQL
         run: NETBIRD_DOMAIN=use-ip bash -x infrastructure_files/getting-started-with-zitadel.sh

.github/workflows/update-docs.yml

@@ -3,9 +3,9 @@ name: update docs
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
     paths:
-      - 'shared/management/http/api/openapi.yml'
+      - "shared/management/http/api/openapi.yml"
 
 jobs:
   trigger_docs_api_update:
@@ -13,10 +13,10 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Trigger API pages generation
-        uses: benc-uk/workflow-dispatch@v1
+        uses: benc-uk/workflow-dispatch@31e2b3319479a63f0ab15bf800eff9e913504e26 # v1.3.2
         with:
           workflow: generate api pages
           repo: netbirdio/docs
           ref: "refs/heads/main"
           token: ${{ secrets.SIGN_GITHUB_TOKEN }}
-          inputs: '{ "tag": "${{ github.ref }}" }'
+          inputs: '{ "tag": "${{ github.ref }}" }'

.github/workflows/wasm-build-validation.yml

@@ -19,15 +19,17 @@ jobs:
       GOARCH: wasm
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
       - name: Install dependencies
-        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev libpcap-dev
+        run: sudo apt update && sudo apt install -y -q libgtk-4-dev libwebkitgtk-6.0-dev libsoup-3.0-dev libgl1-mesa-dev xorg-dev libpcap-dev
       - name: Install golangci-lint
-        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
+        uses: golangci/golangci-lint-action@82606bf257cbaff209d206a39f5134f0cfbfd2ee #v9.2.1
         with:
           version: latest
           install-mode: binary
@@ -42,9 +44,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
         with:
           go-version-file: "go.mod"
       - name: Build Wasm client
@@ -61,8 +65,7 @@ jobs:
 
           echo "Size: ${SIZE} bytes (${SIZE_MB} MB)"
 
-          if [ ${SIZE} -gt 58720256 ]; then
-            echo "Wasm binary size (${SIZE_MB}MB) exceeds 56MB limit!"
+          if [ ${SIZE} -gt 62914560 ]; then
+            echo "Wasm binary size (${SIZE_MB}MB) exceeds 60MB limit!"
             exit 1
           fi
-

.gitignore

@@ -1,3 +1,4 @@
+.claude
 .idea
 .run
 *.iml

.golangci.yaml

@@ -114,6 +114,16 @@ linters:
       - linters:
           - staticcheck
         text: "QF1012"
+      # client/ui/main.go uses //go:embed all:frontend/dist; the
+      # directory is populated by `pnpm build` in the release pipeline
+      # and missing at lint time, so the embed parses to "no matching
+      # files found" — surfaced by golangci-lint's typecheck pre-pass.
+      # Suppress just that one diagnostic; the rest of the package
+      # (services/, tray.go, grpc.go, ...) still gets linted normally.
+      - linters:
+          - typecheck
+        path: client/ui/main\.go
+        text: "pattern all:frontend/dist"
     paths:
       - third_party$
       - builtin$

.goreleaser.yaml

@@ -1,5 +1,7 @@
 version: 2
-
+env:
+  - SKIP_PUBLISH={{ if index .Env "SKIP_PUBLISH" }}{{ .Env.SKIP_PUBLISH }}{{ else }}true{{ end }}
+  - SKIP_DOCKER_PUSH={{ if index .Env "SKIP_DOCKER_PUSH" }}{{ .Env.SKIP_DOCKER_PUSH }}{{ else }}false{{ end }}
 project_name: netbird
 builds:
   - id: netbird-wasm
@@ -74,6 +76,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -88,6 +92,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -102,6 +108,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -122,6 +130,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -136,6 +146,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -150,6 +162,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X main.Version={{.Version}} -X main.Commit={{.Commit}} -X main.BuildDate={{.CommitDate}}
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -170,6 +184,8 @@ builds:
       - amd64
       - arm64
       - arm
+    goarm:
+      - 7
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
@@ -196,6 +212,7 @@ nfpms:
     description: Netbird client.
     homepage: https://netbird.io/
     license: BSD-3-Clause
+    vendor: NetBird
     id: netbird_deb
     bindir: /usr/bin
     builds:
@@ -210,6 +227,7 @@ nfpms:
     description: Netbird client.
     homepage: https://netbird.io/
     license: BSD-3-Clause
+    vendor: NetBird
     id: netbird_rpm
     bindir: /usr/bin
     builds:
@@ -222,670 +240,192 @@ nfpms:
     rpm:
       signature:
         key_file: '{{ if index .Env "GPG_RPM_KEY_FILE" }}{{ .Env.GPG_RPM_KEY_FILE }}{{ end }}'
-dockers:
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
-    ids:
-      - netbird
-    goarch: amd64
-    use: buildx
-    dockerfile: client/Dockerfile
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
-    ids:
-      - netbird
-    goarch: arm64
-    use: buildx
-    dockerfile: client/Dockerfile
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
-    ids:
-      - netbird
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: client/Dockerfile
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-rootless-amd64
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
-    ids:
-      - netbird
-    goarch: amd64
-    use: buildx
-    dockerfile: client/Dockerfile-rootless
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-    ids:
-      - netbird
-    goarch: arm64
-    use: buildx
-    dockerfile: client/Dockerfile-rootless
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird:{{ .Version }}-rootless-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
-    ids:
-      - netbird
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: client/Dockerfile-rootless
-    extra_files:
-      - client/netbird-entrypoint.sh
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-
-  - image_templates:
-      - netbirdio/relay:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
-    ids:
-      - netbird-relay
-    goarch: amd64
-    use: buildx
-    dockerfile: relay/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/relay:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
-    ids:
-      - netbird-relay
-    goarch: arm64
-    use: buildx
-    dockerfile: relay/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/relay:{{ .Version }}-arm
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
-    ids:
-      - netbird-relay
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: relay/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/signal:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
-    ids:
-      - netbird-signal
-    goarch: amd64
-    use: buildx
-    dockerfile: signal/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/signal:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
-    ids:
-      - netbird-signal
-    goarch: arm64
-    use: buildx
-    dockerfile: signal/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/signal:{{ .Version }}-arm
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
-    ids:
-      - netbird-signal
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: signal/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
-    ids:
-      - netbird-mgmt
-    goarch: amd64
-    use: buildx
-    dockerfile: management/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
-    ids:
-      - netbird-mgmt
-    goarch: arm64
-    use: buildx
-    dockerfile: management/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-arm
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm
-    ids:
-      - netbird-mgmt
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: management/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-debug-amd64
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-amd64
-    ids:
-      - netbird-mgmt
-    goarch: amd64
-    use: buildx
-    dockerfile: management/Dockerfile.debug
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-debug-arm64v8
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm64v8
-    ids:
-      - netbird-mgmt
-    goarch: arm64
-    use: buildx
-    dockerfile: management/Dockerfile.debug
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-
-  - image_templates:
-      - netbirdio/management:{{ .Version }}-debug-arm
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm
-    ids:
-      - netbird-mgmt
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: management/Dockerfile.debug
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/upload:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
-    ids:
-      - netbird-upload
-    goarch: amd64
-    use: buildx
-    dockerfile: upload-server/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/upload:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
-    ids:
-      - netbird-upload
-    goarch: arm64
-    use: buildx
-    dockerfile: upload-server/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/upload:{{ .Version }}-arm
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
-    ids:
-      - netbird-upload
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: upload-server/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird-server:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-amd64
-    ids:
-      - netbird-server
-    goarch: amd64
-    use: buildx
-    dockerfile: combined/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird-server:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm64v8
-    ids:
-      - netbird-server
-    goarch: arm64
-    use: buildx
-    dockerfile: combined/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/netbird-server:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm
-    ids:
-      - netbird-server
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: combined/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/reverse-proxy:{{ .Version }}-amd64
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-amd64
-    ids:
-      - netbird-proxy
-    goarch: amd64
-    use: buildx
-    dockerfile: proxy/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/amd64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-    ids:
-      - netbird-proxy
-    goarch: arm64
-    use: buildx
-    dockerfile: proxy/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm64"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-  - image_templates:
-      - netbirdio/reverse-proxy:{{ .Version }}-arm
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm
-    ids:
-      - netbird-proxy
-    goarch: arm
-    goarm: 6
-    use: buildx
-    dockerfile: proxy/Dockerfile
-    build_flag_templates:
-      - "--platform=linux/arm"
-      - "--label=org.opencontainers.image.created={{.Date}}"
-      - "--label=org.opencontainers.image.title={{.ProjectName}}"
-      - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
-      - "--label=maintainer=dev@netbird.io"
-docker_manifests:
-  - name_template: netbirdio/netbird:{{ .Version }}
-    image_templates:
-      - netbirdio/netbird:{{ .Version }}-arm64v8
-      - netbirdio/netbird:{{ .Version }}-arm
-      - netbirdio/netbird:{{ .Version }}-amd64
-
-  - name_template: netbirdio/netbird:latest
-    image_templates:
-      - netbirdio/netbird:{{ .Version }}-arm64v8
-      - netbirdio/netbird:{{ .Version }}-arm
-      - netbirdio/netbird:{{ .Version }}-amd64
-
-  - name_template: netbirdio/netbird:{{ .Version }}-rootless
-    image_templates:
-      - netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-      - netbirdio/netbird:{{ .Version }}-rootless-arm
-      - netbirdio/netbird:{{ .Version }}-rootless-amd64
-
-  - name_template: netbirdio/netbird:rootless-latest
-    image_templates:
-      - netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-      - netbirdio/netbird:{{ .Version }}-rootless-arm
-      - netbirdio/netbird:{{ .Version }}-rootless-amd64
-
-  - name_template: netbirdio/relay:{{ .Version }}
-    image_templates:
-      - netbirdio/relay:{{ .Version }}-arm64v8
-      - netbirdio/relay:{{ .Version }}-arm
-      - netbirdio/relay:{{ .Version }}-amd64
-
-  - name_template: netbirdio/relay:latest
-    image_templates:
-      - netbirdio/relay:{{ .Version }}-arm64v8
-      - netbirdio/relay:{{ .Version }}-arm
-      - netbirdio/relay:{{ .Version }}-amd64
-
-  - name_template: netbirdio/signal:{{ .Version }}
-    image_templates:
-      - netbirdio/signal:{{ .Version }}-arm64v8
-      - netbirdio/signal:{{ .Version }}-arm
-      - netbirdio/signal:{{ .Version }}-amd64
-
-  - name_template: netbirdio/signal:latest
-    image_templates:
-      - netbirdio/signal:{{ .Version }}-arm64v8
-      - netbirdio/signal:{{ .Version }}-arm
-      - netbirdio/signal:{{ .Version }}-amd64
-
-  - name_template: netbirdio/management:{{ .Version }}
-    image_templates:
-      - netbirdio/management:{{ .Version }}-arm64v8
-      - netbirdio/management:{{ .Version }}-arm
-      - netbirdio/management:{{ .Version }}-amd64
-
-  - name_template: netbirdio/management:latest
-    image_templates:
-      - netbirdio/management:{{ .Version }}-arm64v8
-      - netbirdio/management:{{ .Version }}-arm
-      - netbirdio/management:{{ .Version }}-amd64
-
-  - name_template: netbirdio/management:debug-latest
-    image_templates:
-      - netbirdio/management:{{ .Version }}-debug-arm64v8
-      - netbirdio/management:{{ .Version }}-debug-arm
-      - netbirdio/management:{{ .Version }}-debug-amd64
-  - name_template: netbirdio/upload:{{ .Version }}
-    image_templates:
-      - netbirdio/upload:{{ .Version }}-arm64v8
-      - netbirdio/upload:{{ .Version }}-arm
-      - netbirdio/upload:{{ .Version }}-amd64
-
-  - name_template: netbirdio/upload:latest
-    image_templates:
-      - netbirdio/upload:{{ .Version }}-arm64v8
-      - netbirdio/upload:{{ .Version }}-arm
-      - netbirdio/upload:{{ .Version }}-amd64
-
-  - name_template: netbirdio/netbird-server:{{ .Version }}
-    image_templates:
-      - netbirdio/netbird-server:{{ .Version }}-arm64v8
-      - netbirdio/netbird-server:{{ .Version }}-arm
-      - netbirdio/netbird-server:{{ .Version }}-amd64
-
-  - name_template: netbirdio/netbird-server:latest
-    image_templates:
-      - netbirdio/netbird-server:{{ .Version }}-arm64v8
-      - netbirdio/netbird-server:{{ .Version }}-arm
-      - netbirdio/netbird-server:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird:latest
-    image_templates:
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird:{{ .Version }}-rootless
-    image_templates:
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird:rootless-latest
-    image_templates:
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
-      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
-
-  - name_template: ghcr.io/netbirdio/relay:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
-      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/relay:latest
-    image_templates:
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
-      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/signal:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
-      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/signal:latest
-    image_templates:
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
-      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/management:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm
-      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/management:latest
-    image_templates:
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/management:{{ .Version }}-arm
-      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/management:debug-latest
-    image_templates:
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm64v8
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm
-      - ghcr.io/netbirdio/management:{{ .Version }}-debug-amd64
-
-  - name_template: ghcr.io/netbirdio/upload:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
-      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/upload:latest
-    image_templates:
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
-      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird-server:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/netbird-server:latest
-    image_templates:
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-arm
-      - ghcr.io/netbirdio/netbird-server:{{ .Version }}-amd64
-
-  - name_template: netbirdio/reverse-proxy:{{ .Version }}
-    image_templates:
-      - netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-      - netbirdio/reverse-proxy:{{ .Version }}-arm
-      - netbirdio/reverse-proxy:{{ .Version }}-amd64
-
-  - name_template: netbirdio/reverse-proxy:latest
-    image_templates:
-      - netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-      - netbirdio/reverse-proxy:{{ .Version }}-arm
-      - netbirdio/reverse-proxy:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/reverse-proxy:{{ .Version }}
-    image_templates:
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-amd64
-
-  - name_template: ghcr.io/netbirdio/reverse-proxy:latest
-    image_templates:
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm64v8
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-arm
-      - ghcr.io/netbirdio/reverse-proxy:{{ .Version }}-amd64
+dockers_v2:
+   - id: netbird
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird
+     images:
+       - netbirdio/netbird
+       - ghcr.io/netbirdio/netbird
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: client/Dockerfile
+     extra_files:
+       - client/netbird-entrypoint.sh
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm/6
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: netbird-rootless
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird
+     images:
+       - netbirdio/netbird
+       - ghcr.io/netbirdio/netbird
+     tags:
+       - "v{{ .Version }}-rootless"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: client/Dockerfile-rootless
+     extra_files:
+       - client/netbird-entrypoint.sh
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm/6
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: relay
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-relay
+     images:
+       - netbirdio/relay
+       - ghcr.io/netbirdio/relay
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: relay/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: signal
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-signal
+     images:
+       - netbirdio/signal
+       - ghcr.io/netbirdio/signal
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: signal/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: management
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-mgmt
+     images:
+       - netbirdio/management
+       - ghcr.io/netbirdio/management
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: management/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: upload
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-upload
+     images:
+       - netbirdio/upload
+       - ghcr.io/netbirdio/upload
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: upload-server/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: netbird-server
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-server
+     images:
+       - netbirdio/netbird-server
+       - ghcr.io/netbirdio/netbird-server
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: combined/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
+   - id: netbird-proxy
+     disable: "{{ .Env.SKIP_DOCKER_PUSH }}"
+     ids:
+       - netbird-proxy
+     images:
+       - netbirdio/reverse-proxy
+       - ghcr.io/netbirdio/reverse-proxy
+     tags:
+       - "{{ .Version }}"
+       - "{{ if eq .Env.SKIP_PUBLISH \"false\" }}latest{{ end }}"
+     dockerfile: proxy/Dockerfile
+     platforms:
+       - linux/amd64
+       - linux/arm64
+       - linux/arm
+     annotations:
+       "org.opencontainers.image.created": "{{.Date}}"
+       "org.opencontainers.image.title": "{{.ProjectName}}"
+       "org.opencontainers.image.version": "{{.Version}}"
+       "org.opencontainers.image.revision": "{{.FullCommit}}"
+       "org.opencontainers.image.source": "{{.GitURL}}"
+       "maintainer": "dev@netbird.io"
 
 brews:
   - ids:
       - default
+    skip_upload: "{{ .Env.SKIP_PUBLISH }}"
     repository:
       owner: netbirdio
       name: homebrew-tap
@@ -902,6 +442,7 @@ brews:
 
 uploads:
   - name: debian
+    skip: "{{ .Env.SKIP_PUBLISH }}"
     ids:
       - netbird_deb
     mode: archive
@@ -910,6 +451,7 @@ uploads:
     method: PUT
 
   - name: yum
+    skip: "{{ .Env.SKIP_PUBLISH }}"
     ids:
       - netbird_rpm
     mode: archive
@@ -922,9 +464,13 @@ checksum:
     - glob: ./infrastructure_files/getting-started-with-zitadel.sh
     - glob: ./release_files/install.sh
     - glob: ./infrastructure_files/getting-started.sh
+    - glob: ./infrastructure_files/getting-started-enterprise.sh
+    - glob: ./infrastructure_files/migrate-to-enterprise.sh
 
 release:
   extra_files:
     - glob: ./infrastructure_files/getting-started-with-zitadel.sh
     - glob: ./release_files/install.sh
     - glob: ./infrastructure_files/getting-started.sh
+    - glob: ./infrastructure_files/getting-started-enterprise.sh
+    - glob: ./infrastructure_files/migrate-to-enterprise.sh

.goreleaser_ui.yaml

@@ -1,6 +1,16 @@
 version: 2
-
+env:
+  - SKIP_PUBLISH={{ if index .Env "SKIP_PUBLISH" }}{{ .Env.SKIP_PUBLISH }}{{ else }}true{{ end }}
 project_name: netbird-ui
+
+before:
+  hooks:
+    # Bindings are gitignored; regenerate before the frontend build so
+    # the @wailsio/runtime Vite plugin can resolve them (vite refuses to
+    # build without them).
+    - sh -c 'cd client/ui && wails3 generate bindings -clean=true -ts'
+    - sh -c 'cd client/ui/frontend && pnpm install --frozen-lockfile && pnpm build'
+
 builds:
   - id: netbird-ui
     dir: client/ui
@@ -61,6 +71,8 @@ nfpms:
   - maintainer: Netbird <dev@netbird.io>
     description: Netbird client UI.
     homepage: https://netbird.io/
+    license: BSD-3-Clause
+    vendor: NetBird
     id: netbird_ui_deb
     package_name: netbird-ui
     builds:
@@ -70,9 +82,9 @@ nfpms:
     scripts:
       postinstall: "release_files/ui-post-install.sh"
     contents:
-      - src: client/ui/build/netbird.desktop
-        dst: /usr/share/applications/netbird.desktop
-      - src: client/ui/assets/netbird.png
+      - src: client/ui/build/linux/netbird.desktop
+        dst: /usr/share/applications/org.wails.netbird.desktop
+      - src: client/ui/build/appicon.png
         dst: /usr/share/pixmaps/netbird.png
     dependencies:
       - netbird
@@ -80,6 +92,8 @@ nfpms:
   - maintainer: Netbird <dev@netbird.io>
     description: Netbird client UI.
     homepage: https://netbird.io/
+    license: BSD-3-Clause
+    vendor: NetBird
     id: netbird_ui_rpm
     package_name: netbird-ui
     builds:
@@ -89,18 +103,20 @@ nfpms:
     scripts:
       postinstall: "release_files/ui-post-install.sh"
     contents:
-      - src: client/ui/build/netbird.desktop
-        dst: /usr/share/applications/netbird.desktop
-      - src: client/ui/assets/netbird.png
+      - src: client/ui/build/linux/netbird.desktop
+        dst: /usr/share/applications/org.wails.netbird.desktop
+      - src: client/ui/build/appicon.png
         dst: /usr/share/pixmaps/netbird.png
     dependencies:
       - netbird
+
     rpm:
       signature:
         key_file: '{{ if index .Env "GPG_RPM_KEY_FILE" }}{{ .Env.GPG_RPM_KEY_FILE }}{{ end }}'
 
 uploads:
   - name: debian
+    skip: "{{ .Env.SKIP_PUBLISH }}"
     ids:
       - netbird_ui_deb
     mode: archive
@@ -109,6 +125,7 @@ uploads:
     method: PUT
 
   - name: yum
+    skip: "{{ .Env.SKIP_PUBLISH }}"
     ids:
       - netbird_ui_rpm
     mode: archive

.goreleaser_ui_darwin.yaml

@@ -1,6 +1,15 @@
 version: 2
 
 project_name: netbird-ui
+
+before:
+  hooks:
+    # Bindings are gitignored; regenerate before the frontend build so
+    # the @wailsio/runtime Vite plugin can resolve them (vite refuses to
+    # build without them).
+    - sh -c 'cd client/ui && wails3 generate bindings -clean=true -ts'
+    - sh -c 'cd client/ui/frontend && pnpm install --frozen-lockfile && pnpm build'
+
 builds:
   - id: netbird-ui-darwin
     dir: client/ui
@@ -20,8 +29,6 @@ builds:
     ldflags:
       - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
     mod_timestamp: "{{ .CommitTimestamp }}"
-    tags:
-      - load_wgnt_from_rsrc
 
 universal_binaries:
   - id: netbird-ui-darwin

CONTRIBUTING.md

@@ -79,13 +79,21 @@ dependencies are installed. Here is a short guide on how that can be done.
 
 ### Requirements
 
-#### Go 1.21
+#### Go 1.25
 
 Follow the installation guide from https://go.dev/
 
-#### UI client - Fyne toolkit 
+#### UI client - Wails v3 + React
 
-We use the fyne toolkit in our UI client. You can follow its requirement guide to have all its dependencies installed: https://developer.fyne.io/started/#prerequisites
+The desktop UI client (`client/ui`) is built with [Wails v3](https://v3.wails.io/) and a React frontend rendered in a WebView. To build it you need:
+
+- Go ≥ 1.25
+- Node ≥ 20 and **pnpm** (`corepack enable && corepack prepare pnpm@latest --activate`)
+- The `wails3` CLI: `go install github.com/wailsapp/wails/v3/cmd/wails3@latest`
+- The `task` runner: `go install github.com/go-task/task/v3/cmd/task@latest`
+- Linux only: `libwebkitgtk-6.0-dev`, `libgtk-4-dev`, `libsoup-3.0-dev`
+
+All UI build, dev-loop, and cross-compile commands are described in the [UI client](#ui-client) section below.
 
 #### gRPC
 You can follow the instructions from the quickstarter guide https://grpc.io/docs/languages/go/quickstart/#prerequisites and then run the `generate.sh` files located in each `proto` directory to generate changes.
@@ -214,6 +222,39 @@ To start NetBird the client in the foreground:
 sudo ./client up --log-level debug --log-file console
 ```
 > On Windows use a powershell with administrator privileges
+
+#### UI client
+
+The desktop UI lives in `client/ui` and is built with Wails v3 (see [Requirements](#ui-client---wails-v3--react)). All commands run from `client/ui`.
+
+Live-reload development (Vite + Go binary + `*.go` watcher):
+
+```
+cd client/ui
+task dev
+```
+
+Pass daemon flags after `--`:
+
+```
+task dev -- --daemon-addr=tcp://127.0.0.1:41731
+```
+
+Production build (frontend assets embedded into the binary, output in `client/ui/bin/`):
+
+```
+cd client/ui
+task build
+```
+
+Cross-compile the Windows binary from Linux (requires the mingw-w64 toolchain, e.g. `sudo apt install gcc-mingw-w64-x86-64`):
+
+```
+CGO_ENABLED=1 task windows:build
+```
+
+> macOS cross-compile from Linux is not supported (signing and notarization need a real Mac).
+
 #### Signal service
 
 To start NetBird's signal, execute:
@@ -251,10 +292,10 @@ Create dist directory
 mkdir -p dist/netbird_windows_amd64
 ```
 
-UI client
+UI client (built with Wails v3 — see the [UI client](#ui-client) section above)
 ```shell
-CC=x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -o netbird-ui.exe -ldflags "-s -w -H windowsgui" ./client/ui
-mv netbird-ui.exe ./dist/netbird_windows_amd64/
+(cd client/ui && CGO_ENABLED=1 task windows:build)
+mv client/ui/bin/netbird-ui.exe ./dist/netbird_windows_amd64/
 ```
 
 Client
@@ -291,8 +332,6 @@ go test -exec sudo ./...
 ```
 > On Windows use a powershell with administrator privileges
 
-> Non-GTK environments will need the `libayatana-appindicator3-dev` (debian/ubuntu) package installed
-
 ## Checklist before submitting a PR
 As a critical network service and open-source project, we must enforce a few things before submitting the pull-requests:
 - Keep functions as simple as possible, with a single purpose

Makefile

@@ -1,4 +1,4 @@
-.PHONY: lint lint-all lint-install setup-hooks
+.PHONY: lint lint-all lint-install setup-hooks test-unit test-privileged
 GOLANGCI_LINT := $(shell pwd)/bin/golangci-lint
 
 # Install golangci-lint locally if needed
@@ -25,3 +25,15 @@ setup-hooks:
 	@git config core.hooksPath .githooks
 	@chmod +x .githooks/pre-push
 	@echo "✅ Git hooks configured! Pre-push will now run 'make lint'"
+
+# Host-safe unit tests: excludes the privileged-tagged tests (root / system-mutating).
+# Runs as a normal user with no sudo and leaves host networking untouched.
+test-unit:
+	@go test -tags devcert -timeout 10m ./...
+
+# Privileged suite: runs the `privileged`-tagged tests inside a --privileged
+# --cap-add=NET_ADMIN container via the ory/dockertest harness. Requires Docker.
+# Narrow the run with env vars, e.g.:
+#   PRIV_RUN=TestNftablesManager PRIV_PKGS=./client/firewall/nftables/... make test-privileged
+test-privileged:
+	@go test -tags 'devcert privileged' -timeout 30m -run TestRunPrivilegedSuiteInDocker -v ./client/testutil/privileged/...

README.md

@@ -33,10 +33,15 @@
   <br/>
   <br/>
   <strong>
-    🚀 <a href="https://careers.netbird.io">We are hiring! Join us at careers.netbird.io</a>
+    🚀 <a href="https://netbird.io/careers">We are hiring! Join us at https://netbird.io/careers</a>
   </strong>
 </p>
 
+> ### 🤖 NetBird Agent Network (Beta)
+> Identity-aware access control for AI agents — keyless access to LLM APIs and private
+> resources over the encrypted NetBird tunnel. See [`agent-network/`](agent-network/) or
+> read the docs at **[netbird.ai](https://netbird.ai)**.
+
 **NetBird combines a configuration-free peer-to-peer private network and a centralized access control system in a single platform, making it easy to create secure private networks for your organization or home.**
 
 **Connect.** NetBird creates a WireGuard-based overlay network that automatically connects your machines over an encrypted tunnel, leaving behind the hassle of opening ports, complex firewall rules, VPN gateways, and so forth.

agent-network/README.md

@@ -0,0 +1,39 @@
+# NetBird Agent Network
+
+Agent Network is NetBird's access control layer for AI agents and the people who run
+them. It gives every agent a real identity, tied to your identity provider (IdP), and
+governs what it can reach — the LLM APIs and AI gateways it can call, and the internal
+resources it can access. Traffic flows only over the encrypted NetBird tunnel, scoped by
+policy, with no API keys to leak.
+
+> **Beta.** Agent Network is open source and can be self-hosted on your own
+> infrastructure.
+
+## How it works
+
+Agent Network is built on two existing NetBird capabilities:
+
+- **Overlay network** — the encrypted WireGuard mesh between peers.
+- **Reverse proxy** — a NetBird peer that terminates LLM requests, establishes the
+  caller's identity, evaluates policies/limits/guardrails, injects the upstream provider
+  key server-side, forwards to the API or gateway, and records usage.
+
+LLM traffic is routed through the proxy's identity-aware pipeline, while internal
+resources (databases, internal APIs, self-hosted models) are reached directly over
+peer-to-peer WireGuard tunnels, governed by the same identities and access policies.
+
+## Where the code lives
+
+There is no separate "agent-network" service — it reuses the reverse-proxy and management
+components:
+
+- [`proxy/`](../proxy) — the NetBird reverse proxy that serves the agent network endpoint
+  and runs the per-request middleware pipeline.
+- [`management/internals/modules/reverseproxy/`](../management/internals/modules/reverseproxy)
+  — the management-side control plane: providers, policies, guardrails, limits, routing,
+  and usage/access logs.
+
+## Documentation
+
+Full documentation, architecture, and quickstart:
+**https://docs.netbird.io/agent-network**

client/Dockerfile

@@ -4,7 +4,7 @@
 #   sudo podman build -t localhost/netbird:latest -f client/Dockerfile --ignorefile .dockerignore-client .
 #   sudo podman run --rm -it --cap-add={BPF,NET_ADMIN,NET_RAW} localhost/netbird:latest
 
-FROM alpine:3.23.3
+FROM alpine:3.24
 # iproute2: busybox doesn't display ip rules properly
 RUN apk add --no-cache \
     bash \
@@ -21,7 +21,7 @@ ENV \
     NB_ENTRYPOINT_SERVICE_TIMEOUT="30"
 
 ENTRYPOINT [ "/usr/local/bin/netbird-entrypoint.sh" ]
-
-ARG NETBIRD_BINARY=netbird
+ARG TARGETPLATFORM
+ARG NETBIRD_BINARY=$TARGETPLATFORM/netbird
 COPY client/netbird-entrypoint.sh /usr/local/bin/netbird-entrypoint.sh
 COPY "${NETBIRD_BINARY}"  /usr/local/bin/netbird

client/Dockerfile-rootless

@@ -4,7 +4,7 @@
 #   podman build -t localhost/netbird:latest -f client/Dockerfile --ignorefile .dockerignore-client .
 #   podman run --rm -it --cap-add={BPF,NET_ADMIN,NET_RAW} localhost/netbird:latest
 
-FROM alpine:3.22.0
+FROM alpine:3.24
 
 RUN apk add --no-cache \
       bash \
@@ -27,7 +27,7 @@ ENV \
     NB_ENTRYPOINT_SERVICE_TIMEOUT="30"
 
 ENTRYPOINT [ "/usr/local/bin/netbird-entrypoint.sh" ]
-
-ARG NETBIRD_BINARY=netbird
+ARG TARGETPLATFORM
+ARG NETBIRD_BINARY=$TARGETPLATFORM/netbird
 COPY client/netbird-entrypoint.sh /usr/local/bin/netbird-entrypoint.sh
 COPY "${NETBIRD_BINARY}"  /usr/local/bin/netbird

client/android/env_list.go

@@ -10,7 +10,7 @@ var (
 	EnvKeyNBForceRelay = peer.EnvKeyNBForceRelay
 
 	// EnvKeyNBLazyConn Exported for Android java client to configure lazy connection
-	EnvKeyNBLazyConn = lazyconn.EnvEnableLazyConn
+	EnvKeyNBLazyConn = lazyconn.EnvLazyConn
 
 	// EnvKeyNBInactivityThreshold Exported for Android java client to configure connection inactivity threshold
 	EnvKeyNBInactivityThreshold = lazyconn.EnvInactivityThreshold

client/android/profile_manager.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
 
 	log "github.com/sirupsen/logrus"
 
@@ -24,6 +23,7 @@ const (
 
 // Profile represents a profile for gomobile
 type Profile struct {
+	ID       string
 	Name     string
 	IsActive bool
 }
@@ -53,10 +53,10 @@ func (p *ProfileArray) Get(i int) *Profile {
 ├── state.json                                  ← Default profile state
 ├── active_profile.json                         ← Active profile tracker (JSON with Name + Username)
 └── profiles/                                   ← Subdirectory for non-default profiles
-    ├── work.json                              ← Work profile config
-    ├── work.state.json                        ← Work profile state
-    ├── personal.json                          ← Personal profile config
-    └── personal.state.json                    ← Personal profile state
+    ├── work.json                              			← Legacy work profile config
+    ├── work.state.json                        			← Legacy work profile state
+    ├── 4c5f5c8198c3989cffb5b5394f5a7ae0.json  			← ID profile config
+    ├── 4c5f5c8198c3989cffb5b5394f5a7ae0.state.json ← ID profile state
 */
 
 // ProfileManager manages profiles for Android
@@ -99,6 +99,7 @@ func (pm *ProfileManager) ListProfiles() (*ProfileArray, error) {
 	var profiles []*Profile
 	for _, p := range internalProfiles {
 		profiles = append(profiles, &Profile{
+			ID:       p.ID.String(),
 			Name:     p.Name,
 			IsActive: p.IsActive,
 		})
@@ -108,55 +109,65 @@ func (pm *ProfileManager) ListProfiles() (*ProfileArray, error) {
 }
 
 // GetActiveProfile returns the currently active profile name
-func (pm *ProfileManager) GetActiveProfile() (string, error) {
+func (pm *ProfileManager) GetActiveProfile() (*Profile, error) {
 	// Use ServiceManager to stay consistent with ListProfiles
 	// ServiceManager uses active_profile.json
 	activeState, err := pm.serviceMgr.GetActiveProfileState()
 	if err != nil {
-		return "", fmt.Errorf("failed to get active profile: %w", err)
+		return nil, fmt.Errorf("failed to get active profile: %w", err)
 	}
-	return activeState.Name, nil
+
+	// ActiveProfileState only stores the ID (and username), not the display
+	// name. Resolve the ID to the full profile so callers get the real Name.
+	prof, err := pm.serviceMgr.ResolveProfile(activeState.ID.String(), androidUsername)
+	if err != nil {
+		return nil, fmt.Errorf("failed to resolve active profile %q: %w", activeState.ID, err)
+	}
+	return &Profile{ID: prof.ID.String(), Name: prof.Name, IsActive: true}, nil
 }
 
 // SwitchProfile switches to a different profile
-func (pm *ProfileManager) SwitchProfile(profileName string) error {
+func (pm *ProfileManager) SwitchProfile(id string) error {
 	// Use ServiceManager to stay consistent with ListProfiles
 	// ServiceManager uses active_profile.json
 	err := pm.serviceMgr.SetActiveProfileState(&profilemanager.ActiveProfileState{
-		Name:     profileName,
+		ID:       profilemanager.ID(id),
 		Username: androidUsername,
 	})
 	if err != nil {
 		return fmt.Errorf("failed to switch profile: %w", err)
 	}
 
-	log.Infof("switched to profile: %s", profileName)
+	log.Infof("switched to profile: %s", id)
 	return nil
 }
 
 // AddProfile creates a new profile
 func (pm *ProfileManager) AddProfile(profileName string) error {
 	// Use ServiceManager (creates profile in profiles/ directory)
-	if err := pm.serviceMgr.AddProfile(profileName, androidUsername); err != nil {
+	profile, err := pm.serviceMgr.AddProfile(profileName, androidUsername)
+	if err != nil {
 		return fmt.Errorf("failed to add profile: %w", err)
 	}
 
-	log.Infof("created new profile: %s", profileName)
+	log.Infof("created new profile: %s", profile.ID)
 	return nil
 }
 
 // LogoutProfile logs out from a profile (clears authentication)
-func (pm *ProfileManager) LogoutProfile(profileName string) error {
-	profileName = sanitizeProfileName(profileName)
-
-	configPath, err := pm.getProfileConfigPath(profileName)
+func (pm *ProfileManager) LogoutProfile(id string) error {
+	configPath, err := pm.getProfileConfigPath(id)
 	if err != nil {
 		return err
 	}
 
+	if !profilemanager.IsValidProfileFilenameStem(profilemanager.ID(id)) {
+		return fmt.Errorf("id '%s' is not valid", id)
+	}
+
 	// Check if profile exists
 	if _, err := os.Stat(configPath); os.IsNotExist(err) {
-		return fmt.Errorf("profile '%s' does not exist", profileName)
+		return fmt.Errorf("profile '%s' does not exist", id)
 	}
 
 	// Read current config using internal profilemanager
@@ -174,53 +185,57 @@ func (pm *ProfileManager) LogoutProfile(profileName string) error {
 		return fmt.Errorf("failed to save config: %w", err)
 	}
 
-	log.Infof("logged out from profile: %s", profileName)
+	log.Infof("logged out from profile: %s", id)
 	return nil
 }
 
 // RemoveProfile deletes a profile
-func (pm *ProfileManager) RemoveProfile(profileName string) error {
+func (pm *ProfileManager) RemoveProfile(id string) error {
 	// Use ServiceManager (removes profile from profiles/ directory)
-	if err := pm.serviceMgr.RemoveProfile(profileName, androidUsername); err != nil {
+	if err := pm.serviceMgr.RemoveProfile(profilemanager.ID(id), androidUsername); err != nil {
 		return fmt.Errorf("failed to remove profile: %w", err)
 	}
 
-	log.Infof("removed profile: %s", profileName)
+	log.Infof("removed profile: %s", id)
 	return nil
 }
 
 // getProfileConfigPath returns the config file path for a profile
 // This is needed for Android-specific path handling (netbird.cfg for default profile)
-func (pm *ProfileManager) getProfileConfigPath(profileName string) (string, error) {
-	if profileName == "" || profileName == profilemanager.DefaultProfileName {
+func (pm *ProfileManager) getProfileConfigPath(id string) (string, error) {
+	if !profilemanager.IsValidProfileFilenameStem(profilemanager.ID(id)) {
+		return "", fmt.Errorf("id %q is not valid", id)
+	}
+
+	if id == profilemanager.DefaultProfileName {
 		// Android uses netbird.cfg for default profile instead of default.json
 		// Default profile is stored in root configDir, not in profiles/
 		return filepath.Join(pm.configDir, defaultConfigFilename), nil
 	}
 
-	// Non-default profiles are stored in profiles subdirectory
-	// This matches the Java Preferences.java expectation
-	profileName = sanitizeProfileName(profileName)
 	profilesDir := filepath.Join(pm.configDir, profilesSubdir)
-	return filepath.Join(profilesDir, profileName+".json"), nil
+	return filepath.Join(profilesDir, id+".json"), nil
 }
 
-// GetConfigPath returns the config file path for a given profile
+// GetConfigPath returns the config file path for a given profile id
 // Java should call this instead of constructing paths with Preferences.configFile()
-func (pm *ProfileManager) GetConfigPath(profileName string) (string, error) {
-	return pm.getProfileConfigPath(profileName)
+func (pm *ProfileManager) GetConfigPath(id string) (string, error) {
+	return pm.getProfileConfigPath(id)
 }
 
 // GetStateFilePath returns the state file path for a given profile
 // Java should call this instead of constructing paths with Preferences.stateFile()
-func (pm *ProfileManager) GetStateFilePath(profileName string) (string, error) {
-	if profileName == "" || profileName == profilemanager.DefaultProfileName {
+func (pm *ProfileManager) GetStateFilePath(id string) (string, error) {
+	if id == "" || id == profilemanager.DefaultProfileName {
 		return filepath.Join(pm.configDir, "state.json"), nil
 	}
 
-	profileName = sanitizeProfileName(profileName)
+	if !profilemanager.IsValidProfileFilenameStem(profilemanager.ID(id)) {
+		return "", fmt.Errorf("id %q is not valid", id)
+	}
+
 	profilesDir := filepath.Join(pm.configDir, profilesSubdir)
-	return filepath.Join(profilesDir, profileName+".state.json"), nil
+	return filepath.Join(profilesDir, id+".state.json"), nil
 }
 
 // GetActiveConfigPath returns the config file path for the currently active profile
@@ -230,7 +245,7 @@ func (pm *ProfileManager) GetActiveConfigPath() (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("failed to get active profile: %w", err)
 	}
-	return pm.GetConfigPath(activeProfile)
+	return pm.GetConfigPath(activeProfile.ID)
 }
 
 // GetActiveStateFilePath returns the state file path for the currently active profile
@@ -240,18 +255,5 @@ func (pm *ProfileManager) GetActiveStateFilePath() (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("failed to get active profile: %w", err)
 	}
-	return pm.GetStateFilePath(activeProfile)
-}
-
-// sanitizeProfileName removes invalid characters from profile name
-func sanitizeProfileName(name string) string {
-	// Keep only alphanumeric, underscore, and hyphen
-	var result strings.Builder
-	for _, r := range name {
-		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') ||
-			(r >= '0' && r <= '9') || r == '_' || r == '-' {
-			result.WriteRune(r)
-		}
-	}
-	return result.String()
+	return pm.GetStateFilePath(activeProfile.ID)
 }

client/cmd/debug.go

@@ -3,12 +3,14 @@ package cmd
 import (
 	"context"
 	"fmt"
+	"os/user"
 	"strings"
 	"time"
 
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/encoding/protojson"
 	"google.golang.org/protobuf/types/known/durationpb"
 
 	"github.com/netbirdio/netbird/client/internal"
@@ -19,6 +21,7 @@ import (
 	"github.com/netbirdio/netbird/client/server"
 	mgmProto "github.com/netbirdio/netbird/shared/management/proto"
 	"github.com/netbirdio/netbird/upload-server/types"
+	"github.com/netbirdio/netbird/version"
 )
 
 const errCloseConnection = "Failed to close connection: %v"
@@ -84,6 +87,73 @@ var persistenceCmd = &cobra.Command{
 	RunE:    setSyncResponsePersistence,
 }
 
+var debugConfigCmd = &cobra.Command{
+	Use:     "config",
+	Example: "  netbird debug config",
+	Short:   "Dump the effective configuration",
+	Long:    "Prints the daemon's resolved configuration (after applying defaults, file, env, CLI input, and MDM policy overrides) as JSON. Includes the list of MDM-managed fields.",
+	RunE:    debugConfigDump,
+}
+
+// debugConfigDump implements `netbird debug config`. It resolves the
+// active profile, queries the daemon for the effective configuration
+// via GetConfig, and prints the resulting GetConfigResponse as JSON
+// (via protojson with EmitUnpopulated=true so the output is stable
+// across runs and includes zero-valued fields).
+//
+// Useful for verifying MDM enforcement end-to-end: the response's
+// mDMManagedFields array is the single source of truth for "which
+// fields is the daemon currently enforcing from the MDM source", and
+// every config field side-by-side with that list confirms the merge
+// result. Secrets in the response (e.g. PreSharedKey) are already
+// redacted by the daemon-side handler.
+func debugConfigDump(cmd *cobra.Command, _ []string) error {
+	pm := profilemanager.NewProfileManager()
+	activeProf, err := pm.GetActiveProfile()
+	if err != nil {
+		return fmt.Errorf("get active profile: %v", err)
+	}
+	currUser, err := user.Current()
+	if err != nil {
+		return fmt.Errorf("get current user: %v", err)
+	}
+
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf(errCloseConnection, err)
+		}
+	}()
+
+	client := proto.NewDaemonServiceClient(conn)
+	resp, err := client.GetConfig(cmd.Context(), &proto.GetConfigRequest{
+		ProfileName: string(activeProf.ID),
+		Username:    currUser.Username,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to get config: %v", status.Convert(err).Message())
+	}
+
+	// Use protojson so well-known fields render correctly; emit defaults so
+	// the operator sees every field even when zero/empty.
+	m := protojson.MarshalOptions{Multiline: true, Indent: "  ", EmitUnpopulated: true}
+	out, err := m.Marshal(resp)
+	if err != nil {
+		return fmt.Errorf("marshal config: %w", err)
+	}
+	cmd.Println(string(out))
+	return nil
+}
+
+// debugBundle requests the daemon to create a debug bundle and prints
+// the resulting local file path and, if uploaded, the uploaded file
+// key. It uses the package flags (anonymize, system info, log file
+// count, CLI version, optional upload URL) to configure the bundle
+// request. Returns an error if the RPC fails or if the daemon reports
+// an upload failure reason.
 func debugBundle(cmd *cobra.Command, _ []string) error {
 	conn, err := getClient(cmd)
 	if err != nil {
@@ -100,6 +170,7 @@ func debugBundle(cmd *cobra.Command, _ []string) error {
 		Anonymize:    anonymizeFlag,
 		SystemInfo:   systemInfoFlag,
 		LogFileCount: logFileCount,
+		CliVersion:   version.NetbirdVersion(),
 	}
 	if uploadBundleFlag {
 		request.UploadURL = uploadBundleURLFlag
@@ -298,6 +369,7 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 		Anonymize:    anonymizeFlag,
 		SystemInfo:   systemInfoFlag,
 		LogFileCount: logFileCount,
+		CliVersion:   version.NetbirdVersion(),
 	}
 	if uploadBundleFlag {
 		request.UploadURL = uploadBundleURLFlag
@@ -432,6 +504,7 @@ func generateDebugBundle(config *profilemanager.Config, recorder *peer.Status, c
 			SyncResponse:   syncResponse,
 			LogPath:        logFilePath,
 			CPUProfile:     nil,
+			DaemonVersion:  version.NetbirdVersion(), // acting as daemon
 		},
 		debug.BundleConfig{
 			IncludeSystemInfo: true,

client/cmd/kubernetes.go

@@ -0,0 +1,301 @@
+package cmd
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"slices"
+	"strings"
+
+	"github.com/goccy/go-yaml"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+const (
+	KubernetesDNSSuffix = "netbird-kubeapi-proxy"
+)
+
+var kubernetesCmd = &cobra.Command{
+	Use:   "kubernetes",
+	Short: "Kubernetes cluster commands.",
+	Long:  "Kubernetes cluster commands.",
+}
+
+var kubernetesListCmd = &cobra.Command{
+	Use:   "list",
+	RunE:  kubernetesList,
+	Short: "List Kubernetes clusters.",
+	Long:  "List Kubernetes clusters by discovering NetBird peers running netbird-kubeapi-proxy.",
+}
+
+var kubernetesWriteKubeconfigCmd = &cobra.Command{
+	Use:   "write-kubeconfig",
+	RunE:  kubernetesWriteKubeconfig,
+	Args:  cobra.ExactArgs(1),
+	Short: "Write kubeconfig for a Kubernetes cluster.",
+	Long:  "Updates kubeconfig in place to allow token-less access to the Kubernetes cluster through NetBird.",
+}
+
+func init() {
+	kubernetesWriteKubeconfigCmd.Flags().String("kubeconfig", "", "path to kubeconfig file")
+}
+
+func kubernetesList(cmd *cobra.Command, _ []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	client := proto.NewDaemonServiceClient(conn)
+	statusResp, err := client.Status(cmd.Context(), &proto.StatusRequest{GetFullPeerStatus: true})
+	if err != nil {
+		return err
+	}
+
+	kcs, err := getKubernetesClusters(cmd.Context(), statusResp.FullStatus.Peers, "")
+	if err != nil {
+		return err
+	}
+	if len(kcs) == 0 {
+		cmd.Println("No Kubernetes clusters available.")
+		return nil
+	}
+	cmd.Println("Available Kubernetes clusters:")
+	for _, k := range kcs {
+		cmd.Printf("\n  - Name: %s\n    FQDN: %s\n    Version: %s\n", k.name, k.url.Host, k.version)
+	}
+	return nil
+}
+
+func kubernetesWriteKubeconfig(cmd *cobra.Command, args []string) error {
+	kubeconfigPath, err := resolveKubeconfigPath(cmd)
+	if err != nil {
+		return err
+	}
+
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	client := proto.NewDaemonServiceClient(conn)
+	statusResp, err := client.Status(cmd.Context(), &proto.StatusRequest{GetFullPeerStatus: true})
+	if err != nil {
+		return err
+	}
+
+	clusterName := args[0]
+	kcs, err := getKubernetesClusters(cmd.Context(), statusResp.FullStatus.Peers, clusterName)
+	if err != nil {
+		return err
+	}
+	if len(kcs) == 0 {
+		return fmt.Errorf("kubernetes cluster named %s not found", clusterName)
+	}
+	if len(kcs) > 1 {
+		return fmt.Errorf("too many Kubernetes clusters returned")
+	}
+	err = writeKubeconfig(kubeconfigPath, kcs[0])
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+type kubernetesCluster struct {
+	name    string
+	url     *url.URL
+	version string
+}
+
+func getKubernetesClusters(ctx context.Context, peers []*proto.PeerState, nameFilter string) ([]kubernetesCluster, error) {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = &tls.Config{
+		InsecureSkipVerify: true,
+	}
+	httpClient := &http.Client{
+		Transport: transport,
+	}
+	resolver := net.Resolver{
+		// Required so both DNS records are returned.
+		// https://github.com/golang/go/issues/17093
+		PreferGo: true,
+	}
+
+	kcs := []kubernetesCluster{}
+	attempted := map[string]struct{}{}
+	for _, peer := range peers {
+		fqdns, err := resolver.LookupAddr(ctx, peer.IP)
+		if err != nil {
+			return nil, err
+		}
+		for _, fqdn := range fqdns {
+			if _, ok := attempted[fqdn]; ok {
+				continue
+			}
+			attempted[fqdn] = struct{}{}
+			comps := strings.Split(fqdn, ".")
+			if len(comps) < 2 {
+				continue
+			}
+			if comps[1] != KubernetesDNSSuffix {
+				continue
+			}
+			if nameFilter != "" && nameFilter != comps[0] {
+				continue
+			}
+			clusterURL, clusterVersion, err := fingerprintClusters(ctx, httpClient, fqdn)
+			if err != nil {
+				log.Debugf("could not fingerprint Kubernetes cluster %s %q", fqdn, err)
+				continue
+			}
+			kc := kubernetesCluster{
+				name:    comps[0],
+				url:     clusterURL,
+				version: clusterVersion,
+			}
+			if nameFilter != "" {
+				return []kubernetesCluster{kc}, nil
+			}
+			kcs = append(kcs, kc)
+		}
+	}
+	return kcs, nil
+}
+
+func fingerprintClusters(ctx context.Context, httpClient *http.Client, fqdn string) (*url.URL, string, error) {
+	clusterURL, err := url.Parse("https://" + fqdn)
+	if err != nil {
+		return nil, "", err
+	}
+	versionURL, err := clusterURL.Parse("/version")
+	if err != nil {
+		return nil, "", err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, versionURL.String(), nil)
+	if err != nil {
+		return nil, "", err
+	}
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return nil, "", err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return nil, "", fmt.Errorf("expected %d response but got %s", http.StatusOK, resp.Status)
+	}
+	b, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, "", err
+	}
+	versionData := map[string]string{}
+	err = json.Unmarshal(b, &versionData)
+	if err != nil {
+		return nil, "", err
+	}
+	version, ok := versionData["gitVersion"]
+	if !ok {
+		return nil, "", errors.New("no version found in response")
+	}
+	return clusterURL, version, nil
+}
+
+func resolveKubeconfigPath(cmd *cobra.Command) (string, error) {
+	if cmd.Flags().Changed("kubeconfig") {
+		path, err := cmd.Flags().GetString("kubeconfig")
+		if err != nil {
+			return "", err
+		}
+		return path, nil
+	}
+	if env := os.Getenv("KUBECONFIG"); env != "" {
+		return env, nil
+	}
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", fmt.Errorf("could not determine home directory: %w", err)
+	}
+	return filepath.Join(home, ".kube", "config"), nil
+}
+
+func writeKubeconfig(kubeconfigPath string, kc kubernetesCluster) error {
+	b, err := os.ReadFile(kubeconfigPath)
+	if err != nil && !errors.Is(err, os.ErrNotExist) {
+		return err
+	}
+	var cfg map[string]any
+	if err := yaml.Unmarshal(b, &cfg); err != nil {
+		return err
+	}
+	if cfg == nil {
+		cfg = map[string]any{
+			"apiVersion": "v1",
+			"kind":       "Config",
+		}
+	}
+
+	cfg["clusters"] = appendWithName(cfg["clusters"], map[string]any{
+		"name": kc.name,
+		"cluster": map[string]any{
+			"server":                   kc.url.String(),
+			"insecure-skip-tls-verify": true,
+		},
+	})
+	cfg["users"] = appendWithName(cfg["users"], map[string]any{
+		"name": "netbird",
+		"user": map[string]any{
+			"token": "none",
+		},
+	})
+	cfg["contexts"] = appendWithName(cfg["contexts"], map[string]any{
+		"name": kc.name,
+		"context": map[string]any{
+			"cluster":   kc.name,
+			"user":      "netbird",
+			"namespace": "default",
+		},
+	})
+	cfg["current-context"] = kc.name
+
+	out, err := yaml.Marshal(cfg)
+	if err != nil {
+		return err
+	}
+	if err := os.WriteFile(kubeconfigPath, out, 0o600); err != nil {
+		return err
+	}
+	return nil
+}
+
+func appendWithName(data any, add map[string]any) any {
+	if data == nil {
+		return []any{add}
+	}
+	v, ok := data.([]any)
+	if !ok {
+		return []any{add}
+	}
+	i := slices.IndexFunc(v, func(item any) bool {
+		m, ok := item.(map[string]any)
+		if !ok {
+			return false
+		}
+		return m["name"] == add["name"]
+	})
+	if i == -1 {
+		return append(v, add)
+	}
+	v[i] = add
+	return v
+}

client/cmd/kubernetes_test.go

@@ -0,0 +1,120 @@
+package cmd
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/spf13/cobra"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFingerprintClusters(t *testing.T) {
+	t.Parallel()
+
+	srv := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		//nolint: errcheck
+		w.Write([]byte(`{"gitVersion": "foobar"}`))
+	}))
+	defer srv.Close()
+
+	clusterURL, clusterVersion, err := fingerprintClusters(t.Context(), srv.Client(), srv.Listener.Addr().String())
+	require.NoError(t, err)
+	require.Equal(t, srv.URL, clusterURL.String())
+	require.Equal(t, "foobar", clusterVersion)
+}
+
+func TestResolveKubeconfigPath(t *testing.T) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		t.Fatalf("could not determine home directory: %v", err)
+	}
+	defaultPath := filepath.Join(home, ".kube", "config")
+	path, err := resolveKubeconfigPath(&cobra.Command{})
+	require.NoError(t, err)
+	require.Equal(t, defaultPath, path)
+
+	flagPath := "flag-path"
+	cmd := &cobra.Command{}
+	cmd.Flags().String("kubeconfig", "", "")
+	err = cmd.Flags().Set("kubeconfig", flagPath)
+	require.NoError(t, err)
+	path, err = resolveKubeconfigPath(cmd)
+	require.NoError(t, err)
+	require.Equal(t, flagPath, path)
+
+	envPath := "env-path"
+	t.Setenv("KUBECONFIG", envPath)
+	path, err = resolveKubeconfigPath(&cobra.Command{})
+	require.NoError(t, err)
+	require.Equal(t, envPath, path)
+}
+
+func TestWriteKubeconfig(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		existing string
+	}{
+		{
+			name: "empty file",
+		},
+		{
+			name: "existing content",
+			existing: `apiVersion: v1
+clusters:
+- cluster:
+    insecure-skip-tls-verify: true
+    server: https://foobar.com
+  name: foo
+current-context: test
+kind: Config
+users: []
+`,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			kubeconfigPath := filepath.Join(t.TempDir(), "config")
+			err := os.WriteFile(kubeconfigPath, []byte(tt.existing), 0o644)
+			require.NoError(t, err)
+
+			kc := kubernetesCluster{
+				name: "foo",
+				url:  &url.URL{Scheme: "https", Host: "example.com"},
+			}
+			err = writeKubeconfig(kubeconfigPath, kc)
+			require.NoError(t, err)
+
+			b, err := os.ReadFile(kubeconfigPath)
+			require.NoError(t, err)
+			expected := `apiVersion: v1
+clusters:
+- cluster:
+    insecure-skip-tls-verify: true
+    server: https://example.com
+  name: foo
+contexts:
+- context:
+    cluster: foo
+    namespace: default
+    user: netbird
+  name: foo
+current-context: foo
+kind: Config
+users:
+- name: netbird
+  user:
+    token: none
+`
+			require.Equal(t, expected, string(b))
+		})
+	}
+
+}

client/cmd/login.go

@@ -22,11 +22,19 @@ import (
 	"github.com/netbirdio/netbird/util"
 )
 
+// extendSessionFlag drives the `netbird login --extend` flow: refresh the
+// SSO session expiry on the management server without tearing down the
+// tunnel. Mutually exclusive with setup-key login (a setup-key cannot
+// refresh an SSO-tracked peer — see auth.errSetupKeyOnSSOExpiredPeer).
+var extendSessionFlag bool
+
 func init() {
 	loginCmd.PersistentFlags().BoolVar(&noBrowser, noBrowserFlag, false, noBrowserDesc)
 	loginCmd.PersistentFlags().BoolVar(&showQR, showQRFlag, false, showQRDesc)
 	loginCmd.PersistentFlags().StringVar(&profileName, profileNameFlag, "", profileNameDesc)
 	loginCmd.PersistentFlags().StringVarP(&configPath, "config", "c", "", "(DEPRECATED) Netbird config file location")
+	loginCmd.PersistentFlags().BoolVar(&extendSessionFlag, "extend", false,
+		"refresh the SSO session expiry without tearing down the tunnel (requires an active connection)")
 }
 
 var loginCmd = &cobra.Command{
@@ -61,6 +69,16 @@ var loginCmd = &cobra.Command{
 			return err
 		}
 
+		if extendSessionFlag {
+			if providedSetupKey != "" {
+				return fmt.Errorf("--extend cannot be combined with a setup key; setup keys can only enrol new peers")
+			}
+			if err := doExtendSession(ctx, cmd); err != nil {
+				return fmt.Errorf("extend session failed: %v", err)
+			}
+			return nil
+		}
+
 		// workaround to run without service
 		if util.FindFirstLogPath(logFiles) == "" {
 			if err := doForegroundLogin(ctx, cmd, providedSetupKey, activeProf); err != nil {
@@ -96,17 +114,19 @@ func doDaemonLogin(ctx context.Context, cmd *cobra.Command, providedSetupKey str
 		dnsLabelsReq = dnsLabelsValidated.ToSafeStringList()
 	}
 
+	handle := activeProf.ID.String()
+
 	loginRequest := proto.LoginRequest{
 		SetupKey:            providedSetupKey,
 		ManagementUrl:       managementURL,
 		IsUnixDesktopClient: isUnixRunningDesktop(),
 		Hostname:            hostName,
 		DnsLabels:           dnsLabelsReq,
-		ProfileName:         &activeProf.Name,
+		ProfileName:         &handle,
 		Username:            &username,
 	}
 
-	profileState, err := pm.GetProfileState(activeProf.Name)
+	profileState, err := pm.GetProfileState(activeProf.ID)
 	if err != nil {
 		log.Debugf("failed to get profile state for login hint: %v", err)
 	} else if profileState.Email != "" {
@@ -150,6 +170,65 @@ func doDaemonLogin(ctx context.Context, cmd *cobra.Command, providedSetupKey str
 	return nil
 }
 
+// doExtendSession drives the daemon's RequestExtendAuthSession /
+// WaitExtendAuthSession pair. The user is sent through a regular SSO flow
+// (browser + verification URL) and the resulting JWT is forwarded to the
+// management server's ExtendAuthSession RPC. The tunnel stays up
+// throughout — no Down/Up, no network-map resync.
+func doExtendSession(ctx context.Context, cmd *cobra.Command) error {
+	conn, err := DialClientGRPCServer(ctx, daemonAddr)
+	if err != nil {
+		//nolint
+		return fmt.Errorf("failed to connect to daemon error: %v\n"+
+			"If the daemon is not running please run: "+
+			"\nnetbird service install \nnetbird service start\n", err)
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+
+	req := &proto.RequestExtendAuthSessionRequest{}
+	// Pre-fill the IdP login hint from the active profile so the user
+	// doesn't have to retype their email. Best-effort: we still proceed
+	// without a hint if the lookup fails.
+	pm := profilemanager.NewProfileManager()
+	if active, perr := pm.GetActiveProfile(); perr == nil {
+		if profState, sperr := pm.GetProfileState(active.ID); sperr == nil && profState.Email != "" {
+			req.Hint = &profState.Email
+		}
+	}
+
+	startResp, err := client.RequestExtendAuthSession(ctx, req)
+	if err != nil {
+		return fmt.Errorf("start extend session: %v", err)
+	}
+
+	uri := startResp.GetVerificationURIComplete()
+	if uri == "" {
+		uri = startResp.GetVerificationURI()
+	}
+	openURL(cmd, uri, startResp.GetUserCode(), noBrowser, showQR)
+
+	waitResp, err := client.WaitExtendAuthSession(ctx, &proto.WaitExtendAuthSessionRequest{
+		DeviceCode: startResp.GetDeviceCode(),
+		UserCode:   startResp.GetUserCode(),
+	})
+	if err != nil {
+		return fmt.Errorf("wait for extend session: %v", err)
+	}
+
+	if ts := waitResp.GetSessionExpiresAt(); ts.IsValid() && !ts.AsTime().IsZero() {
+		deadline := ts.AsTime().Local()
+		cmd.Printf("Session extended. New expiry: %s\n", deadline.Format("2006-01-02 15:04:05 MST"))
+	} else {
+		// Management reported the peer is not eligible (e.g. login
+		// expiration disabled on the account). Surface that fact
+		// instead of pretending the call succeeded.
+		cmd.Println("Session extension call completed, but the management server did not return a new deadline (peer may not be SSO-tracked or login expiration is disabled).")
+	}
+	return nil
+}
+
 func getActiveProfile(ctx context.Context, pm *profilemanager.ProfileManager, profileName string, username string) (*profilemanager.Profile, error) {
 	// switch profile if provided
 
@@ -170,14 +249,13 @@ func getActiveProfile(ctx context.Context, pm *profilemanager.ProfileManager, pr
 	return activeProf, nil
 }
 
-func switchProfileOnDaemon(ctx context.Context, pm *profilemanager.ProfileManager, profileName string, username string) error {
-	err := switchProfile(context.Background(), profileName, username)
+func switchProfileOnDaemon(ctx context.Context, pm *profilemanager.ProfileManager, handle string, username string) error {
+	resolvedID, err := switchProfile(ctx, handle, username)
 	if err != nil {
 		return fmt.Errorf("switch profile on daemon: %v", err)
 	}
 
-	err = pm.SwitchProfile(profileName)
-	if err != nil {
+	if err := pm.SwitchProfile(resolvedID); err != nil {
 		return fmt.Errorf("switch profile: %v", err)
 	}
 
@@ -205,11 +283,15 @@ func switchProfileOnDaemon(ctx context.Context, pm *profilemanager.ProfileManage
 	return nil
 }
 
-func switchProfile(ctx context.Context, profileName string, username string) error {
+// switchProfile asks the daemon to switch to the profile identified by
+// handle (a name, ID, or unique ID prefix). Returns the resolved profile
+// ID so the caller can update the local active-profile state without
+// re-resolving the handle.
+func switchProfile(ctx context.Context, handle string, username string) (profilemanager.ID, error) {
 	conn, err := DialClientGRPCServer(ctx, daemonAddr)
 	if err != nil {
 		//nolint
-		return fmt.Errorf("failed to connect to daemon error: %v\n"+
+		return "", fmt.Errorf("failed to connect to daemon error: %v\n"+
 			"If the daemon is not running please run: "+
 			"\nnetbird service install \nnetbird service start\n", err)
 	}
@@ -217,15 +299,15 @@ func switchProfile(ctx context.Context, profileName string, username string) err
 
 	client := proto.NewDaemonServiceClient(conn)
 
-	_, err = client.SwitchProfile(ctx, &proto.SwitchProfileRequest{
-		ProfileName: &profileName,
+	resp, err := client.SwitchProfile(ctx, &proto.SwitchProfileRequest{
+		ProfileName: &handle,
 		Username:    &username,
 	})
 	if err != nil {
-		return fmt.Errorf("switch profile failed: %v", err)
+		return "", fmt.Errorf("switch profile failed: %w", err)
 	}
 
-	return nil
+	return profilemanager.ID(resp.Id), nil
 }
 
 func doForegroundLogin(ctx context.Context, cmd *cobra.Command, setupKey string, activeProf *profilemanager.Profile) error {
@@ -249,7 +331,7 @@ func doForegroundLogin(ctx context.Context, cmd *cobra.Command, setupKey string,
 		return fmt.Errorf("read config file %s: %v", configFilePath, err)
 	}
 
-	err = foregroundLogin(ctx, cmd, config, setupKey, activeProf.Name)
+	err = foregroundLogin(ctx, cmd, config, setupKey, activeProf.ID)
 	if err != nil {
 		return fmt.Errorf("foreground login failed: %v", err)
 	}
@@ -277,7 +359,7 @@ func handleSSOLogin(ctx context.Context, cmd *cobra.Command, loginResp *proto.Lo
 	return nil
 }
 
-func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *profilemanager.Config, setupKey, profileName string) error {
+func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *profilemanager.Config, setupKey string, profileID profilemanager.ID) error {
 	authClient, err := auth.NewAuth(ctx, config.PrivateKey, config.ManagementURL, config)
 	if err != nil {
 		return fmt.Errorf("failed to create auth client: %v", err)
@@ -291,7 +373,7 @@ func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *profileman
 
 	jwtToken := ""
 	if setupKey == "" && needsLogin {
-		tokenInfo, err := foregroundGetTokenInfo(ctx, cmd, config, profileName)
+		tokenInfo, err := foregroundGetTokenInfo(ctx, cmd, config, profileID)
 		if err != nil {
 			return fmt.Errorf("interactive sso login failed: %v", err)
 		}
@@ -306,10 +388,10 @@ func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *profileman
 	return nil
 }
 
-func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *profilemanager.Config, profileName string) (*auth.TokenInfo, error) {
+func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *profilemanager.Config, profileID profilemanager.ID) (*auth.TokenInfo, error) {
 	hint := ""
 	pm := profilemanager.NewProfileManager()
-	profileState, err := pm.GetProfileState(profileName)
+	profileState, err := pm.GetProfileState(profileID)
 	if err != nil {
 		log.Debugf("failed to get profile state for login hint: %v", err)
 	} else if profileState.Email != "" {

client/cmd/login_test.go

@@ -27,7 +27,7 @@ func TestLogin(t *testing.T) {
 	profilemanager.ActiveProfileStatePath = tempDir + "/active_profile.json"
 	sm := profilemanager.ServiceManager{}
 	err = sm.SetActiveProfileState(&profilemanager.ActiveProfileState{
-		Name:     "default",
+		ID:       "default",
 		Username: currUser.Username,
 	})
 	if err != nil {

client/cmd/profile.go

@@ -2,11 +2,16 @@ package cmd
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os/user"
+	"strings"
+	"text/tabwriter"
 	"time"
 
 	"github.com/spf13/cobra"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
 
 	"github.com/netbirdio/netbird/client/internal"
 	"github.com/netbirdio/netbird/client/internal/profilemanager"
@@ -14,6 +19,8 @@ import (
 	"github.com/netbirdio/netbird/util"
 )
 
+var profileListShowID bool
+
 var profileCmd = &cobra.Command{
 	Use:   "profile",
 	Short: "Manage NetBird client profiles",
@@ -31,27 +38,40 @@ var profileListCmd = &cobra.Command{
 var profileAddCmd = &cobra.Command{
 	Use:   "add <profile_name>",
 	Short: "Add a new profile",
-	Long:  `Add a new profile to the NetBird client. The profile name must be unique.`,
+	Long:  `Add a new profile. Profile name is free-form, a unique ID is generated for the on-disk config file.`,
 	Args:  cobra.ExactArgs(1),
 	RunE:  addProfileFunc,
 }
 
+var profileRenameCmd = &cobra.Command{
+	Use:   "rename <profile> <new_profile_name>",
+	Short: "Renames an existing profile",
+	Long:  `Renames an existing profile (by a name, ID, or unique ID prefix). Profile name is free-form.`,
+	Args:  cobra.ExactArgs(2),
+	RunE:  renameProfileFunc,
+}
+
 var profileRemoveCmd = &cobra.Command{
-	Use:   "remove <profile_name>",
-	Short: "Remove a profile",
-	Long:  `Remove a profile from the NetBird client. The profile must not be inactive.`,
-	Args:  cobra.ExactArgs(1),
-	RunE:  removeProfileFunc,
+	Use:     "remove <profile>",
+	Short:   "Remove a profile",
+	Long:    `Remove a profile by name, ID, or unique ID prefix.`,
+	Aliases: []string{"rm"},
+	Args:    cobra.ExactArgs(1),
+	RunE:    removeProfileFunc,
 }
 
 var profileSelectCmd = &cobra.Command{
-	Use:   "select <profile_name>",
+	Use:   "select <profile>",
 	Short: "Select a profile",
-	Long:  `Make the specified profile active. This will switch the client to use the selected profile's configuration.`,
+	Long:  `Make the specified profile active. Accepts a name, ID, or unique ID prefix.`,
 	Args:  cobra.ExactArgs(1),
 	RunE:  selectProfileFunc,
 }
 
+func init() {
+	profileListCmd.Flags().BoolVar(&profileListShowID, "show-id", false, "show the profile ID column")
+}
+
 func setupCmd(cmd *cobra.Command) error {
 	SetFlagsFromEnvVars(rootCmd)
 	SetFlagsFromEnvVars(cmd)
@@ -65,6 +85,7 @@ func setupCmd(cmd *cobra.Command) error {
 
 	return nil
 }
+
 func listProfilesFunc(cmd *cobra.Command, _ []string) error {
 	if err := setupCmd(cmd); err != nil {
 		return err
@@ -83,25 +104,33 @@ func listProfilesFunc(cmd *cobra.Command, _ []string) error {
 
 	daemonClient := proto.NewDaemonServiceClient(conn)
 
-	profiles, err := daemonClient.ListProfiles(cmd.Context(), &proto.ListProfilesRequest{
+	resp, err := daemonClient.ListProfiles(cmd.Context(), &proto.ListProfilesRequest{
 		Username: currUser.Username,
 	})
 	if err != nil {
 		return err
 	}
 
-	// list profiles, add a tick if the profile is active
-	cmd.Println("Found", len(profiles.Profiles), "profiles:")
-	for _, profile := range profiles.Profiles {
-		// use a cross to indicate the passive profiles
-		activeMarker := "✗"
-		if profile.IsActive {
-			activeMarker = "✓"
-		}
-		cmd.Println(activeMarker, profile.Name)
+	tw := tabwriter.NewWriter(cmd.OutOrStdout(), 0, 0, 2, ' ', 0)
+	if profileListShowID {
+		fmt.Fprintln(tw, "ID\tNAME\tACTIVE")
+	} else {
+		fmt.Fprintln(tw, "NAME\tACTIVE")
 	}
-
-	return nil
+	for _, profile := range resp.Profiles {
+		marker := ""
+		if profile.IsActive {
+			marker = "✓"
+		}
+		name := profilemanager.StripCtrlChars(profile.Name)
+		id := profilemanager.ID(profile.Id)
+		if profileListShowID {
+			fmt.Fprintf(tw, "%s\t%s\t%s\n", id.ShortID(), name, marker)
+		} else {
+			fmt.Fprintf(tw, "%s\t%s\n", name, marker)
+		}
+	}
+	return tw.Flush()
 }
 
 func addProfileFunc(cmd *cobra.Command, args []string) error {
@@ -109,6 +138,41 @@ func addProfileFunc(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
+	currUser, err := user.Current()
+	if err != nil {
+		return fmt.Errorf("get current user: %w", err)
+	}
+
+	conn, err := DialClientGRPCServer(cmd.Context(), daemonAddr)
+	if err != nil {
+		return fmt.Errorf("connect to service CLI interface: %w", err)
+	}
+	defer conn.Close()
+
+	daemonClient := proto.NewDaemonServiceClient(conn)
+	profileName := args[0]
+
+	id, err := addProfileOnDaemon(cmd.Context(), daemonClient, profileName, currUser.Username)
+	if err != nil {
+		return err
+	}
+
+	dupCount, _ := countProfilesWithName(cmd.Context(), daemonClient, currUser.Username, profileName)
+	if dupCount > 1 {
+		cmd.Printf("Warning: %d other profile(s) already use the name %q.\n", dupCount-1, profileName)
+		cmd.Println("Use `netbird profile list --show-id` to disambiguate later.")
+	}
+
+	cmd.Printf("Profile added: %s  %s\n", id.ShortID(), profilemanager.StripCtrlChars(profileName))
+	return nil
+
+}
+
+func renameProfileFunc(cmd *cobra.Command, args []string) error {
+	if err := setupCmd(cmd); err != nil {
+		return err
+	}
+
 	conn, err := DialClientGRPCServer(cmd.Context(), daemonAddr)
 	if err != nil {
 		return fmt.Errorf("connect to service CLI interface: %w", err)
@@ -121,21 +185,43 @@ func addProfileFunc(cmd *cobra.Command, args []string) error {
 	}
 
 	daemonClient := proto.NewDaemonServiceClient(conn)
+	handle := args[0]
+	newProfilename := args[1]
 
-	profileName := args[0]
-
-	_, err = daemonClient.AddProfile(cmd.Context(), &proto.AddProfileRequest{
-		ProfileName: profileName,
-		Username:    currUser.Username,
+	resp, err := daemonClient.RenameProfile(cmd.Context(), &proto.RenameProfileRequest{
+		Handle:         handle,
+		Username:       currUser.Username,
+		NewProfileName: newProfilename,
 	})
 	if err != nil {
-		return err
+		return wrapAmbiguityError(err, handle)
 	}
 
-	cmd.Println("Profile added successfully:", profileName)
+	dupCount, _ := countProfilesWithName(cmd.Context(), daemonClient, currUser.Username, newProfilename)
+	if dupCount > 1 {
+		cmd.Printf("Warning: %d other profile(s) already use the name %q.\n", dupCount-1, newProfilename)
+		cmd.Println("Use `netbird profile list --show-id` to disambiguate later.")
+	}
+
+	cmd.Printf("Profile renamed from %s to %s\n", profilemanager.StripCtrlChars(resp.OldProfileName), profilemanager.StripCtrlChars(newProfilename))
+
 	return nil
 }
 
+func countProfilesWithName(ctx context.Context, c proto.DaemonServiceClient, username, name string) (int, error) {
+	resp, err := c.ListProfiles(ctx, &proto.ListProfilesRequest{Username: username})
+	if err != nil {
+		return 0, err
+	}
+	n := 0
+	for _, p := range resp.Profiles {
+		if p.Name == name {
+			n++
+		}
+	}
+	return n, nil
+}
+
 func removeProfileFunc(cmd *cobra.Command, args []string) error {
 	if err := setupCmd(cmd); err != nil {
 		return err
@@ -153,18 +239,17 @@ func removeProfileFunc(cmd *cobra.Command, args []string) error {
 	}
 
 	daemonClient := proto.NewDaemonServiceClient(conn)
+	handle := args[0]
 
-	profileName := args[0]
-
-	_, err = daemonClient.RemoveProfile(cmd.Context(), &proto.RemoveProfileRequest{
-		ProfileName: profileName,
+	resp, err := daemonClient.RemoveProfile(cmd.Context(), &proto.RemoveProfileRequest{
+		ProfileName: handle,
 		Username:    currUser.Username,
 	})
 	if err != nil {
-		return err
+		return wrapAmbiguityError(err, handle)
 	}
 
-	cmd.Println("Profile removed successfully:", profileName)
+	cmd.Printf("Profile removed: %s\n", resp.Id)
 	return nil
 }
 
@@ -174,7 +259,7 @@ func selectProfileFunc(cmd *cobra.Command, args []string) error {
 	}
 
 	profileManager := profilemanager.NewProfileManager()
-	profileName := args[0]
+	handle := args[0]
 
 	currUser, err := user.Current()
 	if err != nil {
@@ -191,32 +276,15 @@ func selectProfileFunc(cmd *cobra.Command, args []string) error {
 
 	daemonClient := proto.NewDaemonServiceClient(conn)
 
-	profiles, err := daemonClient.ListProfiles(ctx, &proto.ListProfilesRequest{
-		Username: currUser.Username,
+	switchResp, err := daemonClient.SwitchProfile(ctx, &proto.SwitchProfileRequest{
+		ProfileName: &handle,
+		Username:    &currUser.Username,
 	})
 	if err != nil {
-		return fmt.Errorf("list profiles: %w", err)
+		return wrapAmbiguityError(err, handle)
 	}
 
-	var profileExists bool
-
-	for _, profile := range profiles.Profiles {
-		if profile.Name == profileName {
-			profileExists = true
-			break
-		}
-	}
-
-	if !profileExists {
-		return fmt.Errorf("profile %s does not exist", profileName)
-	}
-
-	if err := switchProfile(cmd.Context(), profileName, currUser.Username); err != nil {
-		return err
-	}
-
-	err = profileManager.SwitchProfile(profileName)
-	if err != nil {
+	if err := profileManager.SwitchProfile(profilemanager.ID(switchResp.Id)); err != nil {
 		return err
 	}
 
@@ -231,6 +299,46 @@ func selectProfileFunc(cmd *cobra.Command, args []string) error {
 		}
 	}
 
-	cmd.Println("Profile switched successfully to:", profileName)
+	id := profilemanager.ID(switchResp.Id)
+	cmd.Printf("Profile switched to: %s\n", id.ShortID())
 	return nil
 }
+
+// wrapAmbiguityError turns the daemon's gRPC InvalidArgument errors
+// (which carry the resolver's message verbatim) into CLI-friendly text
+// that points the user at --show-id.
+func wrapAmbiguityError(err error, handle string) error {
+	if err == nil {
+		return nil
+	}
+	st, ok := gstatus.FromError(err)
+	if !ok {
+		return err
+	}
+	switch st.Code() {
+	case codes.InvalidArgument:
+		msg := st.Message()
+		if strings.Contains(msg, "ambiguous") {
+			return errors.New(msg + "\nRun `netbird profile list --show-id` to see IDs, then select by ID prefix:\n  netbird profile select|remove <id-prefix>")
+		}
+	case codes.NotFound:
+		return fmt.Errorf("profile %q not found", handle)
+	}
+	return err
+}
+
+// addProfileOnDaemon issues the AddProfile RPC on an existing daemon client
+// and returns the new profile's ID. It is the single entry point for profile
+// creation, shared by `netbird profile add` and the `netbird up --profile
+// <name>` auto-create path.
+func addProfileOnDaemon(ctx context.Context, client proto.DaemonServiceClient, profileName, username string) (profilemanager.ID, error) {
+	resp, err := client.AddProfile(ctx, &proto.AddProfileRequest{
+		ProfileName: profileName,
+		Username:    username,
+	})
+	if err != nil {
+		return "", fmt.Errorf("add profile failed: %w", err)
+	}
+
+	return profilemanager.ID(resp.Id), nil
+}

client/cmd/root.go

@@ -71,12 +71,14 @@ var (
 	extraIFaceBlackList     []string
 	anonymizeFlag           bool
 	dnsRouteInterval        time.Duration
-	lazyConnEnabled         bool
-	mtu                     uint16
-	profilesDisabled        bool
-	updateSettingsDisabled  bool
-	captureEnabled          bool
-	networksDisabled        bool
+	// lazyConnEnabled is the parse target for the deprecated --enable-lazy-connection
+	// flag. The flag is inert; the value is no longer read (use NB_LAZY_CONN instead).
+	lazyConnEnabled        bool
+	mtu                    uint16
+	profilesDisabled       bool
+	updateSettingsDisabled bool
+	captureEnabled         bool
+	networksDisabled       bool
 
 	rootCmd = &cobra.Command{
 		Use:          "netbird",
@@ -95,7 +97,9 @@ var (
 	}
 )
 
-// Execute executes the root command.
+// Execute runs the appropriate Cobra command for the CLI.
+// If the process is the update binary it delegates to updateCmd; otherwise it runs the root command.
+// It returns any error produced during command execution.
 func Execute() error {
 	if isUpdateBinary() {
 		return updateCmd.Execute()
@@ -103,6 +107,16 @@ func Execute() error {
 	return rootCmd.Execute()
 }
 
+// init initialises package-level defaults and configures the root
+// Cobra command tree. Sets platform-specific config / log directory
+// paths (including legacy Wiretrustee fallbacks) and a default daemon
+// address; registers persistent CLI flags (daemon address,
+// management / admin URLs, logging, setup key (file and inline,
+// mutually exclusive), preshared key, hostname, anonymise, config
+// path); attaches top-level and nested subcommands to the root
+// command; and registers `up`-specific persistent flags (external IP
+// maps, custom DNS resolver address, Rosenpass options, auto-connect
+// disabling, lazy connection).
 func init() {
 	defaultConfigPathDir = "/etc/netbird/"
 	defaultLogFileDir = "/var/log/netbird/"
@@ -168,10 +182,17 @@ func init() {
 	logCmd.AddCommand(logLevelCmd)
 	debugCmd.AddCommand(forCmd)
 	debugCmd.AddCommand(persistenceCmd)
+	debugCmd.AddCommand(debugConfigCmd)
+
+	// kubernetes commands
+	rootCmd.AddCommand(kubernetesCmd)
+	kubernetesCmd.AddCommand(kubernetesListCmd)
+	kubernetesCmd.AddCommand(kubernetesWriteKubeconfigCmd)
 
 	// profile commands
 	profileCmd.AddCommand(profileListCmd)
 	profileCmd.AddCommand(profileAddCmd)
+	profileCmd.AddCommand(profileRenameCmd)
 	profileCmd.AddCommand(profileRemoveCmd)
 	profileCmd.AddCommand(profileSelectCmd)
 
@@ -191,7 +212,8 @@ func init() {
 	upCmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "[Experimental] Enable Rosenpass feature. If enabled, the connection will be post-quantum secured via Rosenpass.")
 	upCmd.PersistentFlags().BoolVar(&rosenpassPermissive, rosenpassPermissiveFlag, false, "[Experimental] Enable Rosenpass in permissive mode to allow this peer to accept WireGuard connections without requiring Rosenpass functionality from peers that do not have Rosenpass enabled.")
 	upCmd.PersistentFlags().BoolVar(&autoConnectDisabled, disableAutoConnectFlag, false, "Disables auto-connect feature. If enabled, then the client won't connect automatically when the service starts.")
-	upCmd.PersistentFlags().BoolVar(&lazyConnEnabled, enableLazyConnectionFlag, false, "[Experimental] Enable the lazy connection feature. If enabled, the client will establish connections on-demand. Note: this setting may be overridden by management configuration.")
+	upCmd.PersistentFlags().BoolVar(&lazyConnEnabled, enableLazyConnectionFlag, false, "Deprecated: no longer used. Lazy connections are controlled by the server and the NB_LAZY_CONN environment variable.")
+	_ = upCmd.PersistentFlags().MarkDeprecated(enableLazyConnectionFlag, "no longer used; lazy connections are controlled by the server and the NB_LAZY_CONN environment variable")
 
 }
 

client/cmd/service.go

@@ -5,6 +5,7 @@ package cmd
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"runtime"
 	"strings"
 	"sync"
@@ -22,15 +23,21 @@ var serviceCmd = &cobra.Command{
 	Short: "Manage the NetBird daemon service",
 }
 
+const defaultJSONSocket = "unix:///var/run/netbird-http.sock"
+
 var (
-	serviceName    string
-	serviceEnvVars []string
+	serviceName      string
+	serviceEnvVars   []string
+	jsonSocket       string
+	enableJSONSocket bool
 )
 
 type program struct {
 	ctx              context.Context
 	cancel           context.CancelFunc
 	serv             *grpc.Server
+	jsonServ         *http.Server
+	jsonServMu       sync.Mutex
 	serverInstance   *server.Server
 	serverInstanceMu sync.Mutex
 }
@@ -46,6 +53,8 @@ func init() {
 	serviceCmd.PersistentFlags().BoolVar(&updateSettingsDisabled, "disable-update-settings", false, "Disables update settings feature. If enabled, the client will not be able to change or edit any settings. To persist this setting, use: netbird service install --disable-update-settings")
 	serviceCmd.PersistentFlags().BoolVar(&captureEnabled, "enable-capture", false, "Enables packet capture via 'netbird debug capture'. To persist, use: netbird service install --enable-capture")
 	serviceCmd.PersistentFlags().BoolVar(&networksDisabled, "disable-networks", false, "Disables network selection. If enabled, the client will not allow listing, selecting, or deselecting networks. To persist, use: netbird service install --disable-networks")
+	serviceCmd.PersistentFlags().BoolVar(&enableJSONSocket, "enable-json-socket", false, "Enables the HTTP/JSON API socket served by grpc-gateway. To persist, use: netbird service install --enable-json-socket")
+	serviceCmd.PersistentFlags().StringVar(&jsonSocket, "json-socket", defaultJSONSocket, "HTTP/JSON API socket address [unix|tcp]://[path|host:port]. Requires --enable-json-socket to serve. To persist, use: netbird service install --enable-json-socket --json-socket")
 
 	rootCmd.PersistentFlags().StringVarP(&serviceName, "service", "s", defaultServiceName, "Netbird system service name")
 	serviceEnvDesc := `Sets extra environment variables for the service. ` +

client/cmd/service_controller.go

@@ -5,9 +5,6 @@ package cmd
 import (
 	"context"
 	"fmt"
-	"net"
-	"os"
-	"strings"
 	"time"
 
 	"github.com/kardianos/service"
@@ -22,41 +19,56 @@ import (
 	"github.com/netbirdio/netbird/util"
 )
 
+func validateJSONSocketFlags() error {
+	if serviceCmd.PersistentFlags().Changed("json-socket") && !enableJSONSocket {
+		return fmt.Errorf("--json-socket requires --enable-json-socket to configure the daemon JSON gateway")
+	}
+	return nil
+}
+
 func (p *program) Start(svc service.Service) error {
 	// Start should not block. Do the actual work async.
 	log.Info("starting NetBird service") //nolint
 
+	if err := validateJSONSocketFlags(); err != nil {
+		return err
+	}
+
 	// Collect static system and platform information
 	system.UpdateStaticInfoAsync()
 
 	// in any case, even if configuration does not exists we run daemon to serve CLI gRPC API.
 	p.serv = grpc.NewServer()
 
-	split := strings.Split(daemonAddr, "://")
-	switch split[0] {
-	case "unix":
-		// cleanup failed close
-		stat, err := os.Stat(split[1])
-		if err == nil && !stat.IsDir() {
-			if err := os.Remove(split[1]); err != nil {
-				log.Debugf("remove socket file: %v", err)
-			}
-		}
-	case "tcp":
-	default:
-		return fmt.Errorf("unsupported daemon address protocol: %v", split[0])
-	}
-
-	listen, err := net.Listen(split[0], split[1])
+	daemonListener, err := listenOnAddress(daemonAddr)
 	if err != nil {
 		return fmt.Errorf("listen daemon interface: %w", err)
 	}
-	go func() {
-		defer listen.Close()
 
-		if split[0] == "unix" {
-			if err := os.Chmod(split[1], 0666); err != nil {
-				log.Errorf("failed setting daemon permissions: %v", split[1])
+	var jsonListener *socketListener
+	if enableJSONSocket {
+		jsonListener, err = listenOnAddress(jsonSocket)
+		if err != nil {
+			_ = daemonListener.Close()
+			return fmt.Errorf("listen daemon JSON interface: %w", err)
+		}
+	} else {
+		removeStaleUnixSocketForAddress(jsonSocket)
+	}
+
+	go func() {
+		defer daemonListener.Close()
+		if jsonListener != nil {
+			defer jsonListener.Close()
+		}
+
+		if err := daemonListener.chmodUnixSocket("daemon"); err != nil {
+			log.Error(err)
+			return
+		}
+		if jsonListener != nil {
+			if err := jsonListener.chmodUnixSocket("daemon JSON"); err != nil {
+				log.Error(err)
 				return
 			}
 		}
@@ -71,8 +83,16 @@ func (p *program) Start(svc service.Service) error {
 		p.serverInstance = serverInstance
 		p.serverInstanceMu.Unlock()
 
-		log.Printf("started daemon server: %v", split[1])
-		if err := p.serv.Serve(listen); err != nil {
+		if jsonListener != nil {
+			if err := p.startJSONGateway(jsonListener, daemonAddr); err != nil {
+				log.Fatalf("failed to start daemon JSON server: %v", err)
+			}
+		} else {
+			log.Debug("daemon JSON socket disabled")
+		}
+
+		log.Printf("started daemon server: %v", daemonListener.address)
+		if err := p.serv.Serve(daemonListener.Listener); err != nil {
 			log.Errorf("failed to serve daemon requests: %v", err)
 		}
 	}()
@@ -92,6 +112,20 @@ func (p *program) Stop(srv service.Service) error {
 
 	p.cancel()
 
+	p.jsonServMu.Lock()
+	jsonServ := p.jsonServ
+	p.jsonServMu.Unlock()
+	if jsonServ != nil {
+		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 2*time.Second)
+		if err := jsonServ.Shutdown(shutdownCtx); err != nil {
+			log.Errorf("failed to stop daemon JSON server gracefully: %v", err)
+			if err := jsonServ.Close(); err != nil {
+				log.Errorf("failed to close daemon JSON server: %v", err)
+			}
+		}
+		shutdownCancel()
+	}
+
 	if p.serv != nil {
 		p.serv.Stop()
 	}
@@ -102,7 +136,7 @@ func (p *program) Stop(srv service.Service) error {
 }
 
 // Common setup for service control commands
-func setupServiceControlCommand(cmd *cobra.Command, ctx context.Context, cancel context.CancelFunc) (service.Service, error) {
+func setupServiceControlCommand(cmd *cobra.Command, ctx context.Context, cancel context.CancelFunc, consoleLog bool) (service.Service, error) {
 	// rootCmd env vars are already applied by PersistentPreRunE.
 	SetFlagsFromEnvVars(serviceCmd)
 
@@ -112,8 +146,14 @@ func setupServiceControlCommand(cmd *cobra.Command, ctx context.Context, cancel
 		return nil, err
 	}
 
-	if err := util.InitLog(logLevel, logFiles...); err != nil {
-		return nil, fmt.Errorf("init log: %w", err)
+	if consoleLog {
+		if err := util.InitLog(logLevel, util.LogConsole); err != nil {
+			return nil, fmt.Errorf("init log: %w", err)
+		}
+	} else {
+		if err := util.InitLog(logLevel, logFiles...); err != nil {
+			return nil, fmt.Errorf("init log: %w", err)
+		}
 	}
 
 	cfg, err := newSVCConfig()
@@ -138,10 +178,13 @@ var runCmd = &cobra.Command{
 		SetupCloseHandler(ctx, cancel)
 		SetupDebugHandler(ctx, nil, nil, nil, util.FindFirstLogPath(logFiles))
 
-		s, err := setupServiceControlCommand(cmd, ctx, cancel)
+		s, err := setupServiceControlCommand(cmd, ctx, cancel, false)
 		if err != nil {
 			return err
 		}
+		if err := validateJSONSocketFlags(); err != nil {
+			return err
+		}
 
 		return s.Run()
 	},
@@ -152,10 +195,13 @@ var startCmd = &cobra.Command{
 	Short: "starts NetBird service",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		ctx, cancel := context.WithCancel(cmd.Context())
-		s, err := setupServiceControlCommand(cmd, ctx, cancel)
+		s, err := setupServiceControlCommand(cmd, ctx, cancel, false)
 		if err != nil {
 			return err
 		}
+		if err := validateJSONSocketFlags(); err != nil {
+			return err
+		}
 
 		if err := s.Start(); err != nil {
 			return fmt.Errorf("start service: %w", err)
@@ -170,7 +216,7 @@ var stopCmd = &cobra.Command{
 	Short: "stops NetBird service",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		ctx, cancel := context.WithCancel(cmd.Context())
-		s, err := setupServiceControlCommand(cmd, ctx, cancel)
+		s, err := setupServiceControlCommand(cmd, ctx, cancel, false)
 		if err != nil {
 			return err
 		}
@@ -188,10 +234,13 @@ var restartCmd = &cobra.Command{
 	Short: "restarts NetBird service",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		ctx, cancel := context.WithCancel(cmd.Context())
-		s, err := setupServiceControlCommand(cmd, ctx, cancel)
+		s, err := setupServiceControlCommand(cmd, ctx, cancel, false)
 		if err != nil {
 			return err
 		}
+		if err := validateJSONSocketFlags(); err != nil {
+			return err
+		}
 
 		if err := s.Restart(); err != nil {
 			return fmt.Errorf("restart service: %w", err)
@@ -206,7 +255,7 @@ var svcStatusCmd = &cobra.Command{
 	Short: "shows NetBird service status",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		ctx, cancel := context.WithCancel(cmd.Context())
-		s, err := setupServiceControlCommand(cmd, ctx, cancel)
+		s, err := setupServiceControlCommand(cmd, ctx, cancel, true)
 		if err != nil {
 			return err
 		}

client/cmd/service_installer.go

@@ -67,6 +67,10 @@ func buildServiceArguments() []string {
 		args = append(args, "--disable-networks")
 	}
 
+	if enableJSONSocket {
+		args = append(args, "--enable-json-socket", "--json-socket", jsonSocket)
+	}
+
 	return args
 }
 
@@ -106,6 +110,10 @@ func configurePlatformSpecificSettings(svcConfig *service.Config) error {
 
 // Create fully configured service config for install/reconfigure
 func createServiceConfigForInstall() (*service.Config, error) {
+	if err := validateJSONSocketFlags(); err != nil {
+		return nil, err
+	}
+
 	svcConfig, err := newSVCConfig()
 	if err != nil {
 		return nil, fmt.Errorf("create service config: %w", err)

client/cmd/service_json_gateway.go

@@ -0,0 +1,52 @@
+//go:build !ios && !android
+
+package cmd
+
+import (
+	"context"
+	"errors"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+func grpcGatewayEndpoint(addr string) string {
+	return strings.TrimPrefix(addr, "tcp://")
+}
+
+func (p *program) startJSONGateway(jsonListener *socketListener, daemonEndpoint string) error {
+	mux := runtime.NewServeMux()
+	opts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
+	if err := proto.RegisterDaemonServiceHandlerFromEndpoint(p.ctx, mux, grpcGatewayEndpoint(daemonEndpoint), opts); err != nil {
+		return err
+	}
+
+	jsonServer := &http.Server{
+		Handler:           mux,
+		ReadHeaderTimeout: 5 * time.Second,
+		BaseContext: func(net.Listener) context.Context {
+			return p.ctx
+		},
+	}
+
+	p.jsonServMu.Lock()
+	p.jsonServ = jsonServer
+	p.jsonServMu.Unlock()
+
+	go func() {
+		log.Printf("started daemon JSON server: %v", jsonListener.address)
+		if err := jsonServer.Serve(jsonListener.Listener); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			log.Errorf("failed to serve daemon JSON requests: %v", err)
+		}
+	}()
+
+	return nil
+}

client/cmd/service_json_socket_test.go

@@ -0,0 +1,176 @@
+//go:build !ios && !android
+
+package cmd
+
+import (
+	"net"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func preserveJSONSocketTestState(t *testing.T) {
+	t.Helper()
+
+	origJSONSocket := jsonSocket
+	origEnableJSONSocket := enableJSONSocket
+	origChanged := map[string]bool{}
+	serviceCmd.PersistentFlags().VisitAll(func(flag *pflag.Flag) {
+		origChanged[flag.Name] = flag.Changed
+	})
+
+	t.Cleanup(func() {
+		jsonSocket = origJSONSocket
+		enableJSONSocket = origEnableJSONSocket
+		serviceCmd.PersistentFlags().VisitAll(func(flag *pflag.Flag) {
+			flag.Changed = origChanged[flag.Name]
+		})
+	})
+}
+
+func TestJSONSocketFlagsArePositiveEnableOnly(t *testing.T) {
+	assert.NotNil(t, serviceCmd.PersistentFlags().Lookup("enable-json-socket"))
+	assert.NotNil(t, serviceCmd.PersistentFlags().Lookup("json-socket"))
+	assert.Nil(t, serviceCmd.PersistentFlags().Lookup("disable-json-socket"))
+	assert.Equal(t, "false", serviceCmd.PersistentFlags().Lookup("enable-json-socket").DefValue)
+}
+
+func TestBuildServiceArgumentsDefaultDisablesJSONSocket(t *testing.T) {
+	preserveJSONSocketTestState(t)
+
+	enableJSONSocket = false
+	jsonSocket = "tcp://127.0.0.1:8080"
+
+	args := buildServiceArguments()
+
+	assert.NotContains(t, args, "--enable-json-socket")
+	assert.NotContains(t, args, "--json-socket")
+}
+
+func TestBuildServiceArgumentsIncludesJSONSocketWhenEnabled(t *testing.T) {
+	preserveJSONSocketTestState(t)
+
+	enableJSONSocket = true
+	jsonSocket = "tcp://127.0.0.1:8080"
+
+	args := buildServiceArguments()
+
+	enableIndex := indexOfArg(args, "--enable-json-socket")
+	jsonIndex := indexOfArg(args, "--json-socket")
+	require.NotEqual(t, -1, enableIndex)
+	require.NotEqual(t, -1, jsonIndex)
+	require.Less(t, enableIndex, jsonIndex)
+	require.Less(t, jsonIndex+1, len(args))
+	assert.Equal(t, "tcp://127.0.0.1:8080", args[jsonIndex+1])
+}
+
+func TestJSONSocketWithoutEnableValidation(t *testing.T) {
+	preserveJSONSocketTestState(t)
+
+	enableJSONSocket = false
+	require.NoError(t, serviceCmd.PersistentFlags().Set("json-socket", "tcp://127.0.0.1:8080"))
+
+	err := validateJSONSocketFlags()
+
+	require.Error(t, err)
+	assert.Contains(t, err.Error(), "--enable-json-socket")
+}
+
+func TestJSONSocketWithEnableValidation(t *testing.T) {
+	preserveJSONSocketTestState(t)
+
+	require.NoError(t, serviceCmd.PersistentFlags().Set("enable-json-socket", "true"))
+	require.NoError(t, serviceCmd.PersistentFlags().Set("json-socket", "tcp://127.0.0.1:8080"))
+
+	assert.NoError(t, validateJSONSocketFlags())
+}
+
+func TestJSONSocketServiceParamsPersistEnableAndAddress(t *testing.T) {
+	preserveJSONSocketTestState(t)
+	serviceCmd.PersistentFlags().VisitAll(func(flag *pflag.Flag) {
+		flag.Changed = false
+	})
+
+	enableJSONSocket = true
+	jsonSocket = "tcp://127.0.0.1:8080"
+
+	params := currentServiceParams()
+	require.True(t, params.EnableJSONSocket)
+	require.Equal(t, "tcp://127.0.0.1:8080", params.JSONSocket)
+
+	enableJSONSocket = false
+	jsonSocket = defaultJSONSocket
+	applyServiceParams(testServiceEnvCommand(), params)
+
+	assert.True(t, enableJSONSocket)
+	assert.Equal(t, "tcp://127.0.0.1:8080", jsonSocket)
+}
+
+func TestRemoveStaleUnixSocketDoesNotRemoveRegularFile(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "netbird-http.sock")
+	require.NoError(t, os.WriteFile(path, []byte("not a socket"), 0600))
+
+	removeStaleUnixSocket(path)
+
+	data, err := os.ReadFile(path)
+	require.NoError(t, err)
+	assert.Equal(t, []byte("not a socket"), data)
+}
+
+func TestRemoveStaleUnixSocketRemovesSocket(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("unix sockets are not available on Windows")
+	}
+
+	path := filepath.Join(t.TempDir(), "netbird-http.sock")
+	addr := &net.UnixAddr{Name: path, Net: "unix"}
+	listener, err := net.ListenUnix("unix", addr)
+	require.NoError(t, err)
+	listener.SetUnlinkOnClose(false)
+	require.NoError(t, listener.Close())
+
+	_, err = os.Lstat(path)
+	require.NoError(t, err, "test setup must leave a stale Unix socket path")
+
+	removeStaleUnixSocket(path)
+
+	_, err = os.Lstat(path)
+	assert.True(t, os.IsNotExist(err), "expected stale Unix socket to be removed, got %v", err)
+}
+
+func TestRemoveStaleUnixSocketDoesNotRemoveLiveSocket(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("unix sockets are not available on Windows")
+	}
+
+	path := filepath.Join(t.TempDir(), "netbird-http.sock")
+	listener, err := net.Listen("unix", path)
+	require.NoError(t, err)
+	defer listener.Close()
+
+	removeStaleUnixSocket(path)
+
+	_, err = os.Lstat(path)
+	assert.NoError(t, err, "expected live Unix socket to be preserved")
+}
+
+func testServiceEnvCommand() *cobra.Command {
+	cmd := &cobra.Command{}
+	cmd.Flags().StringSlice("service-env", nil, "")
+	return cmd
+}
+
+func indexOfArg(args []string, arg string) int {
+	for i, candidate := range args {
+		if candidate == arg {
+			return i
+		}
+	}
+	return -1
+}

client/cmd/service_params.go

@@ -23,6 +23,7 @@ const serviceParamsFile = "service.json"
 type serviceParams struct {
 	LogLevel              string            `json:"log_level"`
 	DaemonAddr            string            `json:"daemon_addr"`
+	JSONSocket            string            `json:"json_socket"`
 	ManagementURL         string            `json:"management_url,omitempty"`
 	ConfigPath            string            `json:"config_path,omitempty"`
 	LogFiles              []string          `json:"log_files,omitempty"`
@@ -30,6 +31,7 @@ type serviceParams struct {
 	DisableUpdateSettings bool              `json:"disable_update_settings,omitempty"`
 	EnableCapture         bool              `json:"enable_capture,omitempty"`
 	DisableNetworks       bool              `json:"disable_networks,omitempty"`
+	EnableJSONSocket      bool              `json:"enable_json_socket,omitempty"`
 	ServiceEnvVars        map[string]string `json:"service_env_vars,omitempty"`
 }
 
@@ -75,6 +77,7 @@ func currentServiceParams() *serviceParams {
 	params := &serviceParams{
 		LogLevel:              logLevel,
 		DaemonAddr:            daemonAddr,
+		JSONSocket:            jsonSocket,
 		ManagementURL:         managementURL,
 		ConfigPath:            configPath,
 		LogFiles:              logFiles,
@@ -82,6 +85,7 @@ func currentServiceParams() *serviceParams {
 		DisableUpdateSettings: updateSettingsDisabled,
 		EnableCapture:         captureEnabled,
 		DisableNetworks:       networksDisabled,
+		EnableJSONSocket:      enableJSONSocket,
 	}
 
 	if len(serviceEnvVars) > 0 {
@@ -113,9 +117,8 @@ func applyServiceParams(cmd *cobra.Command, params *serviceParams) {
 		return
 	}
 
-	// For fields with non-empty defaults (log-level, daemon-addr), keep the
-	// != "" guard so that an older service.json missing the field doesn't
-	// clobber the default with an empty string.
+	// For fields with non-empty defaults, keep the != "" guard so that an older
+	// service.json missing the field doesn't clobber the default with an empty string.
 	if !rootCmd.PersistentFlags().Changed("log-level") && params.LogLevel != "" {
 		logLevel = params.LogLevel
 	}
@@ -124,6 +127,14 @@ func applyServiceParams(cmd *cobra.Command, params *serviceParams) {
 		daemonAddr = params.DaemonAddr
 	}
 
+	if !serviceCmd.PersistentFlags().Changed("json-socket") && params.JSONSocket != "" {
+		jsonSocket = params.JSONSocket
+	}
+
+	if !serviceCmd.PersistentFlags().Changed("enable-json-socket") {
+		enableJSONSocket = params.EnableJSONSocket
+	}
+
 	// For optional fields where empty means "use default", always apply so
 	// that an explicit clear (--management-url "") persists across reinstalls.
 	if !rootCmd.PersistentFlags().Changed("management-url") {

client/cmd/service_params_test.go

@@ -41,6 +41,8 @@ func TestSaveAndLoadServiceParams(t *testing.T) {
 	params := &serviceParams{
 		LogLevel:              "debug",
 		DaemonAddr:            "unix:///var/run/netbird.sock",
+		JSONSocket:            "tcp://127.0.0.1:8080",
+		EnableJSONSocket:      true,
 		ManagementURL:         "https://my.server.com",
 		ConfigPath:            "/etc/netbird/config.json",
 		LogFiles:              []string{"/var/log/netbird/client.log", "console"},
@@ -63,6 +65,8 @@ func TestSaveAndLoadServiceParams(t *testing.T) {
 
 	assert.Equal(t, params.LogLevel, loaded.LogLevel)
 	assert.Equal(t, params.DaemonAddr, loaded.DaemonAddr)
+	assert.Equal(t, params.JSONSocket, loaded.JSONSocket)
+	assert.Equal(t, params.EnableJSONSocket, loaded.EnableJSONSocket)
 	assert.Equal(t, params.ManagementURL, loaded.ManagementURL)
 	assert.Equal(t, params.ConfigPath, loaded.ConfigPath)
 	assert.Equal(t, params.LogFiles, loaded.LogFiles)
@@ -101,6 +105,8 @@ func TestLoadServiceParams_InvalidJSON(t *testing.T) {
 func TestCurrentServiceParams(t *testing.T) {
 	origLogLevel := logLevel
 	origDaemonAddr := daemonAddr
+	origJSONSocket := jsonSocket
+	origEnableJSONSocket := enableJSONSocket
 	origManagementURL := managementURL
 	origConfigPath := configPath
 	origLogFiles := logFiles
@@ -110,6 +116,8 @@ func TestCurrentServiceParams(t *testing.T) {
 	t.Cleanup(func() {
 		logLevel = origLogLevel
 		daemonAddr = origDaemonAddr
+		jsonSocket = origJSONSocket
+		enableJSONSocket = origEnableJSONSocket
 		managementURL = origManagementURL
 		configPath = origConfigPath
 		logFiles = origLogFiles
@@ -120,6 +128,8 @@ func TestCurrentServiceParams(t *testing.T) {
 
 	logLevel = "trace"
 	daemonAddr = "tcp://127.0.0.1:9999"
+	jsonSocket = "tcp://127.0.0.1:8080"
+	enableJSONSocket = true
 	managementURL = "https://mgmt.example.com"
 	configPath = "/tmp/test-config.json"
 	logFiles = []string{"/tmp/test.log"}
@@ -131,6 +141,8 @@ func TestCurrentServiceParams(t *testing.T) {
 
 	assert.Equal(t, "trace", params.LogLevel)
 	assert.Equal(t, "tcp://127.0.0.1:9999", params.DaemonAddr)
+	assert.Equal(t, "tcp://127.0.0.1:8080", params.JSONSocket)
+	assert.True(t, params.EnableJSONSocket)
 	assert.Equal(t, "https://mgmt.example.com", params.ManagementURL)
 	assert.Equal(t, "/tmp/test-config.json", params.ConfigPath)
 	assert.Equal(t, []string{"/tmp/test.log"}, params.LogFiles)
@@ -142,6 +154,8 @@ func TestCurrentServiceParams(t *testing.T) {
 func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 	origLogLevel := logLevel
 	origDaemonAddr := daemonAddr
+	origJSONSocket := jsonSocket
+	origEnableJSONSocket := enableJSONSocket
 	origManagementURL := managementURL
 	origConfigPath := configPath
 	origLogFiles := logFiles
@@ -151,6 +165,8 @@ func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 	t.Cleanup(func() {
 		logLevel = origLogLevel
 		daemonAddr = origDaemonAddr
+		jsonSocket = origJSONSocket
+		enableJSONSocket = origEnableJSONSocket
 		managementURL = origManagementURL
 		configPath = origConfigPath
 		logFiles = origLogFiles
@@ -162,6 +178,8 @@ func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 	// Reset all flags to defaults.
 	logLevel = "info"
 	daemonAddr = "unix:///var/run/netbird.sock"
+	jsonSocket = defaultJSONSocket
+	enableJSONSocket = false
 	managementURL = ""
 	configPath = "/etc/netbird/config.json"
 	logFiles = []string{"/var/log/netbird/client.log"}
@@ -184,6 +202,8 @@ func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 	saved := &serviceParams{
 		LogLevel:              "debug",
 		DaemonAddr:            "tcp://127.0.0.1:5555",
+		JSONSocket:            "tcp://127.0.0.1:8080",
+		EnableJSONSocket:      true,
 		ManagementURL:         "https://saved.example.com",
 		ConfigPath:            "/saved/config.json",
 		LogFiles:              []string{"/saved/client.log"},
@@ -201,6 +221,8 @@ func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 
 	// All other fields were not Changed, so they should use saved values.
 	assert.Equal(t, "tcp://127.0.0.1:5555", daemonAddr)
+	assert.Equal(t, "tcp://127.0.0.1:8080", jsonSocket)
+	assert.True(t, enableJSONSocket)
 	assert.Equal(t, "https://saved.example.com", managementURL)
 	assert.Equal(t, "/saved/config.json", configPath)
 	assert.Equal(t, []string{"/saved/client.log"}, logFiles)
@@ -212,14 +234,17 @@ func TestApplyServiceParams_OnlyUnchangedFlags(t *testing.T) {
 func TestApplyServiceParams_BooleanRevertToFalse(t *testing.T) {
 	origProfilesDisabled := profilesDisabled
 	origUpdateSettingsDisabled := updateSettingsDisabled
+	origEnableJSONSocket := enableJSONSocket
 	t.Cleanup(func() {
 		profilesDisabled = origProfilesDisabled
 		updateSettingsDisabled = origUpdateSettingsDisabled
+		enableJSONSocket = origEnableJSONSocket
 	})
 
 	// Simulate current state where booleans are true (e.g. set by previous install).
 	profilesDisabled = true
 	updateSettingsDisabled = true
+	enableJSONSocket = true
 
 	// Reset Changed state so flags appear unset.
 	serviceCmd.PersistentFlags().VisitAll(func(f *pflag.Flag) {
@@ -238,6 +263,7 @@ func TestApplyServiceParams_BooleanRevertToFalse(t *testing.T) {
 
 	assert.False(t, profilesDisabled, "saved false should override current true")
 	assert.False(t, updateSettingsDisabled, "saved false should override current true")
+	assert.False(t, enableJSONSocket, "saved false should override current true")
 }
 
 func TestApplyServiceParams_ClearManagementURL(t *testing.T) {
@@ -530,6 +556,7 @@ func fieldToGlobalVar(field string) string {
 	m := map[string]string{
 		"LogLevel":              "logLevel",
 		"DaemonAddr":            "daemonAddr",
+		"JSONSocket":            "jsonSocket",
 		"ManagementURL":         "managementURL",
 		"ConfigPath":            "configPath",
 		"LogFiles":              "logFiles",
@@ -537,6 +564,7 @@ func fieldToGlobalVar(field string) string {
 		"DisableUpdateSettings": "updateSettingsDisabled",
 		"EnableCapture":         "captureEnabled",
 		"DisableNetworks":       "networksDisabled",
+		"EnableJSONSocket":      "enableJSONSocket",
 		"ServiceEnvVars":        "serviceEnvVars",
 	}
 	if v, ok := m[field]; ok {

client/cmd/service_privileged_test.go

@@ -0,0 +1,196 @@
+//go:build privileged
+
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"runtime"
+	"testing"
+	"time"
+
+	"github.com/kardianos/service"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+const (
+	serviceStartTimeout = 10 * time.Second
+	serviceStopTimeout  = 5 * time.Second
+	statusPollInterval  = 500 * time.Millisecond
+)
+
+// waitForServiceStatus waits for service to reach expected status with timeout
+func waitForServiceStatus(expectedStatus service.Status, timeout time.Duration) (bool, error) {
+	cfg, err := newSVCConfig()
+	if err != nil {
+		return false, err
+	}
+
+	ctxSvc, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
+	if err != nil {
+		return false, err
+	}
+
+	ctx, timeoutCancel := context.WithTimeout(context.Background(), timeout)
+	defer timeoutCancel()
+
+	ticker := time.NewTicker(statusPollInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return false, fmt.Errorf("timeout waiting for service status %v", expectedStatus)
+		case <-ticker.C:
+			status, err := s.Status()
+			if err != nil {
+				// Continue polling on transient errors
+				continue
+			}
+			if status == expectedStatus {
+				return true, nil
+			}
+		}
+	}
+}
+
+// TestServiceLifecycle tests the complete service lifecycle
+func TestServiceLifecycle(t *testing.T) {
+	// TODO: Add support for Windows and macOS
+	if runtime.GOOS != "linux" && runtime.GOOS != "freebsd" {
+		t.Skipf("Skipping service lifecycle test on unsupported OS: %s", runtime.GOOS)
+	}
+
+	if os.Getenv("CONTAINER") == "true" {
+		t.Skip("Skipping service lifecycle test in container environment")
+	}
+
+	originalServiceName := serviceName
+	serviceName = "netbirdtest" + fmt.Sprintf("%d", time.Now().Unix())
+	defer func() {
+		serviceName = originalServiceName
+	}()
+
+	tempDir := t.TempDir()
+	configPath = fmt.Sprintf("%s/netbird-test-config.json", tempDir)
+	logLevel = "info"
+	daemonAddr = fmt.Sprintf("unix://%s/netbird-test.sock", tempDir)
+
+	// Ensure cleanup even if a subtest fails and Stop/Uninstall subtests don't run.
+	t.Cleanup(func() {
+		cfg, err := newSVCConfig()
+		if err != nil {
+			t.Errorf("cleanup: create service config: %v", err)
+			return
+		}
+		ctxSvc, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
+		if err != nil {
+			t.Errorf("cleanup: create service: %v", err)
+			return
+		}
+
+		// If the subtests already cleaned up, there's nothing to do.
+		if _, err := s.Status(); err != nil {
+			return
+		}
+
+		if err := s.Stop(); err != nil {
+			t.Errorf("cleanup: stop service: %v", err)
+		}
+		if err := s.Uninstall(); err != nil {
+			t.Errorf("cleanup: uninstall service: %v", err)
+		}
+	})
+
+	ctx := context.Background()
+
+	t.Run("Install", func(t *testing.T) {
+		installCmd.SetContext(ctx)
+		err := installCmd.RunE(installCmd, []string{})
+		require.NoError(t, err)
+
+		cfg, err := newSVCConfig()
+		require.NoError(t, err)
+
+		ctxSvc, cancel := context.WithCancel(context.Background())
+		defer cancel()
+
+		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
+		require.NoError(t, err)
+
+		status, err := s.Status()
+		assert.NoError(t, err)
+		assert.NotEqual(t, service.StatusUnknown, status)
+	})
+
+	t.Run("Start", func(t *testing.T) {
+		startCmd.SetContext(ctx)
+		err := startCmd.RunE(startCmd, []string{})
+		require.NoError(t, err)
+
+		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
+		require.NoError(t, err)
+		assert.True(t, running)
+	})
+
+	t.Run("Restart", func(t *testing.T) {
+		restartCmd.SetContext(ctx)
+		err := restartCmd.RunE(restartCmd, []string{})
+		require.NoError(t, err)
+
+		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
+		require.NoError(t, err)
+		assert.True(t, running)
+	})
+
+	t.Run("Reconfigure", func(t *testing.T) {
+		originalLogLevel := logLevel
+		logLevel = "debug"
+		defer func() {
+			logLevel = originalLogLevel
+		}()
+
+		reconfigureCmd.SetContext(ctx)
+		err := reconfigureCmd.RunE(reconfigureCmd, []string{})
+		require.NoError(t, err)
+
+		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
+		require.NoError(t, err)
+		assert.True(t, running)
+	})
+
+	t.Run("Stop", func(t *testing.T) {
+		stopCmd.SetContext(ctx)
+		err := stopCmd.RunE(stopCmd, []string{})
+		require.NoError(t, err)
+
+		stopped, err := waitForServiceStatus(service.StatusStopped, serviceStopTimeout)
+		require.NoError(t, err)
+		assert.True(t, stopped)
+	})
+
+	t.Run("Uninstall", func(t *testing.T) {
+		uninstallCmd.SetContext(ctx)
+		err := uninstallCmd.RunE(uninstallCmd, []string{})
+		require.NoError(t, err)
+
+		cfg, err := newSVCConfig()
+		require.NoError(t, err)
+
+		ctxSvc, cancel := context.WithCancel(context.Background())
+		defer cancel()
+
+		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
+		require.NoError(t, err)
+
+		_, err = s.Status()
+		assert.Error(t, err)
+	})
+}

client/cmd/service_socket.go

@@ -0,0 +1,111 @@
+//go:build !ios && !android
+
+package cmd
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"strings"
+	"syscall"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+)
+
+type socketListener struct {
+	net.Listener
+	network string
+	address string
+}
+
+func listenOnAddress(addr string) (*socketListener, error) {
+	network, address, err := parseListenAddress(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	if network == "unix" {
+		removeStaleUnixSocket(address)
+	}
+
+	listener, err := net.Listen(network, address)
+	if err != nil {
+		return nil, err
+	}
+
+	return &socketListener{Listener: listener, network: network, address: address}, nil
+}
+
+func parseListenAddress(addr string) (string, string, error) {
+	network, address, ok := strings.Cut(addr, "://")
+	if !ok || network == "" || address == "" {
+		return "", "", fmt.Errorf("address must be in [unix|tcp]://[path|host:port] format: %q", addr)
+	}
+
+	switch network {
+	case "unix", "tcp":
+		return network, address, nil
+	default:
+		return "", "", fmt.Errorf("unsupported daemon address protocol: %v", network)
+	}
+}
+
+func removeStaleUnixSocket(path string) {
+	stat, err := os.Lstat(path)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			log.Debugf("stat socket file: %v", err)
+		}
+		return
+	}
+
+	if stat.Mode()&os.ModeSocket == 0 {
+		return
+	}
+
+	if !isStaleUnixSocket(path) {
+		return
+	}
+
+	if err := os.Remove(path); err != nil {
+		log.Debugf("remove socket file: %v", err)
+	}
+}
+
+func isStaleUnixSocket(path string) bool {
+	conn, err := net.DialTimeout("unix", path, 100*time.Millisecond)
+	if err == nil {
+		if closeErr := conn.Close(); closeErr != nil {
+			log.Debugf("close unix socket probe: %v", closeErr)
+		}
+		return false
+	}
+
+	if os.IsNotExist(err) || os.IsPermission(err) || os.IsTimeout(err) {
+		log.Debugf("not removing unix socket %s after probe error: %v", path, err)
+		return false
+	}
+
+	return errors.Is(err, syscall.ECONNREFUSED)
+}
+
+func removeStaleUnixSocketForAddress(addr string) {
+	network, address, err := parseListenAddress(addr)
+	if err != nil || network != "unix" {
+		return
+	}
+	removeStaleUnixSocket(address)
+}
+
+func (l *socketListener) chmodUnixSocket(description string) error {
+	if l == nil || l.network != "unix" {
+		return nil
+	}
+
+	if err := os.Chmod(l.address, 0666); err != nil {
+		return fmt.Errorf("failed setting %s permissions for %s: %w", description, l.address, err)
+	}
+	return nil
+}

client/cmd/service_test.go

@@ -1,16 +1,12 @@
 package cmd
 
 import (
-	"context"
-	"fmt"
 	"os"
 	"os/signal"
 	"runtime"
 	"syscall"
 	"testing"
-	"time"
 
-	"github.com/kardianos/service"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -31,186 +27,6 @@ func TestMain(m *testing.M) {
 	os.Exit(m.Run())
 }
 
-const (
-	serviceStartTimeout = 10 * time.Second
-	serviceStopTimeout  = 5 * time.Second
-	statusPollInterval  = 500 * time.Millisecond
-)
-
-// waitForServiceStatus waits for service to reach expected status with timeout
-func waitForServiceStatus(expectedStatus service.Status, timeout time.Duration) (bool, error) {
-	cfg, err := newSVCConfig()
-	if err != nil {
-		return false, err
-	}
-
-	ctxSvc, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
-	if err != nil {
-		return false, err
-	}
-
-	ctx, timeoutCancel := context.WithTimeout(context.Background(), timeout)
-	defer timeoutCancel()
-
-	ticker := time.NewTicker(statusPollInterval)
-	defer ticker.Stop()
-
-	for {
-		select {
-		case <-ctx.Done():
-			return false, fmt.Errorf("timeout waiting for service status %v", expectedStatus)
-		case <-ticker.C:
-			status, err := s.Status()
-			if err != nil {
-				// Continue polling on transient errors
-				continue
-			}
-			if status == expectedStatus {
-				return true, nil
-			}
-		}
-	}
-}
-
-// TestServiceLifecycle tests the complete service lifecycle
-func TestServiceLifecycle(t *testing.T) {
-	// TODO: Add support for Windows and macOS
-	if runtime.GOOS != "linux" && runtime.GOOS != "freebsd" {
-		t.Skipf("Skipping service lifecycle test on unsupported OS: %s", runtime.GOOS)
-	}
-
-	if os.Getenv("CONTAINER") == "true" {
-		t.Skip("Skipping service lifecycle test in container environment")
-	}
-
-	originalServiceName := serviceName
-	serviceName = "netbirdtest" + fmt.Sprintf("%d", time.Now().Unix())
-	defer func() {
-		serviceName = originalServiceName
-	}()
-
-	tempDir := t.TempDir()
-	configPath = fmt.Sprintf("%s/netbird-test-config.json", tempDir)
-	logLevel = "info"
-	daemonAddr = fmt.Sprintf("unix://%s/netbird-test.sock", tempDir)
-
-	// Ensure cleanup even if a subtest fails and Stop/Uninstall subtests don't run.
-	t.Cleanup(func() {
-		cfg, err := newSVCConfig()
-		if err != nil {
-			t.Errorf("cleanup: create service config: %v", err)
-			return
-		}
-		ctxSvc, cancel := context.WithCancel(context.Background())
-		defer cancel()
-		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
-		if err != nil {
-			t.Errorf("cleanup: create service: %v", err)
-			return
-		}
-
-		// If the subtests already cleaned up, there's nothing to do.
-		if _, err := s.Status(); err != nil {
-			return
-		}
-
-		if err := s.Stop(); err != nil {
-			t.Errorf("cleanup: stop service: %v", err)
-		}
-		if err := s.Uninstall(); err != nil {
-			t.Errorf("cleanup: uninstall service: %v", err)
-		}
-	})
-
-	ctx := context.Background()
-
-	t.Run("Install", func(t *testing.T) {
-		installCmd.SetContext(ctx)
-		err := installCmd.RunE(installCmd, []string{})
-		require.NoError(t, err)
-
-		cfg, err := newSVCConfig()
-		require.NoError(t, err)
-
-		ctxSvc, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
-		require.NoError(t, err)
-
-		status, err := s.Status()
-		assert.NoError(t, err)
-		assert.NotEqual(t, service.StatusUnknown, status)
-	})
-
-	t.Run("Start", func(t *testing.T) {
-		startCmd.SetContext(ctx)
-		err := startCmd.RunE(startCmd, []string{})
-		require.NoError(t, err)
-
-		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
-		require.NoError(t, err)
-		assert.True(t, running)
-	})
-
-	t.Run("Restart", func(t *testing.T) {
-		restartCmd.SetContext(ctx)
-		err := restartCmd.RunE(restartCmd, []string{})
-		require.NoError(t, err)
-
-		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
-		require.NoError(t, err)
-		assert.True(t, running)
-	})
-
-	t.Run("Reconfigure", func(t *testing.T) {
-		originalLogLevel := logLevel
-		logLevel = "debug"
-		defer func() {
-			logLevel = originalLogLevel
-		}()
-
-		reconfigureCmd.SetContext(ctx)
-		err := reconfigureCmd.RunE(reconfigureCmd, []string{})
-		require.NoError(t, err)
-
-		running, err := waitForServiceStatus(service.StatusRunning, serviceStartTimeout)
-		require.NoError(t, err)
-		assert.True(t, running)
-	})
-
-	t.Run("Stop", func(t *testing.T) {
-		stopCmd.SetContext(ctx)
-		err := stopCmd.RunE(stopCmd, []string{})
-		require.NoError(t, err)
-
-		stopped, err := waitForServiceStatus(service.StatusStopped, serviceStopTimeout)
-		require.NoError(t, err)
-		assert.True(t, stopped)
-	})
-
-	t.Run("Uninstall", func(t *testing.T) {
-		uninstallCmd.SetContext(ctx)
-		err := uninstallCmd.RunE(uninstallCmd, []string{})
-		require.NoError(t, err)
-
-		cfg, err := newSVCConfig()
-		require.NoError(t, err)
-
-		ctxSvc, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		s, err := newSVC(newProgram(ctxSvc, cancel), cfg)
-		require.NoError(t, err)
-
-		_, err = s.Status()
-		assert.Error(t, err)
-	})
-}
-
 // TestServiceEnvVars tests environment variable parsing
 func TestServiceEnvVars(t *testing.T) {
 	tests := []struct {

client/cmd/status.go

@@ -6,12 +6,12 @@ import (
 	"net"
 	"net/netip"
 	"strings"
+	"time"
 
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc/status"
 
 	"github.com/netbirdio/netbird/client/internal"
-	"github.com/netbirdio/netbird/client/internal/profilemanager"
 	"github.com/netbirdio/netbird/client/proto"
 	nbstatus "github.com/netbirdio/netbird/client/status"
 	"github.com/netbirdio/netbird/util"
@@ -111,10 +111,14 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
-	pm := profilemanager.NewProfileManager()
-	var profName string
-	if activeProf, err := pm.GetActiveProfile(); err == nil {
-		profName = activeProf.Name
+	// Resolve the active profile's display name via the daemon, which runs
+	// as root and can read the per-user profile files. The local profile
+	// manager only knows the active profile ID, not its display name.
+	profName := getActiveProfileName(ctx)
+
+	var sessionExpiresAt time.Time
+	if ts := resp.GetSessionExpiresAt(); ts.IsValid() {
+		sessionExpiresAt = ts.AsTime().UTC()
 	}
 
 	var outputInformationHolder = nbstatus.ConvertToStatusOutputOverview(resp.GetFullStatus(), nbstatus.ConvertOptions{
@@ -127,6 +131,7 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 		IPsFilter:            ipsFilterMap,
 		ConnectionTypeFilter: connectionTypeFilter,
 		ProfileName:          profName,
+		SessionExpiresAt:     sessionExpiresAt,
 	})
 	var statusOutputString string
 	switch {
@@ -167,6 +172,25 @@ func getStatus(ctx context.Context, fullPeerStatus bool, shouldRunProbes bool) (
 	return resp, nil
 }
 
+// getActiveProfileName asks the daemon for the active profile's display
+// name. The daemon runs as root and can read the per-user profile files to
+// resolve the ID to its human-readable name. Returns an empty string on any
+// error so status output degrades gracefully.
+func getActiveProfileName(ctx context.Context) string {
+	conn, err := DialClientGRPCServer(ctx, daemonAddr)
+	if err != nil {
+		return ""
+	}
+	defer conn.Close()
+
+	resp, err := proto.NewDaemonServiceClient(conn).GetActiveProfile(ctx, &proto.GetActiveProfileRequest{})
+	if err != nil {
+		return ""
+	}
+
+	return resp.GetProfileName()
+}
+
 func parseFilters() error {
 	switch strings.ToLower(statusFilter) {
 	case "", "idle", "connecting", "connected":

client/cmd/testutil_test.go

@@ -11,7 +11,7 @@ import (
 	"go.opentelemetry.io/otel"
 	"google.golang.org/grpc"
 
-	"github.com/netbirdio/management-integrations/integrations"
+	"github.com/netbirdio/netbird/management/server/integrations/integrated_validator/validator"
 
 	nbcache "github.com/netbirdio/netbird/management/server/cache"
 
@@ -109,7 +109,7 @@ func startManagement(t *testing.T, config *config.Config, testFile string) (*grp
 		t.Fatal(err)
 	}
 
-	iv, _ := integrations.NewIntegratedValidator(ctx, peersmanager, settingsManagerMock, eventStore, cacheStore)
+	iv, _ := validator.NewIntegratedValidator(ctx, peersmanager, settingsManagerMock, eventStore, cacheStore)
 
 	metrics, err := telemetry.NewDefaultAppMetrics(ctx)
 	require.NoError(t, err)

client/cmd/up.go

@@ -128,16 +128,9 @@ func upFunc(cmd *cobra.Command, args []string) error {
 	var profileSwitched bool
 	// switch profile if provided
 	if profileName != "" {
-		err = switchProfile(cmd.Context(), profileName, username.Username)
-		if err != nil {
+		if err := switchOrCreateProfile(cmd.Context(), pm, profileName, username.Username); err != nil {
 			return fmt.Errorf("switch profile: %v", err)
 		}
-
-		err = pm.SwitchProfile(profileName)
-		if err != nil {
-			return fmt.Errorf("switch profile: %v", err)
-		}
-
 		profileSwitched = true
 	}
 
@@ -152,6 +145,52 @@ func upFunc(cmd *cobra.Command, args []string) error {
 	return runInDaemonMode(ctx, cmd, pm, activeProf, profileSwitched)
 }
 
+// switchOrCreateProfile switches the active profile to the one identified by
+// handle, creating it first when it does not exist yet. This restores the
+// pre-0.73 behaviour where `netbird up --profile <name>` auto-creates a
+// missing profile instead of failing.
+func switchOrCreateProfile(ctx context.Context, pm *profilemanager.ProfileManager, handle, username string) error {
+	resolvedID, err := switchProfile(ctx, handle, username)
+	if err != nil {
+		st, ok := gstatus.FromError(err)
+		if !ok || st.Code() != codes.NotFound {
+			return err
+		}
+		// Don't fail immediately on a create error: a concurrent run may
+		// have created the profile between the NotFound above and this
+		// call, in which case the retried switch still succeeds. Only
+		// surface the create error if the switch also fails.
+		_, createErr := createProfile(ctx, handle, username)
+		if resolvedID, err = switchProfile(ctx, handle, username); err != nil {
+			if createErr != nil {
+				return fmt.Errorf("create profile: %w", createErr)
+			}
+			return err
+		}
+	}
+
+	if err := pm.SwitchProfile(resolvedID); err != nil {
+		return err
+	}
+	return nil
+}
+
+// createProfile dials the daemon and creates a new profile with the given
+// display name, returning its generated ID. Use addProfileOnDaemon directly
+// when a daemon client is already available to reuse the connection.
+func createProfile(ctx context.Context, profileName, username string) (profilemanager.ID, error) {
+	conn, err := DialClientGRPCServer(ctx, daemonAddr)
+	if err != nil {
+		//nolint
+		return "", fmt.Errorf("failed to connect to daemon error: %v\n"+
+			"If the daemon is not running please run: "+
+			"\nnetbird service install \nnetbird service start\n", err)
+	}
+	defer conn.Close()
+
+	return addProfileOnDaemon(ctx, proto.NewDaemonServiceClient(conn), profileName, username)
+}
+
 func runInForegroundMode(ctx context.Context, cmd *cobra.Command, activeProf *profilemanager.Profile) error {
 	// override the default profile filepath if provided
 	if configPath != "" {
@@ -190,7 +229,7 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command, activeProf *pr
 
 	_, _ = profilemanager.UpdateOldManagementURL(ctx, config, configFilePath)
 
-	err = foregroundLogin(ctx, cmd, config, providedSetupKey, activeProf.Name)
+	err = foregroundLogin(ctx, cmd, config, providedSetupKey, activeProf.ID)
 	if err != nil {
 		return fmt.Errorf("foreground login failed: %v", err)
 	}
@@ -261,10 +300,10 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command, pm *profilemanager
 	}
 
 	// set the new config
-	req := setupSetConfigReq(customDNSAddressConverted, cmd, activeProf.Name, username.Username)
+	req := setupSetConfigReq(customDNSAddressConverted, cmd, activeProf.ID.String(), username.Username)
 	if _, err := client.SetConfig(ctx, req); err != nil {
 		if st, ok := gstatus.FromError(err); ok && st.Code() == codes.Unavailable {
-			log.Warnf("setConfig method is not available in the daemon")
+			log.Warnf("setConfig method is not available in the daemon: %s", st.Message())
 		} else {
 			return fmt.Errorf("call service setConfig method: %v", err)
 		}
@@ -289,10 +328,11 @@ func doDaemonUp(ctx context.Context, cmd *cobra.Command, client proto.DaemonServ
 		return fmt.Errorf("setup login request: %v", err)
 	}
 
-	loginRequest.ProfileName = &activeProf.Name
+	profileID := activeProf.ID.String()
+	loginRequest.ProfileName = &profileID
 	loginRequest.Username = &username
 
-	profileState, err := pm.GetProfileState(activeProf.Name)
+	profileState, err := pm.GetProfileState(activeProf.ID)
 	if err != nil {
 		log.Debugf("failed to get profile state for login hint: %v", err)
 	} else if profileState.Email != "" {
@@ -329,7 +369,7 @@ func doDaemonUp(ctx context.Context, cmd *cobra.Command, client proto.DaemonServ
 	}
 
 	if _, err := client.Up(ctx, &proto.UpRequest{
-		ProfileName: &activeProf.Name,
+		ProfileName: &profileID,
 		Username:    &username,
 	}); err != nil {
 		return fmt.Errorf("call service up method: %v", err)
@@ -439,10 +479,6 @@ func setupSetConfigReq(customDNSAddressConverted []byte, cmd *cobra.Command, pro
 		req.DisableIpv6 = &disableIPv6
 	}
 
-	if cmd.Flag(enableLazyConnectionFlag).Changed {
-		req.LazyConnectionEnabled = &lazyConnEnabled
-	}
-
 	return &req
 }
 
@@ -560,9 +596,6 @@ func setupConfig(customDNSAddressConverted []byte, cmd *cobra.Command, configFil
 		ic.DisableIPv6 = &disableIPv6
 	}
 
-	if cmd.Flag(enableLazyConnectionFlag).Changed {
-		ic.LazyConnectionEnabled = &lazyConnEnabled
-	}
 	return &ic, nil
 }
 
@@ -678,9 +711,6 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte
 		loginRequest.DisableIpv6 = &disableIPv6
 	}
 
-	if cmd.Flag(enableLazyConnectionFlag).Changed {
-		loginRequest.LazyConnectionEnabled = &lazyConnEnabled
-	}
 	return &loginRequest, nil
 }
 

client/cmd/up_daemon_test.go

@@ -29,14 +29,14 @@ func TestUpDaemon(t *testing.T) {
 	}
 
 	sm := profilemanager.ServiceManager{}
-	err = sm.AddProfile("test1", currUser.Username)
+	created, err := sm.AddProfile("test1", currUser.Username)
 	if err != nil {
 		t.Fatalf("failed to add profile: %v", err)
 		return
 	}
 
 	err = sm.SetActiveProfileState(&profilemanager.ActiveProfileState{
-		Name:     "test1",
+		ID:       created.ID,
 		Username: currUser.Username,
 	})
 	if err != nil {

client/cmd/version.go

@@ -12,7 +12,13 @@ var (
 		Short: "Print the NetBird's client application version",
 		Run: func(cmd *cobra.Command, args []string) {
 			cmd.SetOut(cmd.OutOrStdout())
-			cmd.Println(version.NetbirdVersion())
+			out := version.NetbirdVersion()
+			if version.IsDevelopmentVersion(out) {
+				if commit := version.NetbirdCommit(); commit != "" {
+					out += "-" + commit
+				}
+			}
+			cmd.Println(out)
 		},
 	}
 )

client/embed/embed.go

@@ -12,6 +12,7 @@ import (
 	"sync"
 
 	"github.com/sirupsen/logrus"
+	wgdevice "golang.zx2c4.com/wireguard/device"
 	wgnetstack "golang.zx2c4.com/wireguard/tun/netstack"
 
 	"github.com/netbirdio/netbird/client/iface"
@@ -84,6 +85,12 @@ type Options struct {
 	DisableIPv6 bool
 	// BlockInbound blocks all inbound connections from peers
 	BlockInbound bool
+	// BlockLANAccess blocks the embedded peer from reaching the host's
+	// LAN (RFC 1918, link-local, loopback) when it's used as a routing
+	// peer. Mirrors profilemanager.ConfigInput.BlockLANAccess. Useful
+	// when the embedded client must never act as a stepping stone into
+	// the host's local network (e.g. the proxy's overlay peer).
+	BlockLANAccess bool
 	// WireguardPort is the port for the tunnel interface. Use 0 for a random port.
 	WireguardPort *int
 	// MTU is the MTU for the tunnel interface.
@@ -94,6 +101,26 @@ type Options struct {
 	MTU *uint16
 	// DNSLabels defines additional DNS labels configured in the peer.
 	DNSLabels []string
+	// Performance configures the tunnel's buffer pool cap and batch size.
+	Performance Performance
+}
+
+// Performance configures the embedded client's tunnel memory/throughput knobs.
+//
+// These settings are process-global: any non-nil field also becomes the
+// default for Clients constructed by later embed.New calls in the same
+// process. Nil fields are ignored.
+type Performance struct {
+	// PreallocatedBuffersPerPool caps the per-tunnel buffer pool. Zero
+	// leaves the pool unbounded. Lower values trade throughput for a
+	// tighter memory ceiling. May also be changed on a running Client via
+	// Client.SetPerformance, provided this field was nonzero at construction.
+	PreallocatedBuffersPerPool *uint32
+	// MaxBatchSize overrides the number of packets the tunnel reads or
+	// writes per syscall, which also bounds eager buffer allocation per
+	// worker. Zero uses the platform default. Applied at construction
+	// only; ignored by Client.SetPerformance.
+	MaxBatchSize *uint32
 }
 
 // validateCredentials checks that exactly one credential type is provided
@@ -175,6 +202,7 @@ func New(opts Options) (*Client, error) {
 		DisableClientRoutes: &opts.DisableClientRoutes,
 		DisableIPv6:         &opts.DisableIPv6,
 		BlockInbound:        &opts.BlockInbound,
+		BlockLANAccess:      &opts.BlockLANAccess,
 		WireguardPort:       opts.WireguardPort,
 		MTU:                 opts.MTU,
 		DNSLabels:           parsedLabels,
@@ -192,6 +220,13 @@ func New(opts Options) (*Client, error) {
 		config.PrivateKey = opts.PrivateKey
 	}
 
+	if opts.Performance.PreallocatedBuffersPerPool != nil {
+		wgdevice.SetPreallocatedBuffersPerPool(*opts.Performance.PreallocatedBuffersPerPool)
+	}
+	if opts.Performance.MaxBatchSize != nil {
+		wgdevice.SetMaxBatchSizeOverride(*opts.Performance.MaxBatchSize)
+	}
+
 	return &Client{
 		deviceName: opts.DeviceName,
 		setupKey:   opts.SetupKey,
@@ -244,6 +279,12 @@ func (c *Client) Start(startCtx context.Context) error {
 
 	select {
 	case <-startCtx.Done():
+		// ConnectClient.Stop now cancels its own run context and waits for the
+		// run loop to tear the engine down, so this cancel() is no longer
+		// required to break the deadlock and could be removed. It is kept as a
+		// defensive belt-and-suspenders: cancelling the parent context first
+		// guarantees the run loop is unblocked even if Stop's contract regresses.
+		cancel()
 		if stopErr := client.Stop(); stopErr != nil {
 			return fmt.Errorf("stop error after context done. Stop error: %w. Context done: %w", stopErr, startCtx.Err())
 		}
@@ -405,6 +446,21 @@ func (c *Client) Expose(ctx context.Context, req ExposeRequest) (*ExposeSession,
 	}, nil
 }
 
+// IdentityForIP looks up a remote peer by its tunnel IP using the
+// embedded client's status recorder. Returns the peer's WireGuard public
+// key and FQDN. ok=false means the IP doesn't belong to an active peer
+// — offline roster peers are treated as unknown, same as foreign IPs.
+func (c *Client) IdentityForIP(ip netip.Addr) (pubKey, fqdn string, ok bool) {
+	if !ip.IsValid() || c.recorder == nil {
+		return "", "", false
+	}
+	state, found := c.recorder.PeerStateByIP(ip.String())
+	if !found {
+		return "", "", false
+	}
+	return state.PubKey, state.FQDN, true
+}
+
 // Status returns the current status of the client.
 func (c *Client) Status() (peer.FullStatus, error) {
 	c.mu.Lock()
@@ -414,7 +470,7 @@ func (c *Client) Status() (peer.FullStatus, error) {
 	if connect != nil {
 		engine := connect.Engine()
 		if engine != nil {
-			_ = engine.RunHealthProbes(false)
+			_ = engine.RunHealthProbes(context.Background(), false)
 		}
 	}
 
@@ -473,6 +529,25 @@ func (c *Client) VerifySSHHostKey(peerAddress string, key []byte) error {
 	return sshcommon.VerifyHostKey(storedKey, key, peerAddress)
 }
 
+// SetPerformance retunes a running Client. Only PreallocatedBuffersPerPool
+// takes effect, and only when it was nonzero at construction;
+// MaxBatchSize is construction-only and returns an error if set here.
+//
+// Returns ErrClientNotStarted / ErrEngineNotStarted if the Client is not
+// running yet.
+func (c *Client) SetPerformance(t Performance) error {
+	if t.MaxBatchSize != nil {
+		return errors.New("MaxBatchSize is construction-only and cannot be changed at runtime")
+	}
+	engine, err := c.getEngine()
+	if err != nil {
+		return err
+	}
+	return engine.SetPerformance(internal.Performance{
+		PreallocatedBuffersPerPool: t.PreallocatedBuffersPerPool,
+	})
+}
+
 // StartCapture begins capturing packets on this client's tunnel device.
 // Only one capture can be active at a time; starting a new one stops the previous.
 // Call StopCapture (or CaptureSession.Stop) to end it.

client/embed/embed_test.go

@@ -0,0 +1,168 @@
+package embed
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc"
+
+	"github.com/netbirdio/netbird/management/internals/controllers/network_map/controller"
+	"github.com/netbirdio/netbird/management/internals/controllers/network_map/update_channel"
+	"github.com/netbirdio/netbird/management/internals/modules/peers"
+	"github.com/netbirdio/netbird/management/internals/modules/peers/ephemeral/manager"
+	"github.com/netbirdio/netbird/management/internals/server/config"
+	nbgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
+	mgmt "github.com/netbirdio/netbird/management/server"
+	"github.com/netbirdio/netbird/management/server/activity"
+	nbcache "github.com/netbirdio/netbird/management/server/cache"
+	"github.com/netbirdio/netbird/management/server/groups"
+	"github.com/netbirdio/netbird/management/server/integrations/integrated_validator/validator"
+	"github.com/netbirdio/netbird/management/server/integrations/port_forwarding"
+	"github.com/netbirdio/netbird/management/server/job"
+	"github.com/netbirdio/netbird/management/server/permissions"
+	"github.com/netbirdio/netbird/management/server/settings"
+	"github.com/netbirdio/netbird/management/server/store"
+	"github.com/netbirdio/netbird/management/server/telemetry"
+	"github.com/netbirdio/netbird/management/server/types"
+	mgmtProto "github.com/netbirdio/netbird/shared/management/proto"
+	"github.com/netbirdio/netbird/util"
+)
+
+const testSetupKey = "A2C8E62B-38F5-4553-B31E-DD66C696CEBB"
+
+// TestClientStartTimeoutRollback reproduces a deadlock between Engine.Start and
+// Engine.Stop. The signal endpoint accepts gRPC connections but never serves the
+// SignalExchange service, so Engine.Start parks in WaitStreamConnected while
+// holding the engine mutex. When the Start context expires, the rollback path
+// calls ConnectClient.Stop, which must not block forever acquiring that mutex.
+func TestClientStartTimeoutRollback(t *testing.T) {
+	signalAddr := startBlackholeSignal(t)
+	mgmAddr := startManagement(t, signalAddr)
+
+	wgPort := 0
+	client, err := New(Options{
+		DeviceName:    "embed-rollback-test",
+		SetupKey:      testSetupKey,
+		ManagementURL: "http://" + mgmAddr,
+		WireguardPort: &wgPort,
+	})
+	require.NoError(t, err, "embed client creation must succeed")
+
+	startCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	startErr := make(chan error, 1)
+	go func() {
+		startErr <- client.Start(startCtx)
+	}()
+
+	select {
+	case err := <-startErr:
+		require.ErrorIs(t, err, context.DeadlineExceeded)
+	case <-time.After(60 * time.Second):
+		t.Fatal("client.Start did not return after its context expired: Engine.Stop deadlocked against Engine.Start waiting for the signal stream")
+	}
+}
+
+// startBlackholeSignal starts a gRPC server without the SignalExchange service
+// registered. Connections succeed, but the signal stream can never be
+// established, which keeps Engine.Start parked in WaitStreamConnected.
+func startBlackholeSignal(t *testing.T) string {
+	t.Helper()
+
+	lis, err := net.Listen("tcp", "localhost:0")
+	require.NoError(t, err)
+
+	s := grpc.NewServer()
+	go func() {
+		if err := s.Serve(lis); err != nil {
+			t.Error(err)
+		}
+	}()
+	t.Cleanup(s.Stop)
+
+	return lis.Addr().String()
+}
+
+func startManagement(t *testing.T, signalAddr string) string {
+	t.Helper()
+
+	cfg := &config.Config{
+		Stuns:      []*config.Host{},
+		TURNConfig: &config.TURNConfig{},
+		Relay: &config.Relay{
+			Addresses:      []string{"127.0.0.1:1234"},
+			CredentialsTTL: util.Duration{Duration: time.Hour},
+			Secret:         "222222222222222222",
+		},
+		Signal: &config.Host{
+			Proto: "http",
+			URI:   signalAddr,
+		},
+		Datadir:    t.TempDir(),
+		HttpConfig: nil,
+	}
+
+	lis, err := net.Listen("tcp", "localhost:0")
+	require.NoError(t, err)
+
+	s := grpc.NewServer()
+
+	testStore, cleanUp, err := store.NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", cfg.Datadir)
+	require.NoError(t, err)
+	t.Cleanup(cleanUp)
+
+	eventStore := &activity.InMemoryEventStore{}
+
+	permissionsManager := permissions.NewManager(testStore)
+	peersManager := peers.NewManager(testStore, permissionsManager)
+	jobManager := job.NewJobManager(nil, testStore, peersManager)
+
+	cacheStore, err := nbcache.NewStore(context.Background(), 100*time.Millisecond, 300*time.Millisecond, 100)
+	require.NoError(t, err)
+
+	iv, err := validator.NewIntegratedValidator(context.Background(), peersManager, nil, eventStore, cacheStore)
+	require.NoError(t, err)
+	metrics, err := telemetry.NewDefaultAppMetrics(context.Background())
+	require.NoError(t, err)
+
+	ctrl := gomock.NewController(t)
+	t.Cleanup(ctrl.Finish)
+	settingsMockManager := settings.NewMockManager(ctrl)
+	settingsMockManager.EXPECT().
+		GetSettings(gomock.Any(), gomock.Any(), gomock.Any()).
+		Return(&types.Settings{}, nil).
+		AnyTimes()
+	settingsMockManager.EXPECT().
+		GetExtraSettings(gomock.Any(), gomock.Any()).
+		Return(&types.ExtraSettings{}, nil).
+		AnyTimes()
+
+	groupsManager := groups.NewManagerMock()
+
+	updateManager := update_channel.NewPeersUpdateManager(metrics)
+	requestBuffer := mgmt.NewAccountRequestBuffer(context.Background(), testStore)
+	networkMapController := controller.NewController(context.Background(), testStore, metrics, updateManager, requestBuffer, mgmt.MockIntegratedValidator{}, settingsMockManager, "netbird.selfhosted", port_forwarding.NewControllerMock(), manager.NewEphemeralManager(testStore, peersManager), cfg)
+	accountManager, err := mgmt.BuildManager(context.Background(), cfg, testStore, networkMapController, jobManager, nil, "", eventStore, nil, false, iv, metrics, port_forwarding.NewControllerMock(), settingsMockManager, permissionsManager, false, cacheStore)
+	require.NoError(t, err)
+
+	secretsManager, err := nbgrpc.NewTimeBasedAuthSecretsManager(updateManager, cfg.TURNConfig, cfg.Relay, settingsMockManager, groupsManager)
+	require.NoError(t, err)
+
+	mgmtServer, err := nbgrpc.NewServer(cfg, accountManager, settingsMockManager, jobManager, secretsManager, nil, nil, &mgmt.MockIntegratedValidator{}, networkMapController, nil, nil)
+	require.NoError(t, err)
+	mgmtProto.RegisterManagementServiceServer(s, mgmtServer)
+
+	go func() {
+		if err := s.Serve(lis); err != nil {
+			t.Error(err)
+		}
+	}()
+	t.Cleanup(s.Stop)
+
+	return lis.Addr().String()
+}

client/firewall/allower_other.go

@@ -0,0 +1,11 @@
+//go:build android || (!linux && !windows)
+
+package firewall
+
+import "github.com/netbirdio/netbird/client/firewall/uspfilter"
+
+// interfaceAllower returns no allower: these platforms have no host firewall to
+// open for the interface.
+func interfaceAllower(IFaceMapper, uint16) uspfilter.InterfaceAllower {
+	return nil
+}

client/firewall/allower_windows.go

@@ -0,0 +1,10 @@
+//go:build windows
+
+package firewall
+
+import "github.com/netbirdio/netbird/client/firewall/uspfilter"
+
+// interfaceAllower returns the Windows netsh-based interface allower.
+func interfaceAllower(iface IFaceMapper, _ uint16) uspfilter.InterfaceAllower {
+	return uspfilter.NewWindowsInterfaceAllower(iface)
+}

client/firewall/create.go

@@ -6,8 +6,6 @@ import (
 	"fmt"
 	"runtime"
 
-	log "github.com/sirupsen/logrus"
-
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
 	"github.com/netbirdio/netbird/client/firewall/uspfilter"
 	nftypes "github.com/netbirdio/netbird/client/internal/netflow/types"
@@ -21,13 +19,11 @@ func NewFirewall(iface IFaceMapper, _ *statemanager.Manager, flowLogger nftypes.
 	}
 
 	// use userspace packet filtering firewall
-	fm, err := uspfilter.Create(iface, disableServerRoutes, flowLogger, mtu)
-	if err != nil {
-		return nil, err
-	}
-	err = fm.AllowNetbird()
-	if err != nil {
-		log.Warnf("failed to allow netbird interface traffic: %v", err)
-	}
-	return fm, nil
+	return uspfilter.Create(uspfilter.Config{
+		IFace:               iface,
+		DisableServerRoutes: disableServerRoutes,
+		FlowLogger:          flowLogger,
+		MTU:                 mtu,
+		InterfaceAllower:    interfaceAllower(iface, mtu),
+	})
 }

client/firewall/create_linux.go

@@ -16,6 +16,7 @@ import (
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
 	nbnftables "github.com/netbirdio/netbird/client/firewall/nftables"
 	"github.com/netbirdio/netbird/client/firewall/uspfilter"
+	"github.com/netbirdio/netbird/client/iface/netstack"
 	nftypes "github.com/netbirdio/netbird/client/internal/netflow/types"
 	"github.com/netbirdio/netbird/client/internal/statemanager"
 )
@@ -29,47 +30,107 @@ const (
 	NFTABLES
 )
 
-// SKIP_NFTABLES_ENV is the environment variable to skip nftables check
-const SKIP_NFTABLES_ENV = "NB_SKIP_NFTABLES_CHECK"
+// SkipNftablesEnv is the environment variable to skip nftables check
+const SkipNftablesEnv = "NB_SKIP_NFTABLES_CHECK"
+
+// errNoFirewallManager indicates no kernel firewall backend is present,
+// as opposed to a backend that exists but failed to create or initialize.
+var errNoFirewallManager = errors.New("no firewall manager found")
 
 // FWType is the type for the firewall type
 type FWType int
 
 func NewFirewall(iface IFaceMapper, stateManager *statemanager.Manager, flowLogger nftypes.FlowLogger, disableServerRoutes bool, mtu uint16) (firewall.Manager, error) {
-	// We run in userspace mode and force userspace firewall was requested. We don't attempt native firewall.
-	if iface.IsUserspaceBind() && forceUserspaceFirewall() {
-		log.Info("forcing userspace firewall")
-		return createUserspaceFirewall(iface, nil, disableServerRoutes, flowLogger, mtu)
+	// Userspace firewall without a native counterpart: routing is handled
+	// entirely in userspace. The interface is opened in the kernel's foreign
+	// filter chains via a table-less allower, except in netstack mode where no
+	// kernel interface exists.
+	if netstack.IsEnabled() || (iface.IsUserspaceBind() && forceUserspaceFirewall()) {
+		if netstack.IsEnabled() {
+			log.Info("netstack mode, using userspace firewall")
+		} else {
+			log.Info("forcing userspace firewall")
+		}
+		cfg := uspfilter.Config{
+			IFace:               iface,
+			DisableServerRoutes: disableServerRoutes,
+			FlowLogger:          flowLogger,
+			MTU:                 mtu,
+			InterfaceAllower:    interfaceAllower(iface, mtu),
+		}
+
+		return uspfilter.Create(cfg)
 	}
 
 	// Use native firewall for either kernel or userspace, the interface appears identical to netfilter
-	fm, err := createNativeFirewall(iface, stateManager, disableServerRoutes, mtu)
-
-	// Kernel cannot fall back to anything else, need to return error
-	if !iface.IsUserspaceBind() {
-		return fm, err
-	}
-
-	// Fall back to the userspace packet filter if native is unavailable
-	if err != nil {
-		log.Warnf("failed to create native firewall: %v. Proceeding with userspace", err)
-		return createUserspaceFirewall(iface, nil, disableServerRoutes, flowLogger, mtu)
-	}
-
-	// Native firewall handles packet filtering, but the userspace WireGuard bind
-	// needs a device filter for DNS interception hooks. Install a minimal
-	// hooks-only filter that passes all traffic through to the kernel firewall.
-	if err := iface.SetFilter(&uspfilter.HooksFilter{}); err != nil {
-		log.Warnf("failed to set hooks filter, DNS via memory hooks will not work: %v", err)
+	fm, err := createNativeFirewall(iface, stateManager, mtu)
+	switch {
+	case err == nil && !iface.IsUserspaceBind():
+		// Nothing to do, fall through
+	case err == nil && iface.IsUserspaceBind():
+		// Native firewall handles packet filtering, but the userspace WireGuard bind
+		// needs a device filter for DNS interception hooks. Install a minimal
+		// hooks-only filter that passes all traffic through to the kernel firewall.
+		if err := iface.SetFilter(&uspfilter.HooksFilter{}); err != nil {
+			log.Warnf("failed to set hooks filter, DNS via memory hooks will not work: %v", err)
+		}
+	case err != nil && !iface.IsUserspaceBind():
+		// Kernel cannot fall back to anything else, need to return error
+		return nil, err
+	case err != nil && iface.IsUserspaceBind():
+		// Fall back to the userspace packet filter if native is unavailable
+		logNativeFirewallUnavailable(err)
+		return uspfilter.Create(uspfilter.Config{
+			IFace:               iface,
+			DisableServerRoutes: disableServerRoutes,
+			FlowLogger:          flowLogger,
+			MTU:                 mtu,
+			InterfaceAllower:    interfaceAllower(iface, mtu),
+		})
 	}
 
 	return fm, nil
 }
 
-func createNativeFirewall(iface IFaceMapper, stateManager *statemanager.Manager, routes bool, mtu uint16) (firewall.Manager, error) {
+// interfaceAllower selects how the userspace firewall opens the interface in
+// foreign kernel chains: nftables when available (which also opens foreign nft
+// tables), else iptables (the legacy fallback, filter INPUT only), else nil.
+// firewalld trust is applied separately by the manager. Netstack has no kernel
+// interface to open.
+func interfaceAllower(iface IFaceMapper, mtu uint16) uspfilter.InterfaceAllower {
+	if netstack.IsEnabled() {
+		return nil
+	}
+
+	nftAllower, err := nbnftables.NewInterfaceAllower(iface, mtu)
+	if err == nil {
+		return nftAllower
+	}
+	log.Infof("no nftables interface allower: %v", err)
+
+	iptAllower, err := nbiptables.NewInterfaceAllower(iface)
+	if err == nil {
+		return iptAllower
+	}
+	log.Infof("no iptables interface allower: %v", err)
+
+	return nil
+}
+
+// logNativeFirewallUnavailable logs the fallback to userspace at info level
+// when no kernel firewall backend exists, and at warn level otherwise.
+func logNativeFirewallUnavailable(err error) {
+	if errors.Is(err, errNoFirewallManager) {
+		log.Infof("no native firewall backend available: %v. Proceeding with userspace", err)
+	} else {
+		log.Warnf("failed to create native firewall: %v. Proceeding with userspace", err)
+	}
+}
+
+func createNativeFirewall(iface IFaceMapper, stateManager *statemanager.Manager, mtu uint16) (firewall.Manager, error) {
 	fm, err := createFW(iface, mtu)
 	if err != nil {
-		return nil, fmt.Errorf("create firewall: %s", err)
+		return nil, fmt.Errorf("create firewall: %w", err)
 	}
 
 	if err = fm.Init(stateManager); err != nil {
@@ -88,29 +149,10 @@ func createFW(iface IFaceMapper, mtu uint16) (firewall.Manager, error) {
 		log.Info("creating an nftables firewall manager")
 		return nbnftables.Create(iface, mtu)
 	default:
-		log.Info("no firewall manager found, trying to use userspace packet filtering firewall")
-		return nil, errors.New("no firewall manager found")
+		return nil, errNoFirewallManager
 	}
 }
 
-func createUserspaceFirewall(iface IFaceMapper, fm firewall.Manager, disableServerRoutes bool, flowLogger nftypes.FlowLogger, mtu uint16) (firewall.Manager, error) {
-	var errUsp error
-	if fm != nil {
-		fm, errUsp = uspfilter.CreateWithNativeFirewall(iface, fm, disableServerRoutes, flowLogger, mtu)
-	} else {
-		fm, errUsp = uspfilter.Create(iface, disableServerRoutes, flowLogger, mtu)
-	}
-
-	if errUsp != nil {
-		return nil, fmt.Errorf("create userspace firewall: %s", errUsp)
-	}
-
-	if err := fm.AllowNetbird(); err != nil {
-		log.Errorf("failed to allow netbird interface traffic: %v", err)
-	}
-	return fm, nil
-}
-
 // check returns the firewall type based on common lib checks. It returns UNKNOWN if no firewall is found.
 func check() FWType {
 	useIPTABLES := false
@@ -132,35 +174,38 @@ func check() FWType {
 		}
 	}
 
-	nf := nftables.Conn{}
-	if chains, err := nf.ListChains(); err == nil && os.Getenv(SKIP_NFTABLES_ENV) != "true" {
-		if !useIPTABLES {
-			return NFTABLES
-		}
-
-		// search for chains where table is filter
-		// if we find one, we assume that nftables manager can be used with iptables
-		for _, chain := range chains {
-			if chain.Table.Name == "filter" {
+	// Honor the skip env before probing nftables at all.
+	if os.Getenv(SkipNftablesEnv) != "true" {
+		nf := nftables.Conn{}
+		if chains, err := nf.ListChains(); err == nil {
+			if !useIPTABLES {
 				return NFTABLES
 			}
-		}
 
-		// check tables for the following constraints:
-		// 1. there is no chain in nftables for the filter table and there is at least one chain in iptables, we assume that nftables manager can not be used
-		// 2. there is no tables or more than one table, we assume that nftables manager can be used
-		// 3. there is only one table and its name is filter, we assume that nftables manager can not be used, since there was no chain in it
-		// 4. if we find an error we log and continue with iptables check
-		nbTablesList, err := nf.ListTables()
-		switch {
-		case err == nil && len(iptablesChains) > 0:
-			return IPTABLES
-		case err == nil && len(nbTablesList) != 1:
-			return NFTABLES
-		case err == nil && len(nbTablesList) == 1 && nbTablesList[0].Name == "filter":
-			return IPTABLES
-		case err != nil:
-			log.Errorf("failed to list nftables tables on fw manager discovery: %s", err)
+			// search for chains where table is filter
+			// if we find one, we assume that nftables manager can be used with iptables
+			for _, chain := range chains {
+				if chain.Table.Name == "filter" {
+					return NFTABLES
+				}
+			}
+
+			// check tables for the following constraints:
+			// 1. there is no chain in nftables for the filter table and there is at least one chain in iptables, we assume that nftables manager can not be used
+			// 2. there is no tables or more than one table, we assume that nftables manager can be used
+			// 3. there is only one table and its name is filter, we assume that nftables manager can not be used, since there was no chain in it
+			// 4. if we find an error we log and continue with iptables check
+			nbTablesList, err := nf.ListTables()
+			switch {
+			case err == nil && len(iptablesChains) > 0:
+				return IPTABLES
+			case err == nil && len(nbTablesList) != 1:
+				return NFTABLES
+			case err == nil && len(nbTablesList) == 1 && nbTablesList[0].Name == "filter":
+				return IPTABLES
+			case err != nil:
+				log.Errorf("failed to list nftables tables on fw manager discovery: %s", err)
+			}
 		}
 	}
 
@@ -176,15 +221,21 @@ func isIptablesClientAvailable(client *iptables.IPTables) bool {
 	return err == nil
 }
 
+// forceUserspaceFirewall reports whether the userspace firewall is forced.
+// NB_FORCE_USERSPACE_ROUTER is an alias: forcing userspace routing implies the
+// userspace firewall, since the two are no longer separable.
 func forceUserspaceFirewall() bool {
-	val := os.Getenv(EnvForceUserspaceFirewall)
+	return envForceBool(EnvForceUserspaceFirewall) || envForceBool(uspfilter.EnvForceUserspaceRouter)
+}
+
+func envForceBool(name string) bool {
+	val := os.Getenv(name)
 	if val == "" {
 		return false
 	}
-
 	force, err := strconv.ParseBool(val)
 	if err != nil {
-		log.Warnf("failed to parse %s: %v", EnvForceUserspaceFirewall, err)
+		log.Warnf("failed to parse %s: %v", name, err)
 		return false
 	}
 	return force

client/firewall/iptables/acl_linux.go

@@ -1,554 +0,0 @@
-package iptables
-
-import (
-	"errors"
-	"fmt"
-	"net"
-	"slices"
-
-	"github.com/coreos/go-iptables/iptables"
-	"github.com/google/uuid"
-	ipset "github.com/lrh3321/ipset-go"
-	log "github.com/sirupsen/logrus"
-
-	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/client/internal/statemanager"
-	nbnet "github.com/netbirdio/netbird/client/net"
-)
-
-const (
-	tableName = "filter"
-
-	// rules chains contains the effective ACL rules
-	chainNameInputRules = "NETBIRD-ACL-INPUT"
-
-	// mangleFwdKey is the entries map key for mangle FORWARD guard rules that prevent
-	// external DNAT from bypassing ACL rules.
-	mangleFwdKey = "MANGLE-FORWARD"
-)
-
-type aclEntries map[string][][]string
-
-type entry struct {
-	spec     []string
-	position int
-}
-
-type aclManager struct {
-	iptablesClient  *iptables.IPTables
-	wgIface         iFaceMapper
-	entries         aclEntries
-	optionalEntries map[string][]entry
-	ipsetStore      *ipsetStore
-	v6              bool
-
-	stateManager *statemanager.Manager
-}
-
-func newAclManager(iptablesClient *iptables.IPTables, wgIface iFaceMapper) (*aclManager, error) {
-	return &aclManager{
-		iptablesClient:  iptablesClient,
-		wgIface:         wgIface,
-		entries:         make(map[string][][]string),
-		optionalEntries: make(map[string][]entry),
-		ipsetStore:      newIpsetStore(),
-		v6:              iptablesClient.Proto() == iptables.ProtocolIPv6,
-	}, nil
-}
-
-func (m *aclManager) init(stateManager *statemanager.Manager) error {
-	m.stateManager = stateManager
-
-	m.seedInitialEntries()
-	m.seedInitialOptionalEntries()
-
-	if err := m.cleanChains(); err != nil {
-		return fmt.Errorf("clean chains: %w", err)
-	}
-
-	if err := m.createDefaultChains(); err != nil {
-		return fmt.Errorf("create default chains: %w", err)
-	}
-
-	m.updateState()
-
-	return nil
-}
-
-func (m *aclManager) AddPeerFiltering(
-	id []byte,
-	ip net.IP,
-	protocol firewall.Protocol,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	action firewall.Action,
-	ipsetName string,
-) ([]firewall.Rule, error) {
-	chain := chainNameInputRules
-
-	ipsetName = transformIPsetName(ipsetName, sPort, dPort, action)
-	if m.v6 && ipsetName != "" {
-		ipsetName += "-v6"
-	}
-	proto := protoForFamily(protocol, m.v6)
-	specs := filterRuleSpecs(ip, proto, sPort, dPort, action, ipsetName)
-
-	mangleSpecs := slices.Clone(specs)
-	mangleSpecs = append(mangleSpecs,
-		"-i", m.wgIface.Name(),
-		"-m", "addrtype", "--dst-type", "LOCAL",
-		"-j", "MARK", "--set-xmark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected),
-	)
-
-	specs = append(specs, "-j", actionToStr(action))
-	if ipsetName != "" {
-		if ipList, ipsetExists := m.ipsetStore.ipset(ipsetName); ipsetExists {
-			if err := m.addToIPSet(ipsetName, ip); err != nil {
-				return nil, fmt.Errorf("add IP to ipset: %w", err)
-			}
-			// if ruleset already exists it means we already have the firewall rule
-			// so we need to update IPs in the ruleset and return new fw.Rule object for ACL manager.
-			ipList.addIP(ip.String())
-			return []firewall.Rule{&Rule{
-				ruleID:    uuid.New().String(),
-				ipsetName: ipsetName,
-				ip:        ip.String(),
-				chain:     chain,
-				specs:     specs,
-				v6:        m.v6,
-			}}, nil
-		}
-
-		if err := m.flushIPSet(ipsetName); err != nil {
-			if errors.Is(err, ipset.ErrSetNotExist) {
-				log.Debugf("flush ipset %s before use: %v", ipsetName, err)
-			} else {
-				log.Errorf("flush ipset %s before use: %v", ipsetName, err)
-			}
-		}
-		if err := m.createIPSet(ipsetName); err != nil {
-			return nil, fmt.Errorf("create ipset: %w", err)
-		}
-		if err := m.addToIPSet(ipsetName, ip); err != nil {
-			return nil, fmt.Errorf("add IP to ipset: %w", err)
-		}
-
-		ipList := newIpList(ip.String())
-		m.ipsetStore.addIpList(ipsetName, ipList)
-	}
-
-	ok, err := m.iptablesClient.Exists(tableFilter, chain, specs...)
-	if err != nil {
-		return nil, fmt.Errorf("failed to check rule: %w", err)
-	}
-	if ok {
-		return nil, fmt.Errorf("rule already exists")
-	}
-
-	// Insert DROP rules at the beginning, append ACCEPT rules at the end
-	if action == firewall.ActionDrop {
-		// Insert at the beginning of the chain (position 1)
-		err = m.iptablesClient.Insert(tableFilter, chain, 1, specs...)
-	} else {
-		err = m.iptablesClient.Append(tableFilter, chain, specs...)
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	if err := m.iptablesClient.Append(tableMangle, chainRTPRE, mangleSpecs...); err != nil {
-		log.Errorf("failed to add mangle rule: %v", err)
-		mangleSpecs = nil
-	}
-
-	rule := &Rule{
-		ruleID:      uuid.New().String(),
-		specs:       specs,
-		mangleSpecs: mangleSpecs,
-		ipsetName:   ipsetName,
-		ip:          ip.String(),
-		chain:       chain,
-		v6:          m.v6,
-	}
-
-	m.updateState()
-
-	return []firewall.Rule{rule}, nil
-}
-
-// DeletePeerRule from the firewall by rule definition
-func (m *aclManager) DeletePeerRule(rule firewall.Rule) error {
-	r, ok := rule.(*Rule)
-	if !ok {
-		return fmt.Errorf("invalid rule type")
-	}
-
-	shouldDestroyIpset := false
-	if ipsetList, ok := m.ipsetStore.ipset(r.ipsetName); ok {
-		// delete IP from ruleset IPs list and ipset
-		if _, ok := ipsetList.ips[r.ip]; ok {
-			ip := net.ParseIP(r.ip)
-			if ip == nil {
-				return fmt.Errorf("parse IP %s", r.ip)
-			}
-			if err := m.delFromIPSet(r.ipsetName, ip); err != nil {
-				return fmt.Errorf("delete ip from ipset: %w", err)
-			}
-			delete(ipsetList.ips, r.ip)
-		}
-
-		// if after delete, set still contains other IPs,
-		// no need to delete firewall rule and we should exit here
-		if len(ipsetList.ips) != 0 {
-			return nil
-		}
-
-		// we delete last IP from the set, that means we need to delete
-		// set itself and associated firewall rule too
-		m.ipsetStore.deleteIpset(r.ipsetName)
-		shouldDestroyIpset = true
-	}
-
-	if err := m.iptablesClient.Delete(tableName, r.chain, r.specs...); err != nil {
-		return fmt.Errorf("failed to delete rule: %s, %v: %w", r.chain, r.specs, err)
-	}
-
-	if r.mangleSpecs != nil {
-		if err := m.iptablesClient.Delete(tableMangle, chainRTPRE, r.mangleSpecs...); err != nil {
-			log.Errorf("failed to delete mangle rule: %v", err)
-		}
-	}
-
-	if shouldDestroyIpset {
-		if err := m.destroyIPSet(r.ipsetName); err != nil {
-			if errors.Is(err, ipset.ErrBusy) || errors.Is(err, ipset.ErrSetNotExist) {
-				log.Debugf("destroy empty ipset: %v", err)
-			} else {
-				log.Errorf("destroy empty ipset: %v", err)
-			}
-		}
-	}
-
-	m.updateState()
-
-	return nil
-}
-
-func (m *aclManager) Reset() error {
-	if err := m.cleanChains(); err != nil {
-		return fmt.Errorf("clean chains: %w", err)
-	}
-
-	m.updateState()
-
-	return nil
-}
-
-// todo write less destructive cleanup mechanism
-func (m *aclManager) cleanChains() error {
-	ok, err := m.iptablesClient.ChainExists(tableName, chainNameInputRules)
-	if err != nil {
-		log.Debugf("failed to list chains: %s", err)
-		return err
-	}
-	if ok {
-		for _, rule := range m.entries["INPUT"] {
-			err := m.iptablesClient.DeleteIfExists(tableName, "INPUT", rule...)
-			if err != nil {
-				log.Errorf("failed to delete rule: %v, %s", rule, err)
-			}
-		}
-
-		for _, rule := range m.entries["FORWARD"] {
-			err := m.iptablesClient.DeleteIfExists(tableName, "FORWARD", rule...)
-			if err != nil {
-				log.Errorf("failed to delete rule: %v, %s", rule, err)
-			}
-		}
-
-		err = m.iptablesClient.ClearAndDeleteChain(tableName, chainNameInputRules)
-		if err != nil {
-			log.Debugf("failed to clear and delete %s chain: %s", chainNameInputRules, err)
-			return err
-		}
-	}
-
-	ok, err = m.iptablesClient.ChainExists("mangle", "PREROUTING")
-	if err != nil {
-		return fmt.Errorf("list chains: %w", err)
-	}
-	if ok {
-		for _, rule := range m.entries["PREROUTING"] {
-			err := m.iptablesClient.DeleteIfExists("mangle", "PREROUTING", rule...)
-			if err != nil {
-				log.Errorf("failed to delete rule: %v, %s", rule, err)
-			}
-		}
-	}
-
-	for _, rule := range m.entries[mangleFwdKey] {
-		if err := m.iptablesClient.DeleteIfExists(tableMangle, chainFORWARD, rule...); err != nil {
-			log.Errorf("failed to delete mangle FORWARD guard rule: %v, %s", rule, err)
-		}
-	}
-
-	for _, ipsetName := range m.ipsetStore.ipsetNames() {
-		if err := m.flushIPSet(ipsetName); err != nil {
-			if errors.Is(err, ipset.ErrSetNotExist) {
-				log.Debugf("flush ipset %q during reset: %v", ipsetName, err)
-			} else {
-				log.Errorf("flush ipset %q during reset: %v", ipsetName, err)
-			}
-		}
-		if err := m.destroyIPSet(ipsetName); err != nil {
-			if errors.Is(err, ipset.ErrBusy) || errors.Is(err, ipset.ErrSetNotExist) {
-				log.Debugf("destroy ipset %q during reset: %v", ipsetName, err)
-			} else {
-				log.Errorf("destroy ipset %q during reset: %v", ipsetName, err)
-			}
-		}
-		m.ipsetStore.deleteIpset(ipsetName)
-	}
-
-	return nil
-}
-
-func (m *aclManager) createDefaultChains() error {
-	// chain netbird-acl-input-rules
-	if err := m.iptablesClient.NewChain(tableName, chainNameInputRules); err != nil {
-		log.Debugf("failed to create '%s' chain: %s", chainNameInputRules, err)
-		return err
-	}
-
-	for chainName, rules := range m.entries {
-		// mangle FORWARD guard rules are handled separately below
-		if chainName == mangleFwdKey {
-			continue
-		}
-		for _, rule := range rules {
-			if err := m.iptablesClient.InsertUnique(tableName, chainName, 1, rule...); err != nil {
-				log.Debugf("failed to create input chain jump rule: %s", err)
-				return err
-			}
-		}
-	}
-
-	for chainName, entries := range m.optionalEntries {
-		for _, entry := range entries {
-			if err := m.iptablesClient.InsertUnique(tableName, chainName, entry.position, entry.spec...); err != nil {
-				log.Errorf("failed to insert optional entry %v: %v", entry.spec, err)
-				continue
-			}
-			m.entries[chainName] = append(m.entries[chainName], entry.spec)
-		}
-	}
-	clear(m.optionalEntries)
-
-	// Insert mangle FORWARD guard rules to prevent external DNAT bypass.
-	for _, rule := range m.entries[mangleFwdKey] {
-		if err := m.iptablesClient.AppendUnique(tableMangle, chainFORWARD, rule...); err != nil {
-			log.Errorf("failed to add mangle FORWARD guard rule: %v", err)
-		}
-	}
-
-	return nil
-}
-
-// seedInitialEntries adds default rules to the entries map, rules are inserted on pos 1, hence the order is reversed.
-// We want to make sure our traffic is not dropped by existing rules.
-
-// The existing FORWARD rules/policies decide outbound traffic towards our interface.
-// In case the FORWARD policy is set to "drop", we add an established/related rule to allow return traffic for the inbound rule.
-func (m *aclManager) seedInitialEntries() {
-	established := getConntrackEstablished()
-
-	m.appendToEntries("INPUT", []string{"-i", m.wgIface.Name(), "-j", "DROP"})
-	m.appendToEntries("INPUT", []string{"-i", m.wgIface.Name(), "-j", chainNameInputRules})
-	m.appendToEntries("INPUT", append([]string{"-i", m.wgIface.Name()}, established...))
-
-	// Inbound is handled by our ACLs, the rest is dropped.
-	// For outbound we respect the FORWARD policy. However, we need to allow established/related traffic for inbound rules.
-	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", "DROP"})
-
-	m.appendToEntries("FORWARD", []string{"-o", m.wgIface.Name(), "-j", chainRTFWDOUT})
-	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", chainRTFWDIN})
-
-	// Mangle FORWARD guard: when external DNAT redirects traffic from the wg interface, it
-	// traverses FORWARD instead of INPUT, bypassing ACL rules. ACCEPT rules in filter FORWARD
-	// can be inserted above ours. Mangle runs before filter, so these guard rules enforce the
-	// ACL mark check where it cannot be overridden.
-	m.appendToEntries(mangleFwdKey, []string{
-		"-i", m.wgIface.Name(),
-		"-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED",
-		"-j", "ACCEPT",
-	})
-	m.appendToEntries(mangleFwdKey, []string{
-		"-i", m.wgIface.Name(),
-		"-m", "conntrack", "--ctstate", "DNAT",
-		"-m", "mark", "!", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected),
-		"-j", "DROP",
-	})
-}
-
-func (m *aclManager) seedInitialOptionalEntries() {
-	m.optionalEntries["FORWARD"] = []entry{
-		{
-			spec:     []string{"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected), "-j", "ACCEPT"},
-			position: 2,
-		},
-	}
-}
-
-func (m *aclManager) appendToEntries(chainName string, spec []string) {
-	m.entries[chainName] = append(m.entries[chainName], spec)
-}
-
-func (m *aclManager) updateState() {
-	if m.stateManager == nil {
-		return
-	}
-
-	var currentState *ShutdownState
-	if existing := m.stateManager.GetState(currentState); existing != nil {
-		if existingState, ok := existing.(*ShutdownState); ok {
-			currentState = existingState
-		}
-	}
-	if currentState == nil {
-		currentState = &ShutdownState{}
-	}
-
-	currentState.Lock()
-	defer currentState.Unlock()
-
-	if m.v6 {
-		currentState.ACLEntries6 = m.entries
-		currentState.ACLIPsetStore6 = m.ipsetStore
-	} else {
-		currentState.ACLEntries = m.entries
-		currentState.ACLIPsetStore = m.ipsetStore
-	}
-
-	if err := m.stateManager.UpdateState(currentState); err != nil {
-		log.Errorf("failed to update state: %v", err)
-	}
-}
-
-// filterRuleSpecs returns the specs of a filtering rule
-// protoForFamily translates ICMP to ICMPv6 for ip6tables.
-// ip6tables requires "ipv6-icmp" (or "icmpv6") instead of "icmp".
-func protoForFamily(protocol firewall.Protocol, v6 bool) string {
-	if v6 && protocol == firewall.ProtocolICMP {
-		return "ipv6-icmp"
-	}
-	return string(protocol)
-}
-
-func filterRuleSpecs(ip net.IP, protocol string, sPort, dPort *firewall.Port, action firewall.Action, ipsetName string) (specs []string) {
-	// don't use IP matching if IP is 0.0.0.0
-	matchByIP := !ip.IsUnspecified()
-
-	if matchByIP {
-		if ipsetName != "" {
-			specs = append(specs, "-m", "set", "--match-set", ipsetName, "src")
-		} else {
-			specs = append(specs, "-s", ip.String())
-		}
-	}
-	if protocol != "all" {
-		specs = append(specs, "-p", protocol)
-	}
-	specs = append(specs, applyPort("--sport", sPort)...)
-	specs = append(specs, applyPort("--dport", dPort)...)
-	return specs
-}
-
-func actionToStr(action firewall.Action) string {
-	if action == firewall.ActionAccept {
-		return "ACCEPT"
-	}
-	return "DROP"
-}
-
-func transformIPsetName(ipsetName string, sPort, dPort *firewall.Port, action firewall.Action) string {
-	if ipsetName == "" {
-		return ""
-	}
-
-	actionSuffix := ""
-	if action == firewall.ActionDrop {
-		actionSuffix = "-drop"
-	}
-
-	switch {
-	case sPort != nil && dPort != nil:
-		return ipsetName + "-sport-dport" + actionSuffix
-	case sPort != nil:
-		return ipsetName + "-sport" + actionSuffix
-	case dPort != nil:
-		return ipsetName + "-dport" + actionSuffix
-	default:
-		return ipsetName + actionSuffix
-	}
-}
-
-func (m *aclManager) createIPSet(name string) error {
-	opts := ipset.CreateOptions{
-		Replace: true,
-	}
-	if m.v6 {
-		opts.Family = ipset.FamilyIPV6
-	}
-
-	if err := ipset.Create(name, ipset.TypeHashNet, opts); err != nil {
-		return fmt.Errorf("create ipset %s: %w", name, err)
-	}
-
-	log.Debugf("created ipset %s with type hash:net", name)
-	return nil
-}
-
-func (m *aclManager) addToIPSet(name string, ip net.IP) error {
-	cidr := uint8(32)
-	if ip.To4() == nil {
-		cidr = 128
-	}
-
-	entry := &ipset.Entry{
-		IP:      ip,
-		CIDR:    cidr,
-		Replace: true,
-	}
-
-	if err := ipset.Add(name, entry); err != nil {
-		return fmt.Errorf("add IP to ipset %s: %w", name, err)
-	}
-
-	return nil
-}
-
-func (m *aclManager) delFromIPSet(name string, ip net.IP) error {
-	cidr := uint8(32)
-	if ip.To4() == nil {
-		cidr = 128
-	}
-
-	entry := &ipset.Entry{
-		IP:   ip,
-		CIDR: cidr,
-	}
-
-	if err := ipset.Del(name, entry); err != nil {
-		return fmt.Errorf("delete IP from ipset %s: %w", name, err)
-	}
-
-	return nil
-}
-
-func (m *aclManager) flushIPSet(name string) error {
-	return ipset.Flush(name)
-}
-
-func (m *aclManager) destroyIPSet(name string) error {
-	return ipset.Destroy(name)
-}

client/firewall/iptables/chains_linux.go

@@ -0,0 +1,346 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbnet "github.com/netbirdio/netbird/client/net"
+)
+
+func (r *family) createContainers() error {
+	for _, chainInfo := range []struct {
+		chain string
+		table string
+	}{
+		{chainRTFwdIn, tableFilter},
+		{chainRTFwdOut, tableFilter},
+		{chainRTPre, tableMangle},
+		{chainRTNAT, tableNat},
+		{chainRTRdr, tableNat},
+		{chainRTMSSClamp, tableMangle},
+	} {
+		// Fallback: clear chains that survived an unclean shutdown.
+		if ok, _ := r.iptablesClient.ChainExists(chainInfo.table, chainInfo.chain); ok {
+			if err := r.iptablesClient.ClearAndDeleteChain(chainInfo.table, chainInfo.chain); err != nil {
+				log.Warnf("clear stale chain %s in %s: %v", chainInfo.chain, chainInfo.table, err)
+			}
+		}
+		if err := r.iptablesClient.NewChain(chainInfo.table, chainInfo.chain); err != nil {
+			return fmt.Errorf("create chain %s in table %s: %w", chainInfo.chain, chainInfo.table, err)
+		}
+	}
+
+	if err := r.insertEstablishedRule(chainRTFwdIn); err != nil {
+		return fmt.Errorf("insert established rule: %w", err)
+	}
+
+	if err := r.insertEstablishedRule(chainRTFwdOut); err != nil {
+		return fmt.Errorf("insert established rule: %w", err)
+	}
+
+	if err := r.addPostroutingRules(); err != nil {
+		return fmt.Errorf("add static nat rules: %w", err)
+	}
+
+	if err := r.addJumpRules(); err != nil {
+		return fmt.Errorf("add jump rules: %w", err)
+	}
+
+	if err := r.addMSSClampingRules(); err != nil {
+		log.Errorf("failed to add MSS clamping rules: %s", err)
+	}
+
+	return nil
+}
+
+func (r *family) addJumpRules() error {
+	// Jump to nat chain
+	natRule := jumpRuleSpec(chainRTNAT)
+	if err := r.iptablesClient.Insert(tableNat, chainPostrouting, 1, natRule...); err != nil {
+		return fmt.Errorf("add nat postrouting jump rule: %w", err)
+	}
+	r.rules[jumpNATPost] = natRule
+
+	// Jump to mangle prerouting chain
+	preRule := jumpRuleSpec(chainRTPre)
+	if err := r.iptablesClient.Insert(tableMangle, chainPrerouting, 1, preRule...); err != nil {
+		return fmt.Errorf("add mangle prerouting jump rule: %w", err)
+	}
+	r.rules[jumpManglePre] = preRule
+
+	// Jump to nat prerouting chain
+	rdrRule := jumpRuleSpec(chainRTRdr)
+	if err := r.iptablesClient.Insert(tableNat, chainPrerouting, 1, rdrRule...); err != nil {
+		return fmt.Errorf("add nat prerouting jump rule: %w", err)
+	}
+	r.rules[jumpNATPre] = rdrRule
+
+	return nil
+}
+
+func (r *family) setupDataPlaneMark() error {
+	var merr *multierror.Error
+	preRule := []string{
+		"-i", r.wgIface.Name(),
+		"-m", "conntrack", "--ctstate", "NEW",
+		"-j", "CONNMARK", "--set-mark", fmt.Sprintf("%#x", nbnet.DataPlaneMarkIn),
+	}
+
+	if err := r.iptablesClient.AppendUnique(tableMangle, chainPrerouting, preRule...); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("add mangle prerouting rule: %w", err))
+	} else {
+		r.rules[markManglePre] = preRule
+	}
+
+	postRule := []string{
+		"-o", r.wgIface.Name(),
+		"-m", "conntrack", "--ctstate", "NEW",
+		"-j", "CONNMARK", "--set-mark", fmt.Sprintf("%#x", nbnet.DataPlaneMarkOut),
+	}
+
+	if err := r.iptablesClient.AppendUnique(tableMangle, chainPostrouting, postRule...); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("add mangle postrouting rule: %w", err))
+	} else {
+		r.rules[markManglePost] = postRule
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// seedInitialEntries adds default rules to the entries map. Rules are
+// inserted at position 1, so the order here is reversed.
+//
+// Existing FORWARD policy decides outbound traffic towards our
+// interface. If FORWARD policy is "drop", we add an
+// established/related rule to allow return traffic for inbound rules.
+func (r *family) seedInitialEntries() {
+	established := getConntrackEstablished()
+
+	r.appendToEntries(chainInput, []string{"-i", r.wgIface.Name(), "-j", "DROP"})
+	r.appendToEntries(chainInput, []string{"-i", r.wgIface.Name(), "-j", chainACLInput})
+	r.appendToEntries(chainInput, append([]string{"-i", r.wgIface.Name()}, established...))
+
+	r.appendToEntries(chainForward, []string{"-i", r.wgIface.Name(), "-j", "DROP"})
+	r.appendToEntries(chainForward, []string{"-o", r.wgIface.Name(), "-j", chainRTFwdOut})
+	r.appendToEntries(chainForward, []string{"-i", r.wgIface.Name(), "-j", chainRTFwdIn})
+
+	// Mangle FORWARD guard: when external DNAT redirects traffic from
+	// the wg interface, it traverses FORWARD instead of INPUT,
+	// bypassing ACL rules. ACCEPT rules in filter FORWARD can be
+	// inserted above ours. Mangle runs before filter, so these guard
+	// rules enforce the ACL mark check where it cannot be overridden.
+	r.appendToEntries(mangleForwardKey, []string{
+		"-i", r.wgIface.Name(),
+		"-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED",
+		"-j", "ACCEPT",
+	})
+	r.appendToEntries(mangleForwardKey, []string{
+		"-i", r.wgIface.Name(),
+		"-m", "conntrack", "--ctstate", "DNAT",
+		"-m", "mark", "!", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected),
+		"-j", "DROP",
+	})
+}
+
+func (r *family) seedInitialOptionalEntries() {
+	r.optionalEntries[chainForward] = []entry{
+		{
+			spec:     []string{"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected), "-j", "ACCEPT"},
+			position: 2,
+		},
+	}
+}
+
+func (r *family) appendToEntries(chain chainKey, spec ruleSpec) {
+	r.entries[chain] = append(r.entries[chain], spec)
+}
+
+func (r *family) createDefaultChains() error {
+	if err := r.iptablesClient.NewChain(tableFilter, chainACLInput); err != nil {
+		return fmt.Errorf("create %s chain: %w", chainACLInput, err)
+	}
+
+	for chain, rules := range r.entries {
+		// mangle FORWARD guard rules are handled separately below
+		if chain == mangleForwardKey {
+			continue
+		}
+		for _, rule := range rules {
+			if err := r.iptablesClient.InsertUnique(tableFilter, string(chain), 1, rule...); err != nil {
+				return fmt.Errorf("insert jump rule into %s: %w", chain, err)
+			}
+		}
+	}
+
+	for chain, entries := range r.optionalEntries {
+		for _, entry := range entries {
+			if err := r.iptablesClient.InsertUnique(tableFilter, string(chain), entry.position, entry.spec...); err != nil {
+				log.Errorf("failed to insert optional entry %v: %v", entry.spec, err)
+				continue
+			}
+			r.entries[chain] = append(r.entries[chain], entry.spec)
+		}
+	}
+	clear(r.optionalEntries)
+
+	// Insert mangle FORWARD guard rules to prevent external DNAT bypass.
+	for _, rule := range r.entries[mangleForwardKey] {
+		if err := r.iptablesClient.AppendUnique(tableMangle, chainForward, rule...); err != nil {
+			log.Errorf("failed to add mangle FORWARD guard rule: %v", err)
+		}
+	}
+
+	return nil
+}
+
+func (r *family) cleanUpDefaultForwardRules() error {
+	var merr *multierror.Error
+
+	// cleanJumpRules removes the OUTPUT jump to NETBIRD-NAT-OUTPUT among
+	// the others, so the chain below deletes cleanly instead of failing
+	// with "device or resource busy".
+	if err := r.cleanJumpRules(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("clean jump rules: %w", err))
+	}
+
+	for _, chainInfo := range []struct {
+		chain string
+		table string
+	}{
+		{chainRTFwdIn, tableFilter},
+		{chainRTFwdOut, tableFilter},
+		{chainRTPre, tableMangle},
+		{chainRTNAT, tableNat},
+		{chainRTRdr, tableNat},
+		{chainNATOutput, tableNat},
+		{chainRTMSSClamp, tableMangle},
+	} {
+		ok, err := r.iptablesClient.ChainExists(chainInfo.table, chainInfo.chain)
+		if err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("check chain %s in table %s: %w", chainInfo.chain, chainInfo.table, err))
+			continue
+		}
+		if ok {
+			if err := r.iptablesClient.ClearAndDeleteChain(chainInfo.table, chainInfo.chain); err != nil {
+				merr = multierror.Append(merr, fmt.Errorf("clear and delete chain %s in table %s: %w", chainInfo.chain, chainInfo.table, err))
+			}
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) cleanJumpRules() error {
+	// locations maps each jump rule to the built-in table and chain it
+	// was inserted into, plus the netbird chain it targets.
+	locations := map[firewall.RuleID]struct{ table, chain, target string }{
+		jumpNATPost:   {tableNat, chainPostrouting, chainRTNAT},
+		jumpManglePre: {tableMangle, chainPrerouting, chainRTPre},
+		jumpNATPre:    {tableNat, chainPrerouting, chainRTRdr},
+		jumpMSSClamp:  {tableMangle, chainForward, chainRTMSSClamp},
+		jumpNATOutput: {tableNat, chainOutput, chainNATOutput},
+	}
+
+	var merr *multierror.Error
+	for ruleID, loc := range locations {
+		rule, exists := r.rules[ruleID]
+		if !exists {
+			// Untracked (e.g. fresh start after an unclean shutdown with no
+			// restored state): if the target chain survived, remove the stale
+			// jump to it so the chain can be deleted.
+			ok, err := r.iptablesClient.ChainExists(loc.table, loc.target)
+			if err != nil {
+				merr = multierror.Append(merr, fmt.Errorf("check chain %s in table %s: %w", loc.target, loc.table, err))
+				continue
+			}
+			if !ok {
+				continue
+			}
+			rule = jumpRuleSpec(loc.target)
+		}
+		if err := r.iptablesClient.DeleteIfExists(loc.table, loc.chain, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete rule from chain %s in table %s: %w", loc.chain, loc.table, err))
+			continue
+		}
+		delete(r.rules, ruleID)
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// jumpRuleSpec builds the iptables rule spec that jumps to target. Create
+// and cleanup sites share it so the installed and deleted specs cannot drift.
+func jumpRuleSpec(target string) []string {
+	return []string{"-j", target}
+}
+
+func (r *family) cleanAclChains() error {
+	var merr *multierror.Error
+
+	if err := r.cleanInputAclChain(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	for _, rule := range r.entries[mangleForwardKey] {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainForward, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete mangle %s guard rule %v: %w", chainForward, rule, err))
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) cleanInputAclChain() error {
+	ok, err := r.iptablesClient.ChainExists(tableFilter, chainACLInput)
+	if err != nil {
+		return fmt.Errorf("check chain %s: %w", chainACLInput, err)
+	}
+	if !ok {
+		return nil
+	}
+
+	var merr *multierror.Error
+	for _, rule := range r.entries[chainInput] {
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainInput, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete %s rule %v: %w", chainInput, rule, err))
+		}
+	}
+
+	for _, rule := range r.entries[chainForward] {
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainForward, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete %s rule %v: %w", chainForward, rule, err))
+		}
+	}
+
+	if err := r.iptablesClient.ClearAndDeleteChain(tableFilter, chainACLInput); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("clear and delete %s chain: %w", chainACLInput, err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) cleanupDataPlaneMark() error {
+	var merr *multierror.Error
+	if preRule, exists := r.rules[markManglePre]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainPrerouting, preRule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove mangle prerouting rule: %w", err))
+		} else {
+			delete(r.rules, markManglePre)
+		}
+	}
+
+	if postRule, exists := r.rules[markManglePost]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainPostrouting, postRule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove mangle postrouting rule: %w", err))
+		} else {
+			delete(r.rules, markManglePost)
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}

client/firewall/iptables/dnat_linux.go

@@ -0,0 +1,285 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+	"net/netip"
+	"strconv"
+	"strings"
+
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+)
+
+func (r *family) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error) {
+	ruleID := rule.ID()
+	if _, exists := r.rules[ruleID+dnatSuffix]; exists {
+		return rule, nil
+	}
+
+	toDestination := rule.TranslatedAddress.String()
+	switch {
+	case len(rule.TranslatedPort.Values) == 0:
+		// no translated port, use original port
+	case len(rule.TranslatedPort.Values) == 1:
+		toDestination += fmt.Sprintf(":%d", rule.TranslatedPort.Values[0])
+	case rule.TranslatedPort.IsRange && len(rule.TranslatedPort.Values) == 2:
+		// need the "/originalport" suffix to avoid dnat port randomization
+		toDestination += fmt.Sprintf(":%d-%d/%d", rule.TranslatedPort.Values[0], rule.TranslatedPort.Values[1], rule.DestinationPort.Values[0])
+	default:
+		return nil, fmt.Errorf("invalid translated port: %v", rule.TranslatedPort)
+	}
+
+	proto := strings.ToLower(string(rule.Protocol))
+
+	rules := make(map[firewall.RuleID]ruleInfo, 3)
+
+	// DNAT rule
+	dnatRule := []string{
+		"!", "-i", r.wgIface.Name(),
+		"-p", proto,
+		"-j", "DNAT",
+		"--to-destination", toDestination,
+	}
+	dnatRule = append(dnatRule, applyPort("--dport", &rule.DestinationPort)...)
+	rules[ruleID+dnatSuffix] = ruleInfo{
+		table: tableNat,
+		chain: chainRTRdr,
+		rule:  dnatRule,
+	}
+
+	// SNAT rule
+	snatRule := []string{
+		"-o", r.wgIface.Name(),
+		"-p", proto,
+		"-d", rule.TranslatedAddress.String(),
+		"-j", "MASQUERADE",
+	}
+	snatRule = append(snatRule, applyPort("--dport", &rule.TranslatedPort)...)
+	rules[ruleID+snatSuffix] = ruleInfo{
+		table: tableNat,
+		chain: chainRTNAT,
+		rule:  snatRule,
+	}
+
+	// Forward filtering rule, if fwd policy is DROP
+	forwardRule := []string{
+		"-o", r.wgIface.Name(),
+		"-p", proto,
+		"-d", rule.TranslatedAddress.String(),
+		"-j", "ACCEPT",
+	}
+	forwardRule = append(forwardRule, applyPort("--dport", &rule.TranslatedPort)...)
+	rules[ruleID+fwdSuffix] = ruleInfo{
+		table: tableFilter,
+		chain: chainRTFwdOut,
+		rule:  forwardRule,
+	}
+
+	// Request forwarding once the rule is about to be installed, releasing
+	// it if installation fails so the refcount tracks the real rules.
+	if err := r.ipFwdState.RequestForwarding(); err != nil {
+		return nil, err
+	}
+
+	for key, ruleInfo := range rules {
+		if err := r.iptablesClient.Append(ruleInfo.table, ruleInfo.chain, ruleInfo.rule...); err != nil {
+			if rollbackErr := r.rollbackRules(rules); rollbackErr != nil {
+				log.Errorf("rollback failed: %v", rollbackErr)
+			}
+			r.releaseForwarding()
+			return nil, fmt.Errorf("add rule %s: %w", key, err)
+		}
+		r.rules[key] = ruleInfo.rule
+	}
+
+	r.updateState()
+	return rule, nil
+}
+
+func (r *family) rollbackRules(rules map[firewall.RuleID]ruleInfo) error {
+	var merr *multierror.Error
+	for key, ruleInfo := range rules {
+		if err := r.iptablesClient.DeleteIfExists(ruleInfo.table, ruleInfo.chain, ruleInfo.rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("rollback rule %s: %w", key, err))
+			// On rollback error, add to rules map for next cleanup
+			r.rules[key] = ruleInfo.rule
+		}
+	}
+	if merr != nil {
+		r.updateState()
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) DeleteDNATRule(rule firewall.Rule) error {
+	ruleID := rule.ID()
+
+	var merr *multierror.Error
+	var found bool
+	if dnatRule, exists := r.rules[ruleID+dnatSuffix]; exists {
+		found = true
+		if err := r.iptablesClient.Delete(tableNat, chainRTRdr, dnatRule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete DNAT rule: %w", err))
+		}
+		delete(r.rules, ruleID+dnatSuffix)
+	}
+
+	if snatRule, exists := r.rules[ruleID+snatSuffix]; exists {
+		found = true
+		if err := r.iptablesClient.Delete(tableNat, chainRTNAT, snatRule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete SNAT rule: %w", err))
+		}
+		delete(r.rules, ruleID+snatSuffix)
+	}
+
+	if fwdRule, exists := r.rules[ruleID+fwdSuffix]; exists {
+		found = true
+		if err := r.iptablesClient.Delete(tableFilter, chainRTFwdOut, fwdRule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete forward rule: %w", err))
+		}
+		delete(r.rules, ruleID+fwdSuffix)
+	}
+
+	r.updateState()
+
+	// Release once, only if the rule was present and removed.
+	if merr == nil && found {
+		r.releaseForwarding()
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// releaseForwarding drops one IP forwarding reference, logging any error.
+func (r *family) releaseForwarding() {
+	if err := r.ipFwdState.ReleaseForwarding(); err != nil {
+		log.Errorf("release IP forwarding: %v", err)
+	}
+}
+
+func (r *family) AddInboundDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("inbound-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if _, exists := r.rules[ruleID]; exists {
+		return nil
+	}
+
+	dnatRule := []string{
+		"-i", r.wgIface.Name(),
+		"-p", strings.ToLower(protoForFamily(protocol, r.v6)),
+		"--dport", strconv.Itoa(int(originalPort)),
+		"-d", localAddr.String(),
+		"-m", "addrtype", "--dst-type", "LOCAL",
+		"-j", "DNAT",
+		"--to-destination", ":" + strconv.Itoa(int(translatedPort)),
+	}
+
+	info := ruleInfo{
+		table: tableNat,
+		chain: chainRTRdr,
+		rule:  dnatRule,
+	}
+
+	if err := r.iptablesClient.Append(info.table, info.chain, info.rule...); err != nil {
+		return fmt.Errorf("add inbound DNAT rule: %w", err)
+	}
+	r.rules[ruleID] = info.rule
+
+	r.updateState()
+	return nil
+}
+
+// RemoveInboundDNAT removes an inbound DNAT rule.
+func (r *family) RemoveInboundDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("inbound-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if dnatRule, exists := r.rules[ruleID]; exists {
+		if err := r.iptablesClient.Delete(tableNat, chainRTRdr, dnatRule...); err != nil {
+			return fmt.Errorf("delete inbound DNAT rule: %w", err)
+		}
+		delete(r.rules, ruleID)
+	}
+
+	r.updateState()
+	return nil
+}
+
+// ensureNATOutputChain lazily creates the OUTPUT NAT chain and jump rule on first use.
+func (r *family) ensureNATOutputChain() error {
+	if _, exists := r.rules[jumpNATOutput]; exists {
+		return nil
+	}
+
+	chainExists, err := r.iptablesClient.ChainExists(tableNat, chainNATOutput)
+	if err != nil {
+		return fmt.Errorf("check chain %s: %w", chainNATOutput, err)
+	}
+	if !chainExists {
+		if err := r.iptablesClient.NewChain(tableNat, chainNATOutput); err != nil {
+			return fmt.Errorf("create chain %s: %w", chainNATOutput, err)
+		}
+	}
+
+	jumpRule := jumpRuleSpec(chainNATOutput)
+	if err := r.iptablesClient.Insert(tableNat, chainOutput, 1, jumpRule...); err != nil {
+		if !chainExists {
+			if delErr := r.iptablesClient.ClearAndDeleteChain(tableNat, chainNATOutput); delErr != nil {
+				log.Warnf("failed to rollback chain %s: %v", chainNATOutput, delErr)
+			}
+		}
+		return fmt.Errorf("add OUTPUT jump rule: %w", err)
+	}
+	r.rules[jumpNATOutput] = jumpRule
+
+	r.updateState()
+	return nil
+}
+
+// AddOutputDNAT adds an OUTPUT chain DNAT rule for locally-generated traffic.
+func (r *family) AddOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("output-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if _, exists := r.rules[ruleID]; exists {
+		return nil
+	}
+
+	if err := r.ensureNATOutputChain(); err != nil {
+		return err
+	}
+
+	dnatRule := []string{
+		"-p", strings.ToLower(protoForFamily(protocol, localAddr.Is6())),
+		"--dport", strconv.Itoa(int(originalPort)),
+		"-d", localAddr.String(),
+		"-j", "DNAT",
+		"--to-destination", ":" + strconv.Itoa(int(translatedPort)),
+	}
+
+	if err := r.iptablesClient.Append(tableNat, chainNATOutput, dnatRule...); err != nil {
+		return fmt.Errorf("add output DNAT rule: %w", err)
+	}
+	r.rules[ruleID] = dnatRule
+
+	r.updateState()
+	return nil
+}
+
+// RemoveOutputDNAT removes an OUTPUT chain DNAT rule.
+func (r *family) RemoveOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("output-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if dnatRule, exists := r.rules[ruleID]; exists {
+		if err := r.iptablesClient.Delete(tableNat, chainNATOutput, dnatRule...); err != nil {
+			return fmt.Errorf("delete output DNAT rule: %w", err)
+		}
+		delete(r.rules, ruleID)
+	}
+
+	r.updateState()
+	return nil
+}

client/firewall/iptables/family_linux.go

@@ -0,0 +1,252 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+	"maps"
+	"net/netip"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbid "github.com/netbirdio/netbird/client/internal/acl/id"
+	"github.com/netbirdio/netbird/client/internal/routemanager/ipfwdstate"
+	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
+	"github.com/netbirdio/netbird/client/internal/statemanager"
+)
+
+// constants needed to manage and create iptable rules
+const (
+	tableFilter = "filter"
+	tableNat    = "nat"
+	tableMangle = "mangle"
+
+	// chainACLInput is the peer ACL chain that holds installed
+	// peer-filtering rules.
+	chainACLInput = "NETBIRD-ACL-INPUT"
+
+	// mangleForwardKey is the entries map key for mangle FORWARD guard
+	// rules that prevent external DNAT from bypassing ACL rules.
+	mangleForwardKey chainKey = "MANGLE-FORWARD"
+
+	chainInput       = "INPUT"
+	chainPostrouting = "POSTROUTING"
+	chainPrerouting  = "PREROUTING"
+	chainForward     = "FORWARD"
+	chainRTNAT       = "NETBIRD-RT-NAT"
+	chainRTFwdIn     = "NETBIRD-RT-FWD-IN"
+	chainRTFwdOut    = "NETBIRD-RT-FWD-OUT"
+	chainRTPre       = "NETBIRD-RT-PRE"
+	chainRTRdr       = "NETBIRD-RT-RDR"
+	chainNATOutput   = "NETBIRD-NAT-OUTPUT"
+	chainRTMSSClamp  = "NETBIRD-RT-MSSCLAMP"
+
+	jumpManglePre  = "jump-mangle-pre"
+	jumpNATPre     = "jump-nat-pre"
+	jumpNATPost    = "jump-nat-post"
+	jumpNATOutput  = "jump-nat-output"
+	jumpMSSClamp   = "jump-mss-clamp"
+	markManglePre  = "mark-mangle-pre"
+	markManglePost = "mark-mangle-post"
+	matchSet       = "--match-set"
+
+	dnatSuffix firewall.RuleID = "_dnat"
+	snatSuffix firewall.RuleID = "_snat"
+	fwdSuffix  firewall.RuleID = "_fwd"
+
+	// ipv4TCPHeaderSize is the minimum IPv4 (20) + TCP (20) header size for MSS calculation.
+	ipv4TCPHeaderSize = 40
+	// ipv6TCPHeaderSize is the minimum IPv6 (40) + TCP (20) header size for MSS calculation.
+	ipv6TCPHeaderSize = 60
+)
+
+type ruleInfo struct {
+	chain string
+	table string
+	rule  []string
+}
+
+type routeRules map[firewall.RuleID][]string
+
+// ruleSpec is a single iptables rule expressed as its argument list
+// (e.g. {"-i", "wg0", "-j", "DROP"}).
+type ruleSpec []string
+
+// chainKey identifies the chain a seeded entry belongs to. It holds
+// built-in chain names ("INPUT", "FORWARD", "PREROUTING") plus the
+// synthetic mangleForwardKey bucket for the mangle FORWARD guard rules.
+type chainKey string
+
+// aclEntries maps a chain to the rules seeded into it to jump into or
+// guard the netbird ACL chains.
+type aclEntries map[chainKey][]ruleSpec
+
+type entry struct {
+	spec     ruleSpec
+	position int
+}
+
+// ipsetCounter is the shared hash:net refcounter used by peer and
+// route ACLs alike. The ipset library does not support comments, so
+// the key is just the set name (string).
+type ipsetCounter = refcounter.Counter[string, []netip.Prefix, struct{}]
+
+// family holds the per-address-family iptables state. One instance
+// handles route ACLs, peer ACLs, NAT, DNAT, and MSS clamping for a
+// single family; the top-level Manager owns one for v4 and another
+// for v6.
+type family struct {
+	iptablesClient *iptables.IPTables
+	wgIface        iFaceMapper
+	v6             bool
+
+	// Peer ACL chain bookkeeping.
+	entries         aclEntries
+	optionalEntries map[chainKey][]entry
+
+	// filters holds peer + route filter rules keyed by content hash.
+	// AddFilterRule writes here; DeleteFilterRule looks up by id.
+	filters      map[nbid.RuleID]*Rule
+	ipsetCounter *ipsetCounter
+
+	// rules holds NAT, jump, and MSS-clamping rules (auxiliary
+	// plumbing that isn't a filter rule).
+	rules routeRules
+
+	// Routing / NAT.
+	legacyManagement bool
+	mtu              uint16
+	ipFwdState       *ipfwdstate.IPForwardingState
+
+	stateManager *statemanager.Manager
+}
+
+func newFamily(iptablesClient *iptables.IPTables, wgIface iFaceMapper, mtu uint16) (*family, error) {
+	r := &family{
+		iptablesClient:  iptablesClient,
+		wgIface:         wgIface,
+		v6:              iptablesClient.Proto() == iptables.ProtocolIPv6,
+		entries:         make(aclEntries),
+		optionalEntries: make(map[chainKey][]entry),
+		filters:         make(map[nbid.RuleID]*Rule),
+		rules:           make(routeRules),
+		mtu:             mtu,
+		ipFwdState:      ipfwdstate.NewIPForwardingState(),
+	}
+
+	r.ipsetCounter = refcounter.New(
+		func(name string, sources []netip.Prefix) (struct{}, error) {
+			return struct{}{}, r.createIpSet(name, sources)
+		},
+		func(name string, _ struct{}) error {
+			return r.deleteIpSet(name)
+		},
+	)
+
+	return r, nil
+}
+
+// init wires the family to the state manager and installs both the
+// route ACL containers and the peer ACL chain skeleton.
+func (r *family) init(stateManager *statemanager.Manager) error {
+	r.stateManager = stateManager
+
+	if err := r.cleanUpDefaultForwardRules(); err != nil {
+		log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
+	}
+
+	if err := r.createContainers(); err != nil {
+		return fmt.Errorf("create containers: %w", err)
+	}
+
+	if err := r.setupDataPlaneMark(); err != nil {
+		log.Errorf("failed to set up data plane mark: %v", err)
+	}
+
+	r.seedInitialEntries()
+	r.seedInitialOptionalEntries()
+
+	if err := r.cleanAclChains(); err != nil {
+		return fmt.Errorf("clean acl chains: %w", err)
+	}
+	if err := r.createDefaultChains(); err != nil {
+		return fmt.Errorf("create default chains: %w", err)
+	}
+
+	r.updateState()
+
+	return nil
+}
+
+// Reset tears down all firewall state owned by this family. ACL
+// chain cleanup runs before route-chain cleanup because the route
+// chains are still referenced by FORWARD jumps installed during
+// seedInitialEntries; deleting them first would trip EBUSY.
+func (r *family) Reset() error {
+	var merr *multierror.Error
+
+	if err := r.cleanAclChains(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.cleanUpDefaultForwardRules(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.ipsetCounter.Flush(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.cleanupDataPlaneMark(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	clear(r.rules)
+	clear(r.filters)
+	r.updateState()
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) updateState() {
+	if r.stateManager == nil {
+		return
+	}
+
+	var currentState *ShutdownState
+	if existing := r.stateManager.GetState(currentState); existing != nil {
+		if existingState, ok := existing.(*ShutdownState); ok {
+			currentState = existingState
+		}
+	}
+	if currentState == nil {
+		currentState = &ShutdownState{}
+	}
+
+	currentState.Lock()
+	defer currentState.Unlock()
+
+	// Clone the rule maps so the persisted state holds a private snapshot.
+	// The live maps keep being mutated by subsequent rule operations while
+	// the state manager marshals the state from its periodic-save goroutine.
+	// Sharing the maps by reference races the two and aborts the process with
+	// a concurrent map iteration and write. The ipset counter guards itself
+	// during marshaling, so it can be shared directly.
+	if r.v6 {
+		currentState.RouteRules6 = maps.Clone(r.rules)
+		currentState.RouteIPsetCounter6 = r.ipsetCounter
+		currentState.ACLEntries6 = maps.Clone(r.entries)
+	} else {
+		currentState.RouteRules = maps.Clone(r.rules)
+		currentState.RouteIPsetCounter = r.ipsetCounter
+		currentState.ACLEntries = maps.Clone(r.entries)
+	}
+
+	if err := r.stateManager.UpdateState(currentState); err != nil {
+		log.Errorf("failed to update state: %v", err)
+	}
+}

client/firewall/iptables/filter_linux.go

@@ -0,0 +1,346 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+	"net/netip"
+	"slices"
+	"strconv"
+	"strings"
+
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbid "github.com/netbirdio/netbird/client/internal/acl/id"
+	nbnet "github.com/netbirdio/netbird/client/net"
+)
+
+// AddFilterRule installs a packet-filtering rule. With destination
+// empty, the rule goes to the peer ACL input chain plus a paired
+// mangle PREROUTING rule for the redirect mark. With destination set
+// (prefix or named set), it goes to the route ACL forward chain.
+// Multi-source rules collapse to one iptables rule via the shared
+// hash:net ipset.
+func (r *family) AddFilterRule(
+	id []byte,
+	sources []netip.Prefix,
+	destination firewall.Network,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
+	ruleID := nbid.GenerateRuleID(sources, destination, proto, sPort, dPort, action)
+	if existing, ok := r.filters[ruleID]; ok {
+		return existing, nil
+	}
+
+	srcMatch, err := r.applySourceMatch(sourceNetwork(sources), sources)
+	if err != nil {
+		return nil, fmt.Errorf("apply source match: %w", err)
+	}
+
+	rule, err := r.installFilterRule(ruleID, srcMatch, destination, proto, sPort, dPort, action)
+	if err != nil {
+		r.dropSourceMatch(srcMatch)
+		return nil, err
+	}
+
+	r.filters[ruleID] = rule
+	r.updateState()
+	return rule, nil
+}
+
+func (r *family) hasRule(id nbid.RuleID) bool {
+	_, ok := r.filters[id]
+	return ok
+}
+
+// hasDNATRule reports whether this family owns the DNAT rule set for
+// the given user id. DNAT rules live in r.rules under the well-known
+// "<id>_dnat" key; the lookup here is used by Manager.DeleteDNATRule
+// to pick the right family.
+func (r *family) hasDNATRule(id firewall.RuleID) bool {
+	_, ok := r.rules[id+dnatSuffix]
+	return ok
+}
+
+// DeleteFilterRule removes a previously installed filter rule. The
+// rule's stored chain/table identify where to delete from; source set
+// references are recovered from the spec via findSets and dropped
+// from the shared ipset counter.
+func (r *family) DeleteFilterRule(rule firewall.Rule) error {
+	ruleID := rule.ID()
+	pr, ok := r.filters[ruleID]
+	if !ok {
+		log.Debugf("filter rule %s not found", ruleID)
+		return nil
+	}
+
+	// DeleteIfExists keeps both deletes idempotent so a retry after a
+	// partial failure does not error on the half that was already removed.
+	var merr *multierror.Error
+	if err := r.iptablesClient.DeleteIfExists(tableFilter, pr.chain, pr.specs...); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("delete rule from %s: %w", pr.chain, err))
+	}
+	if pr.mangleSpecs != nil {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainRTPre, pr.mangleSpecs...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete mangle rule: %w", err))
+		}
+	}
+	if merr != nil {
+		// Leave the rule tracked so the caller retries the remaining half.
+		return nberrors.FormatErrorOrNil(merr)
+	}
+
+	// The rule is gone from iptables, so untrack it regardless of how the
+	// refcount decrement goes, but surface decrement failures so callers
+	// see the ipset desync.
+	delete(r.filters, ruleID)
+	r.updateState()
+	if err := r.decrementSetCounter(pr.specs); err != nil {
+		return fmt.Errorf("drop source set references: %w", err)
+	}
+	return nil
+}
+
+// findSets scans an iptables rule spec for "-m set --match-set <name>
+// <dir>" fragments and returns the named sets in occurrence order.
+// Used at delete time to drop ipsetCounter references.
+func findSets(rule []string) []string {
+	var sets []string
+	for i, arg := range rule {
+		if arg == "-m" && i+3 < len(rule) && rule[i+1] == "set" && rule[i+2] == matchSet {
+			sets = append(sets, rule[i+3])
+		}
+	}
+	return sets
+}
+
+// sourceNetwork classifies a source-prefix list into the firewall.Network
+// shape the rest of the spec-builder consumes: empty for match-any, a
+// single prefix inline, or an ipset for multiple sources.
+func sourceNetwork(sources []netip.Prefix) firewall.Network {
+	switch {
+	case len(sources) == 0:
+		return firewall.Network{}
+	case len(sources) == 1 && sources[0].Bits() == 0:
+		return firewall.Network{}
+	case len(sources) == 1:
+		return firewall.Network{Prefix: sources[0]}
+	default:
+		return firewall.Network{Set: firewall.NewPrefixSet(sources)}
+	}
+}
+
+// applySourceMatch returns the iptables match fragment for the rule's
+// source. For a Set it increments the shared ipset's refcount; for a
+// Prefix it emits a direct -s match; for the wildcard it returns nil.
+func (r *family) applySourceMatch(network firewall.Network, prefixes []netip.Prefix) ([]string, error) {
+	switch {
+	case network.IsSet():
+		if r.ipsetCounter == nil {
+			return nil, fmt.Errorf("multi-source peer rule requires shared ipset counter")
+		}
+		name := r.ipsetName(network.Set.HashedName())
+		if _, err := r.ipsetCounter.Increment(name, prefixes); err != nil {
+			return nil, fmt.Errorf("ipset increment %s: %w", name, err)
+		}
+		return []string{"-m", "set", matchSet, name, "src"}, nil
+	case network.IsPrefix():
+		return []string{"-s", network.Prefix.String()}, nil
+	default:
+		return nil, nil
+	}
+}
+
+// dropSourceMatch undoes whatever applySourceMatch reserved when
+// installing a rule fails. Safe to call when the spec is empty or holds
+// only inline matchers. Decrement errors are logged but not returned:
+// the install error is what the caller needs to see.
+func (r *family) dropSourceMatch(srcMatch []string) {
+	if r.ipsetCounter == nil {
+		return
+	}
+	for _, name := range findSets(srcMatch) {
+		if _, err := r.ipsetCounter.Decrement(name); err != nil {
+			log.Errorf("rollback ipset decrement %s: %v", name, err)
+		}
+	}
+}
+
+// decrementSetCounter drops ipset references owned by a raw rule spec
+// stored in r.rules (NAT / legacy route entries). It returns an error
+// aggregate so the caller surfaces decrement failures.
+func (r *family) decrementSetCounter(rule []string) error {
+	if r.ipsetCounter == nil {
+		return nil
+	}
+	var merr *multierror.Error
+	for _, name := range findSets(rule) {
+		if _, err := r.ipsetCounter.Decrement(name); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("decrement counter: %w", err))
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// installFilterRule assembles and writes one iptables filter-chain
+// rule. With destination empty the rule lands in the peer ACL input
+// chain and a paired mangle PREROUTING rule is added for the redirect
+// mark. With destination set the rule lands in the route ACL forward
+// chain and there is no mangle pairing.
+func (r *family) installFilterRule(
+	ruleID nbid.RuleID,
+	srcMatch []string,
+	destination firewall.Network,
+	protocol firewall.Protocol,
+	sPort, dPort *firewall.Port,
+	action firewall.Action,
+) (*Rule, error) {
+	isRoute := !destination.IsZero()
+
+	proto := protoForFamily(protocol, r.v6)
+
+	specs := slices.Clone(srcMatch)
+	var destExp []string
+	if isRoute {
+		var err error
+		destExp, err = r.applyNetwork("-d", destination, nil)
+		if err != nil {
+			return nil, fmt.Errorf("apply network -d: %w", err)
+		}
+		specs = append(specs, destExp...)
+	}
+	specs = append(specs, filterMatchSpecs(proto, sPort, dPort)...)
+
+	var mangleSpecs []string
+	if !isRoute {
+		mangleSpecs = slices.Clone(specs)
+		mangleSpecs = append(mangleSpecs,
+			"-i", r.wgIface.Name(),
+			"-m", "addrtype", "--dst-type", "LOCAL",
+			"-j", "MARK", "--set-xmark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected),
+		)
+	}
+
+	specs = append(specs, "-j", actionToStr(action))
+
+	chain := chainACLInput
+	if isRoute {
+		chain = chainRTFwdIn
+	}
+
+	// Peer ACL drops are inserted at position 1 so they precede the
+	// chain's catch-all; route ACL drops are inserted at position 2
+	// to sit immediately after the established/related accept rule.
+	var err error
+	if action == firewall.ActionDrop {
+		pos := 1
+		if isRoute {
+			pos = 2
+		}
+		err = r.iptablesClient.Insert(tableFilter, chain, pos, specs...)
+	} else {
+		err = r.iptablesClient.Append(tableFilter, chain, specs...)
+	}
+	if err != nil {
+		r.dropSourceMatch(destExp)
+		return nil, fmt.Errorf("install filter rule on %s: %w", chain, err)
+	}
+
+	// The mangle redirect-mark rule is best effort: the filter rule itself
+	// is what enforces the ACL, so a mangle failure must not undo it. Drop
+	// the spec so teardown does not try to remove a rule that was not added.
+	if mangleSpecs != nil {
+		if err := r.iptablesClient.Append(tableMangle, chainRTPre, mangleSpecs...); err != nil {
+			log.Errorf("add mangle rule: %v", err)
+			mangleSpecs = nil
+		}
+	}
+
+	return &Rule{
+		id:          ruleID,
+		specs:       specs,
+		mangleSpecs: mangleSpecs,
+		chain:       chain,
+		v6:          r.v6,
+	}, nil
+}
+
+// applyNetwork resolves a firewall.Network into the iptables match
+// fragment for the given direction flag (-s or -d). Set networks
+// increment the shared ipset refcount; prefixes emit a direct match;
+// an empty network returns no spec ("match any").
+func (r *family) applyNetwork(flag string, network firewall.Network, prefixes []netip.Prefix) ([]string, error) {
+	direction := "src"
+	if flag == "-d" {
+		direction = "dst"
+	}
+
+	if network.IsSet() {
+		name := r.ipsetName(network.Set.HashedName())
+		if _, err := r.ipsetCounter.Increment(name, prefixes); err != nil {
+			return nil, fmt.Errorf("create or get ipset: %w", err)
+		}
+
+		return []string{"-m", "set", matchSet, name, direction}, nil
+	}
+	if network.IsPrefix() {
+		return []string{flag, network.Prefix.String()}, nil
+	}
+
+	// nolint:nilnil
+	return nil, nil
+}
+
+// protoForFamily translates ICMP to ICMPv6 for ip6tables.
+// ip6tables requires "ipv6-icmp" (or "icmpv6") instead of "icmp".
+func protoForFamily(protocol firewall.Protocol, v6 bool) string {
+	if v6 && protocol == firewall.ProtocolICMP {
+		return "ipv6-icmp"
+	}
+	return string(protocol)
+}
+
+// filterMatchSpecs returns the proto/port match fragment for a
+// filtering rule. The source match (-s or -m set) is built by the
+// caller and prepended.
+func filterMatchSpecs(protocol string, sPort, dPort *firewall.Port) (specs []string) {
+	if protocol != "all" {
+		specs = append(specs, "-p", protocol)
+	}
+	specs = append(specs, applyPort("--sport", sPort)...)
+	specs = append(specs, applyPort("--dport", dPort)...)
+	return specs
+}
+
+func actionToStr(action firewall.Action) string {
+	if action == firewall.ActionAccept {
+		return "ACCEPT"
+	}
+	return "DROP"
+}
+
+func applyPort(flag string, port *firewall.Port) []string {
+	if port == nil {
+		return nil
+	}
+
+	if port.IsRange && len(port.Values) == 2 {
+		return []string{flag, fmt.Sprintf("%d:%d", port.Values[0], port.Values[1])}
+	}
+
+	if len(port.Values) > 1 {
+		portList := make([]string, len(port.Values))
+		for i, p := range port.Values {
+			portList[i] = strconv.Itoa(int(p))
+		}
+		return []string{"-m", "multiport", flag, strings.Join(portList, ",")}
+	}
+
+	return []string{flag, strconv.Itoa(int(port.Values[0]))}
+}

client/firewall/iptables/interface_allower_linux.go

@@ -0,0 +1,93 @@
+package iptables
+
+import (
+	"fmt"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+)
+
+// InterfaceAllower opens the NetBird interface on the iptables filter INPUT
+// chain so the host firewall doesn't drop traffic the userspace firewall
+// handles. It is the fallback used when nftables is unavailable (an
+// iptables-legacy host).
+//
+// It opens INPUT only: the userspace router never forwards in the kernel.
+// firewalld trust is handled by the uspfilter manager, not here.
+type InterfaceAllower struct {
+	ifaceName string
+	ipt4      *iptables.IPTables
+	// ipt6 is nil when the interface has no IPv6 overlay address.
+	ipt6 *iptables.IPTables
+}
+
+// NewInterfaceAllower builds an iptables allower for the interface. It returns
+// an error when iptables is unavailable, so the caller can fall back to
+// firewalld trust.
+func NewInterfaceAllower(wgIface iFaceMapper) (*InterfaceAllower, error) {
+	ipt4, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	if err != nil {
+		return nil, fmt.Errorf("iptables not available: %w", err)
+	}
+	if _, err := ipt4.ListChains(tableFilter); err != nil {
+		return nil, fmt.Errorf("iptables filter table not available: %w", err)
+	}
+
+	a := &InterfaceAllower{ifaceName: wgIface.Name(), ipt4: ipt4}
+
+	// Missing v6 must not break the v4 path: open v4 only and continue.
+	if wgIface.Address().HasIPv6() {
+		ipt6, err := iptables.NewWithProtocol(iptables.ProtocolIPv6)
+		if err != nil {
+			log.Warnf("ip6tables not available, opening interface on v4 only: %v", err)
+		} else if _, err := ipt6.ListChains(tableFilter); err != nil {
+			log.Warnf("ip6tables filter table not available, opening interface on v4 only: %v", err)
+		} else {
+			a.ipt6 = ipt6
+		}
+	}
+
+	return a, nil
+}
+
+// Apply inserts the interface accept rule on the filter INPUT chain. It removes
+// any stale rule first so an unclean exit (e.g. SIGKILL, where Close never ran)
+// is recovered deterministically rather than accumulating duplicates.
+func (a *InterfaceAllower) Apply() error {
+	var merr *multierror.Error
+	for _, ipt := range a.clients() {
+		if err := ipt.DeleteIfExists(tableFilter, chainInput, a.inputRule()...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("clean stale interface accept rule: %w", err))
+		}
+		if err := ipt.Insert(tableFilter, chainInput, 1, a.inputRule()...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("add interface accept rule: %w", err))
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// Close removes the interface accept rule.
+func (a *InterfaceAllower) Close() error {
+	var merr *multierror.Error
+	for _, ipt := range a.clients() {
+		if err := ipt.DeleteIfExists(tableFilter, chainInput, a.inputRule()...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove interface accept rule: %w", err))
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (a *InterfaceAllower) inputRule() []string {
+	return []string{"-i", a.ifaceName, "-j", "ACCEPT"}
+}
+
+func (a *InterfaceAllower) clients() []*iptables.IPTables {
+	clients := []*iptables.IPTables{a.ipt4}
+	if a.ipt6 != nil {
+		clients = append(clients, a.ipt6)
+	}
+	return clients
+}

client/firewall/iptables/ipset_linux.go

@@ -0,0 +1,104 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+	"net/netip"
+
+	"github.com/hashicorp/go-multierror"
+	"github.com/lrh3321/ipset-go"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+)
+
+func (r *family) createIpSet(setName string, sources []netip.Prefix) error {
+	if err := r.createIPSet(setName); err != nil {
+		return fmt.Errorf("create set %s: %w", setName, err)
+	}
+
+	for _, prefix := range sources {
+		if err := r.addPrefixToIPSet(setName, prefix); err != nil {
+			// The refcounter records nothing when this callback errors,
+			// so destroy the set or it leaks in the kernel. A partial
+			// source set would also fail-open for deny rules, so the
+			// rule must fail rather than install with a missing source.
+			if derr := r.destroyIPSet(setName); derr != nil {
+				log.Warnf("rollback ipset %s after add failure: %v", setName, derr)
+			}
+			return fmt.Errorf("add element to set %s: %w", setName, err)
+		}
+	}
+
+	return nil
+}
+
+func (r *family) deleteIpSet(setName string) error {
+	if err := r.destroyIPSet(setName); err != nil {
+		return fmt.Errorf("destroy set %s: %w", setName, err)
+	}
+
+	log.Debugf("deleted unused ipset %s", setName)
+	return nil
+}
+
+func (r *family) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
+	name := r.ipsetName(set.HashedName())
+	var merr *multierror.Error
+	for _, prefix := range prefixes {
+		if err := r.addPrefixToIPSet(name, prefix); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("add prefix to ipset: %w", err))
+		}
+	}
+	if merr == nil {
+		log.Debugf("updated set %s with prefixes %v", name, prefixes)
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) ipsetName(name string) string {
+	if r.v6 {
+		return name + "-v6"
+	}
+	return name
+}
+
+func (r *family) createIPSet(name string) error {
+	opts := ipset.CreateOptions{
+		Replace: true,
+	}
+	if r.v6 {
+		opts.Family = ipset.FamilyIPV6
+	}
+
+	if err := ipset.Create(name, ipset.TypeHashNet, opts); err != nil {
+		return fmt.Errorf("create ipset %s: %w", name, err)
+	}
+
+	log.Debugf("created ipset %s with type hash:net", name)
+	return nil
+}
+
+func (r *family) addPrefixToIPSet(name string, prefix netip.Prefix) error {
+	addr := prefix.Addr()
+	ip := addr.AsSlice()
+
+	entry := &ipset.Entry{
+		IP:      ip,
+		CIDR:    uint8(prefix.Bits()),
+		Replace: true,
+	}
+
+	if err := ipset.Add(name, entry); err != nil {
+		return fmt.Errorf("add prefix to ipset %s: %w", name, err)
+	}
+
+	return nil
+}
+
+func (r *family) destroyIPSet(name string) error {
+	return ipset.Destroy(name)
+}

client/firewall/iptables/manager_linux.go

@@ -3,7 +3,6 @@ package iptables
 import (
 	"context"
 	"fmt"
-	"net"
 	"net/netip"
 	"sync"
 
@@ -18,25 +17,21 @@ import (
 	"github.com/netbirdio/netbird/client/internal/statemanager"
 )
 
-type resetter interface {
-	Reset() error
-}
-
-// Manager of iptables firewall
+// Manager of iptables firewall. Per-family state (peer ACLs, route
+// ACLs, NAT, DNAT, MSS clamping) lives on family; Manager dispatches
+// by family and provides the public firewall.Manager surface.
 type Manager struct {
 	mutex sync.Mutex
 
 	wgIface iFaceMapper
 
 	ipv4Client   *iptables.IPTables
-	aclMgr       *aclManager
-	router       *router
+	family4      *family
 	rawSupported bool
 
 	// IPv6 counterparts, nil when no v6 overlay
 	ipv6Client *iptables.IPTables
-	aclMgr6    *aclManager
-	router6    *router
+	family6    *family
 }
 
 // iFaceMapper defines subset methods of interface required for manager
@@ -57,14 +52,9 @@ func Create(wgIface iFaceMapper, mtu uint16) (*Manager, error) {
 		ipv4Client: iptablesClient,
 	}
 
-	m.router, err = newRouter(iptablesClient, wgIface, mtu)
+	m.family4, err = newFamily(iptablesClient, wgIface, mtu)
 	if err != nil {
-		return nil, fmt.Errorf("create router: %w", err)
-	}
-
-	m.aclMgr, err = newAclManager(iptablesClient, wgIface)
-	if err != nil {
-		return nil, fmt.Errorf("create acl manager: %w", err)
+		return nil, fmt.Errorf("create family: %w", err)
 	}
 
 	if wgIface.Address().HasIPv6() {
@@ -81,21 +71,18 @@ func (m *Manager) createIPv6Components(wgIface iFaceMapper, mtu uint16) error {
 	if err != nil {
 		return fmt.Errorf("init ip6tables: %w", err)
 	}
-	m.ipv6Client = ip6Client
 
-	m.router6, err = newRouter(ip6Client, wgIface, mtu)
+	family6, err := newFamily(ip6Client, wgIface, mtu)
 	if err != nil {
-		return fmt.Errorf("create v6 router: %w", err)
+		return fmt.Errorf("create v6 family: %w", err)
 	}
 
-	// Share the same IP forwarding state with the v4 router, since
+	// Share the same IP forwarding state with the v4 family, since
 	// EnableIPForwarding controls both v4 and v6 sysctls.
-	m.router6.ipFwdState = m.router.ipFwdState
+	family6.ipFwdState = m.family4.ipFwdState
 
-	m.aclMgr6, err = newAclManager(ip6Client, wgIface)
-	if err != nil {
-		return fmt.Errorf("create v6 acl manager: %w", err)
-	}
+	m.ipv6Client = ip6Client
+	m.family6 = family6
 
 	return nil
 }
@@ -109,7 +96,7 @@ func (m *Manager) Init(stateManager *statemanager.Manager) error {
 		InterfaceState: &InterfaceState{
 			NameStr:   m.wgIface.Name(),
 			WGAddress: m.wgIface.Address(),
-			MTU:       m.router.mtu,
+			MTU:       m.family4.mtu,
 		},
 	}
 	stateManager.RegisterState(state)
@@ -141,31 +128,24 @@ func (m *Manager) Init(stateManager *statemanager.Manager) error {
 	return nil
 }
 
-// initChains initializes router and ACL chains for both address families,
-// rolling back on failure.
+// initChains initializes the per-family firewall state for both
+// address families, rolling back on failure.
 func (m *Manager) initChains(stateManager *statemanager.Manager) error {
 	type initStep struct {
 		name string
-		init func(*statemanager.Manager) error
-		mgr  resetter
+		r    *family
 	}
 
-	steps := []initStep{
-		{"router", m.router.init, m.router},
-		{"acl manager", m.aclMgr.init, m.aclMgr},
-	}
+	steps := []initStep{{"v4", m.family4}}
 	if m.hasIPv6() {
-		steps = append(steps,
-			initStep{"v6 router", m.router6.init, m.router6},
-			initStep{"v6 acl manager", m.aclMgr6.init, m.aclMgr6},
-		)
+		steps = append(steps, initStep{"v6", m.family6})
 	}
 
 	var initialized []initStep
 	for _, s := range steps {
-		if err := s.init(stateManager); err != nil {
+		if err := s.r.init(stateManager); err != nil {
 			for i := len(initialized) - 1; i >= 0; i-- {
-				if rerr := initialized[i].mgr.Reset(); rerr != nil {
+				if rerr := initialized[i].r.Reset(); rerr != nil {
 					log.Warnf("rollback %s: %v", initialized[i].name, rerr)
 				}
 			}
@@ -176,84 +156,50 @@ func (m *Manager) initChains(stateManager *statemanager.Manager) error {
 	return nil
 }
 
-// AddPeerFiltering adds a rule to the firewall
-//
-// Comment will be ignored because some system this feature is not supported
-func (m *Manager) AddPeerFiltering(
-	id []byte,
-	ip net.IP,
-	proto firewall.Protocol,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	action firewall.Action,
-	ipsetName string,
-) ([]firewall.Rule, error) {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	if ip.To4() != nil {
-		return m.aclMgr.AddPeerFiltering(id, ip, proto, sPort, dPort, action, ipsetName)
-	}
-	if !m.hasIPv6() {
-		return nil, fmt.Errorf("add peer filtering for %s: %w", ip, firewall.ErrIPv6NotInitialized)
-	}
-	return m.aclMgr6.AddPeerFiltering(id, ip, proto, sPort, dPort, action, ipsetName)
-}
-
-func (m *Manager) AddRouteFiltering(
+// AddFilterRule installs a packet-filtering rule. See firewall.Manager
+// docs for destination semantics. Sources are a single address family;
+// the rule is dispatched to the matching v4 / v6 backend.
+func (m *Manager) AddFilterRule(
 	id []byte,
 	sources []netip.Prefix,
 	destination firewall.Network,
 	proto firewall.Protocol,
-	sPort, dPort *firewall.Port,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
 	action firewall.Action,
 ) (firewall.Rule, error) {
+	if len(sources) == 0 {
+		return nil, firewall.ErrNoSources
+	}
+
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if isIPv6RouteRule(sources, destination) {
+	fam := m.family4
+	if isIPv6Rule(sources, destination) {
 		if !m.hasIPv6() {
-			return nil, fmt.Errorf("add route filtering: %w", firewall.ErrIPv6NotInitialized)
+			return nil, fmt.Errorf("add filtering: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddRouteFiltering(id, sources, destination, proto, sPort, dPort, action)
+		fam = m.family6
 	}
-
-	return m.router.AddRouteFiltering(id, sources, destination, proto, sPort, dPort, action)
+	return fam.AddFilterRule(id, sources, destination, proto, sPort, dPort, action)
 }
 
-func isIPv6RouteRule(sources []netip.Prefix, destination firewall.Network) bool {
-	if destination.IsPrefix() {
-		return destination.Prefix.Addr().Is6()
-	}
-	return len(sources) > 0 && sources[0].Addr().Is6()
-}
-
-// DeletePeerRule from the firewall by rule definition
-func (m *Manager) DeletePeerRule(rule firewall.Rule) error {
+// DeleteFilterRule removes a rule previously added via AddFilterRule.
+// The rule is looked up by id in each family's filter cache.
+func (m *Manager) DeleteFilterRule(rule firewall.Rule) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if m.hasIPv6() && isIPv6IptRule(rule) {
-		return m.aclMgr6.DeletePeerRule(rule)
+	id := rule.ID()
+	if m.family4.hasRule(id) {
+		return m.family4.DeleteFilterRule(rule)
 	}
-	return m.aclMgr.DeletePeerRule(rule)
-}
-
-func isIPv6IptRule(rule firewall.Rule) bool {
-	r, ok := rule.(*Rule)
-	return ok && r.v6
-}
-
-// DeleteRouteRule deletes a routing rule.
-// Route rules are keyed by content hash. Check v4 first, try v6 if not found.
-func (m *Manager) DeleteRouteRule(rule firewall.Rule) error {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	if m.hasIPv6() && !m.router.hasRule(rule.ID()) {
-		return m.router6.DeleteRouteRule(rule)
+	if m.hasIPv6() && m.family6.hasRule(id) {
+		return m.family6.DeleteFilterRule(rule)
 	}
-	return m.router.DeleteRouteRule(rule)
+	log.Debugf("filter rule %s not found in any family", id)
+	return nil
 }
 
 func (m *Manager) IsServerRouteSupported() bool {
@@ -272,10 +218,10 @@ func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 		if !m.hasIPv6() {
 			return fmt.Errorf("add NAT rule: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddNatRule(pair)
+		return m.family6.AddNatRule(pair)
 	}
 
-	if err := m.router.AddNatRule(pair); err != nil {
+	if err := m.family4.AddNatRule(pair); err != nil {
 		return err
 	}
 
@@ -284,7 +230,7 @@ func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	// wildcard 0.0.0.0/0 destination where the client resolves DNS.
 	if m.hasIPv6() && pair.Dynamic {
 		v6Pair := firewall.ToV6NatPair(pair)
-		if err := m.router6.AddNatRule(v6Pair); err != nil {
+		if err := m.family6.AddNatRule(v6Pair); err != nil {
 			return fmt.Errorf("add v6 NAT rule: %w", err)
 		}
 	}
@@ -300,18 +246,18 @@ func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 		if !m.hasIPv6() {
 			return nil
 		}
-		return m.router6.RemoveNatRule(pair)
+		return m.family6.RemoveNatRule(pair)
 	}
 
 	var merr *multierror.Error
 
-	if err := m.router.RemoveNatRule(pair); err != nil {
+	if err := m.family4.RemoveNatRule(pair); err != nil {
 		merr = multierror.Append(merr, fmt.Errorf("remove v4 NAT rule: %w", err))
 	}
 
 	if m.hasIPv6() && pair.Dynamic {
 		v6Pair := firewall.ToV6NatPair(pair)
-		if err := m.router6.RemoveNatRule(v6Pair); err != nil {
+		if err := m.family6.RemoveNatRule(v6Pair); err != nil {
 			merr = multierror.Append(merr, fmt.Errorf("remove v6 NAT rule: %w", err))
 		}
 	}
@@ -320,11 +266,14 @@ func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 }
 
 func (m *Manager) SetLegacyManagement(isLegacy bool) error {
-	if err := firewall.SetLegacyManagement(m.router, isLegacy); err != nil {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	if err := firewall.SetLegacyManagement(m.family4, isLegacy); err != nil {
 		return err
 	}
 	if m.hasIPv6() {
-		return firewall.SetLegacyManagement(m.router6, isLegacy)
+		return firewall.SetLegacyManagement(m.family6, isLegacy)
 	}
 	return nil
 }
@@ -341,19 +290,13 @@ func (m *Manager) Close(stateManager *statemanager.Manager) error {
 	}
 
 	if m.hasIPv6() {
-		if err := m.aclMgr6.Reset(); err != nil {
-			merr = multierror.Append(merr, fmt.Errorf("reset v6 acl manager: %w", err))
-		}
-		if err := m.router6.Reset(); err != nil {
-			merr = multierror.Append(merr, fmt.Errorf("reset v6 router: %w", err))
+		if err := m.family6.Reset(); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("reset v6 family: %w", err))
 		}
 	}
 
-	if err := m.aclMgr.Reset(); err != nil {
-		merr = multierror.Append(merr, fmt.Errorf("reset acl manager: %w", err))
-	}
-	if err := m.router.Reset(); err != nil {
-		merr = multierror.Append(merr, fmt.Errorf("reset router: %w", err))
+	if err := m.family4.Reset(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("reset family: %w", err))
 	}
 
 	// Appending to merr intentionally blocks DeleteState below so ShutdownState
@@ -372,27 +315,6 @@ func (m *Manager) Close(stateManager *statemanager.Manager) error {
 	return nberrors.FormatErrorOrNil(merr)
 }
 
-// AllowNetbird allows netbird interface traffic.
-// This is called when USPFilter wraps the native firewall, adding blanket accept
-// rules so that packet filtering is handled in userspace instead of by netfilter.
-func (m *Manager) AllowNetbird() error {
-	var merr *multierror.Error
-	if _, err := m.AddPeerFiltering(nil, net.IP{0, 0, 0, 0}, firewall.ProtocolALL, nil, nil, firewall.ActionAccept, ""); err != nil {
-		merr = multierror.Append(merr, fmt.Errorf("allow netbird v4 interface traffic: %w", err))
-	}
-	if m.hasIPv6() {
-		if _, err := m.AddPeerFiltering(nil, net.IPv6zero, firewall.ProtocolALL, nil, nil, firewall.ActionAccept, ""); err != nil {
-			merr = multierror.Append(merr, fmt.Errorf("allow netbird v6 interface traffic: %w", err))
-		}
-	}
-
-	if err := firewalld.TrustInterface(m.wgIface.Name()); err != nil {
-		log.Warnf("failed to trust interface in firewalld: %v", err)
-	}
-
-	return nberrors.FormatErrorOrNil(merr)
-}
-
 // Flush doesn't need to be implemented for this manager
 func (m *Manager) Flush() error { return nil }
 
@@ -402,14 +324,14 @@ func (m *Manager) SetLogLevel(log.Level) {
 }
 
 func (m *Manager) EnableRouting() error {
-	if err := m.router.ipFwdState.RequestForwarding(); err != nil {
+	if err := m.family4.ipFwdState.RequestForwarding(); err != nil {
 		return fmt.Errorf("enable IP forwarding: %w", err)
 	}
 	return nil
 }
 
 func (m *Manager) DisableRouting() error {
-	if err := m.router.ipFwdState.ReleaseForwarding(); err != nil {
+	if err := m.family4.ipFwdState.ReleaseForwarding(); err != nil {
 		return fmt.Errorf("disable IP forwarding: %w", err)
 	}
 	return nil
@@ -424,9 +346,9 @@ func (m *Manager) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error)
 		if !m.hasIPv6() {
 			return nil, fmt.Errorf("add DNAT rule: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddDNATRule(rule)
+		return m.family6.AddDNATRule(rule)
 	}
-	return m.router.AddDNATRule(rule)
+	return m.family4.AddDNATRule(rule)
 }
 
 // DeleteDNATRule deletes a DNAT rule
@@ -434,10 +356,10 @@ func (m *Manager) DeleteDNATRule(rule firewall.Rule) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if m.hasIPv6() && !m.router.hasRule(rule.ID()+dnatSuffix) {
-		return m.router6.DeleteDNATRule(rule)
+	if m.hasIPv6() && !m.family4.hasDNATRule(rule.ID()) {
+		return m.family6.DeleteDNATRule(rule)
 	}
-	return m.router.DeleteDNATRule(rule)
+	return m.family4.DeleteDNATRule(rule)
 }
 
 // UpdateSet updates the set with the given prefixes
@@ -454,12 +376,12 @@ func (m *Manager) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
 		}
 	}
 
-	if err := m.router.UpdateSet(set, v4Prefixes); err != nil {
+	if err := m.family4.UpdateSet(set, v4Prefixes); err != nil {
 		return err
 	}
 
 	if m.hasIPv6() && len(v6Prefixes) > 0 {
-		if err := m.router6.UpdateSet(set, v6Prefixes); err != nil {
+		if err := m.family6.UpdateSet(set, v6Prefixes); err != nil {
 			return fmt.Errorf("update v6 set: %w", err)
 		}
 	}
@@ -476,9 +398,9 @@ func (m *Manager) AddInboundDNAT(localAddr netip.Addr, protocol firewall.Protoco
 		if !m.hasIPv6() {
 			return fmt.Errorf("add inbound DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // RemoveInboundDNAT removes an inbound DNAT rule.
@@ -490,9 +412,9 @@ func (m *Manager) RemoveInboundDNAT(localAddr netip.Addr, protocol firewall.Prot
 		if !m.hasIPv6() {
 			return fmt.Errorf("remove inbound DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // AddOutputDNAT adds an OUTPUT chain DNAT rule for locally-generated traffic.
@@ -504,9 +426,9 @@ func (m *Manager) AddOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol
 		if !m.hasIPv6() {
 			return fmt.Errorf("add output DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // RemoveOutputDNAT removes an OUTPUT chain DNAT rule.
@@ -518,14 +440,14 @@ func (m *Manager) RemoveOutputDNAT(localAddr netip.Addr, protocol firewall.Proto
 		if !m.hasIPv6() {
 			return fmt.Errorf("remove output DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 const (
 	chainNameRaw = "NETBIRD-RAW"
-	chainOUTPUT  = "OUTPUT"
+	chainOutput  = "OUTPUT"
 	tableRaw     = "raw"
 )
 
@@ -600,15 +522,15 @@ func (m *Manager) initNoTrackChain() error {
 
 	jumpRule := []string{"-j", chainNameRaw}
 
-	if err := m.ipv4Client.InsertUnique(tableRaw, chainOUTPUT, 1, jumpRule...); err != nil {
+	if err := m.ipv4Client.InsertUnique(tableRaw, chainOutput, 1, jumpRule...); err != nil {
 		if delErr := m.ipv4Client.DeleteChain(tableRaw, chainNameRaw); delErr != nil {
 			log.Debugf("delete orphan chain: %v", delErr)
 		}
 		return fmt.Errorf("add output jump rule: %w", err)
 	}
 
-	if err := m.ipv4Client.InsertUnique(tableRaw, chainPREROUTING, 1, jumpRule...); err != nil {
-		if delErr := m.ipv4Client.DeleteIfExists(tableRaw, chainOUTPUT, jumpRule...); delErr != nil {
+	if err := m.ipv4Client.InsertUnique(tableRaw, chainPrerouting, 1, jumpRule...); err != nil {
+		if delErr := m.ipv4Client.DeleteIfExists(tableRaw, chainOutput, jumpRule...); delErr != nil {
 			log.Debugf("delete output jump rule: %v", delErr)
 		}
 		if delErr := m.ipv4Client.DeleteChain(tableRaw, chainNameRaw); delErr != nil {
@@ -635,11 +557,11 @@ func (m *Manager) cleanupNoTrackChain() error {
 
 	jumpRule := []string{"-j", chainNameRaw}
 
-	if err := m.ipv4Client.DeleteIfExists(tableRaw, chainOUTPUT, jumpRule...); err != nil {
+	if err := m.ipv4Client.DeleteIfExists(tableRaw, chainOutput, jumpRule...); err != nil {
 		return fmt.Errorf("remove output jump rule: %w", err)
 	}
 
-	if err := m.ipv4Client.DeleteIfExists(tableRaw, chainPREROUTING, jumpRule...); err != nil {
+	if err := m.ipv4Client.DeleteIfExists(tableRaw, chainPrerouting, jumpRule...); err != nil {
 		return fmt.Errorf("remove prerouting jump rule: %w", err)
 	}
 
@@ -654,3 +576,13 @@ func (m *Manager) cleanupNoTrackChain() error {
 func getConntrackEstablished() []string {
 	return []string{"-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}
 }
+
+// isIPv6Rule reports whether the rule belongs to the IPv6 family, from
+// the destination prefix when set, otherwise from the (single-family)
+// sources.
+func isIPv6Rule(sources []netip.Prefix, destination firewall.Network) bool {
+	if destination.IsPrefix() {
+		return destination.Prefix.Addr().Is6()
+	}
+	return len(sources) > 0 && sources[0].Addr().Is6()
+}

client/firewall/iptables/manager_linux_test.go

@@ -1,3 +1,5 @@
+//go:build privileged
+
 package iptables
 
 import (
@@ -65,46 +67,39 @@ func TestIptablesManager(t *testing.T) {
 		time.Sleep(time.Second)
 	}()
 
-	var rule2 []fw.Rule
+	var rule2 fw.Rule
 	t.Run("add second rule", func(t *testing.T) {
 		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{
 			IsRange: true,
 			Values:  []uint16{8043, 8046},
 		}
-		rule2, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", port, nil, fw.ActionAccept, "")
+		rule2, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", port, nil, fw.ActionAccept)
 		require.NoError(t, err, "failed to add rule")
 
-		for _, r := range rule2 {
-			rr := r.(*Rule)
-			checkRuleSpecs(t, ipv4Client, rr.chain, true, rr.specs...)
-		}
+		rr := rule2.(*Rule)
+		checkRuleSpecs(t, ipv4Client, rr.chain, true, rr.specs...)
 	})
 
 	t.Run("delete second rule", func(t *testing.T) {
-		for _, r := range rule2 {
-			err := manager.DeletePeerRule(r)
-			require.NoError(t, err, "failed to delete rule")
-		}
-
-		require.Empty(t, manager.aclMgr.ipsetStore.ipsets, "rulesets index after removed second rule must be empty")
+		require.NoError(t, manager.DeleteFilterRule(rule2), "failed to delete rule")
 	})
 
 	t.Run("reset check", func(t *testing.T) {
 		// add second rule
 		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{Values: []uint16{5353}}
-		_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "udp", nil, port, fw.ActionAccept, "")
+		_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "udp", nil, port, fw.ActionAccept)
 		require.NoError(t, err, "failed to add rule")
 
 		err = manager.Close(nil)
 		require.NoError(t, err, "failed to reset")
 
-		ok, err := ipv4Client.ChainExists("filter", chainNameInputRules)
+		ok, err := ipv4Client.ChainExists("filter", chainACLInput)
 		require.NoError(t, err, "failed check chain exists")
 
 		if ok {
-			require.NoErrorf(t, err, "chain '%v' still exists after Close", chainNameInputRules)
+			require.NoErrorf(t, err, "chain '%v' still exists after Close", chainACLInput)
 		}
 	})
 }
@@ -126,15 +121,13 @@ func TestIptablesManagerDenyRules(t *testing.T) {
 		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{Values: []uint16{22}}
 
-		rule, err := manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionDrop, "deny-ssh")
+		rule, err := manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", nil, port, fw.ActionDrop)
 		require.NoError(t, err, "failed to add deny rule")
-		require.NotEmpty(t, rule, "deny rule should not be empty")
+		require.NotNil(t, rule, "deny rule should not be nil")
 
 		// Verify the rule was added by checking iptables
-		for _, r := range rule {
-			rr := r.(*Rule)
-			checkRuleSpecs(t, ipv4Client, rr.chain, true, rr.specs...)
-		}
+		rr := rule.(*Rule)
+		checkRuleSpecs(t, ipv4Client, rr.chain, true, rr.specs...)
 	})
 
 	t.Run("deny rule precedence test", func(t *testing.T) {
@@ -142,36 +135,40 @@ func TestIptablesManagerDenyRules(t *testing.T) {
 		port := &fw.Port{Values: []uint16{80}}
 
 		// Add accept rule first
-		_, err := manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionAccept, "accept-http")
+		_, err := manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", nil, port, fw.ActionAccept)
 		require.NoError(t, err, "failed to add accept rule")
 
 		// Add deny rule second for same IP/port - this should take precedence
-		_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionDrop, "deny-http")
+		_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", nil, port, fw.ActionDrop)
 		require.NoError(t, err, "failed to add deny rule")
 
 		// Inspect the actual iptables rules to verify deny rule comes before accept rule
-		rules, err := ipv4Client.List("filter", chainNameInputRules)
+		rules, err := ipv4Client.List("filter", chainACLInput)
 		require.NoError(t, err, "failed to list iptables rules")
 
 		// Debug: print all rules
-		t.Logf("All iptables rules in chain %s:", chainNameInputRules)
+		t.Logf("All iptables rules in chain %s:", chainACLInput)
 		for i, rule := range rules {
 			t.Logf("  [%d] %s", i, rule)
 		}
 
+		// Single-source rules emit a direct `-s <ip>/32 ... --dport 80`
+		// match. Match on that shape instead of the legacy
+		// per-(action,port) ipset names ("deny-http"/"accept-http")
+		// that this test predates.
+		srcMatch := fmt.Sprintf("-s %s/32", ip)
 		var denyRuleIndex, acceptRuleIndex = -1, -1
 		for i, rule := range rules {
-			if strings.Contains(rule, "DROP") {
-				t.Logf("Found DROP rule at index %d: %s", i, rule)
-				if strings.Contains(rule, "deny-http") && strings.Contains(rule, "80") {
-					denyRuleIndex = i
-				}
+			if !strings.Contains(rule, srcMatch) || !strings.Contains(rule, "--dport 80") {
+				continue
 			}
-			if strings.Contains(rule, "ACCEPT") {
+			if strings.Contains(rule, "-j DROP") {
+				t.Logf("Found DROP rule at index %d: %s", i, rule)
+				denyRuleIndex = i
+			}
+			if strings.Contains(rule, "-j ACCEPT") {
 				t.Logf("Found ACCEPT rule at index %d: %s", i, rule)
-				if strings.Contains(rule, "accept-http") && strings.Contains(rule, "80") {
-					acceptRuleIndex = i
-				}
+				acceptRuleIndex = i
 			}
 		}
 
@@ -196,7 +193,6 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		},
 	}
 
-	// just check on the local interface
 	manager, err := Create(mock, iface.DefaultMTU)
 	require.NoError(t, err)
 	require.NoError(t, manager.Init(nil))
@@ -210,27 +206,39 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		time.Sleep(time.Second)
 	}()
 
-	var rule2 []fw.Rule
-	t.Run("add second rule", func(t *testing.T) {
+	var rule2 fw.Rule
+	t.Run("single source uses direct -s match (no ipset)", func(t *testing.T) {
 		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{
 			Values: []uint16{443},
 		}
-		rule2, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", port, nil, fw.ActionAccept, "default")
-		for _, r := range rule2 {
-			require.NoError(t, err, "failed to add rule")
-			require.Equal(t, r.(*Rule).ipsetName, "default-sport", "ipset name must be set")
-			require.Equal(t, r.(*Rule).ip, "10.20.0.3", "ipset IP must be set")
-		}
+		rule2, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", port, nil, fw.ActionAccept)
+		require.NoError(t, err, "failed to add rule")
+		require.NotNil(t, rule2)
+		require.Contains(t, rule2.(*Rule).specs, "-s",
+			"single-source rule should use direct -s match, not an ipset")
+		require.Empty(t, findSets(rule2.(*Rule).specs),
+			"single-source rule should not allocate a shared ipset")
 	})
 
-	t.Run("delete second rule", func(t *testing.T) {
-		for _, r := range rule2 {
-			err := manager.DeletePeerRule(r)
-			require.NoError(t, err, "failed to delete rule")
+	t.Run("delete single-source rule", func(t *testing.T) {
+		require.NoError(t, manager.DeleteFilterRule(rule2), "failed to delete rule")
+	})
 
-			require.Empty(t, manager.aclMgr.ipsetStore.ipsets, "rulesets index after removed second rule must be empty")
+	t.Run("multi-source uses shared ipset", func(t *testing.T) {
+		sources := []netip.Prefix{
+			netip.PrefixFrom(netip.MustParseAddr("10.20.0.3"), 32),
+			netip.PrefixFrom(netip.MustParseAddr("10.20.0.4"), 32),
+			netip.PrefixFrom(netip.MustParseAddr("10.20.0.5"), 32),
 		}
+		port := &fw.Port{Values: []uint16{8080}}
+		multi, err := manager.AddFilterRule(nil, sources, fw.Network{}, "tcp", nil, port, fw.ActionAccept)
+		require.NoError(t, err, "failed to add multi-source rule")
+		require.NotNil(t, multi, "multi-source rule must produce one iptables rule")
+		sets := findSets(multi.(*Rule).specs)
+		require.Len(t, sets, 1, "multi-source rule must reference exactly one ipset")
+
+		require.NoError(t, manager.DeleteFilterRule(multi))
 	})
 
 	t.Run("reset check", func(t *testing.T) {
@@ -281,7 +289,7 @@ func TestIptablesCreatePerformance(t *testing.T) {
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
 				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
-				_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionAccept, "")
+				_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", nil, port, fw.ActionAccept)
 
 				require.NoError(t, err, "failed to add rule")
 			}

client/firewall/iptables/router_linux_test.go

@@ -1,4 +1,4 @@
-//go:build !android
+//go:build !android && privileged
 
 package iptables
 
@@ -31,7 +31,7 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
 	iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 	require.NoError(t, err, "failed to init iptables client")
 
-	manager, err := newRouter(iptablesClient, ifaceMock, iface.DefaultMTU)
+	manager, err := newFamily(iptablesClient, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, err, "should return a valid iptables manager")
 	require.NoError(t, manager.init(nil))
 
@@ -52,12 +52,12 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
 	// 11. MSS clamping rule for outbound traffic
 	require.Len(t, manager.rules, 11, "should have created rules map")
 
-	exists, err := manager.iptablesClient.Exists(tableNat, chainPOSTROUTING, "-j", chainRTNAT)
-	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainPOSTROUTING)
+	exists, err := manager.iptablesClient.Exists(tableNat, chainPostrouting, "-j", chainRTNAT)
+	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainPostrouting)
 	require.True(t, exists, "postrouting jump rule should exist")
 
-	exists, err = manager.iptablesClient.Exists(tableMangle, chainPREROUTING, "-j", chainRTPRE)
-	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainPREROUTING)
+	exists, err = manager.iptablesClient.Exists(tableMangle, chainPrerouting, "-j", chainRTPre)
+	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainPrerouting)
 	require.True(t, exists, "prerouting jump rule should exist")
 
 	pair := firewall.RouterPair{
@@ -84,7 +84,7 @@ func TestIptablesManager_AddNatRule(t *testing.T) {
 			iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 			require.NoError(t, err, "failed to init iptables client")
 
-			manager, err := newRouter(iptablesClient, ifaceMock, iface.DefaultMTU)
+			manager, err := newFamily(iptablesClient, ifaceMock, iface.DefaultMTU)
 			require.NoError(t, err, "shouldn't return error")
 			require.NoError(t, manager.init(nil))
 
@@ -95,7 +95,7 @@ func TestIptablesManager_AddNatRule(t *testing.T) {
 			err = manager.AddNatRule(testCase.InputPair)
 			require.NoError(t, err, "marking rule should be inserted")
 
-			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
+			natRuleKey := testCase.InputPair.GenKey(firewall.NatFormat)
 			markingRule := []string{
 				"-i", ifaceMock.Name(),
 				"-m", "conntrack",
@@ -106,8 +106,8 @@ func TestIptablesManager_AddNatRule(t *testing.T) {
 				fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasquerade),
 			}
 
-			exists, err := iptablesClient.Exists(tableMangle, chainRTPRE, markingRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPRE)
+			exists, err := iptablesClient.Exists(tableMangle, chainRTPre, markingRule...)
+			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPre)
 			if testCase.InputPair.Masquerade {
 				require.True(t, exists, "marking rule should be created")
 				foundRule, found := manager.rules[natRuleKey]
@@ -121,7 +121,7 @@ func TestIptablesManager_AddNatRule(t *testing.T) {
 
 			// Check inverse rule
 			inversePair := firewall.GetInversePair(testCase.InputPair)
-			inverseRuleKey := firewall.GenKey(firewall.NatFormat, inversePair)
+			inverseRuleKey := inversePair.GenKey(firewall.NatFormat)
 			inverseMarkingRule := []string{
 				"!", "-i", ifaceMock.Name(),
 				"-m", "conntrack",
@@ -132,8 +132,8 @@ func TestIptablesManager_AddNatRule(t *testing.T) {
 				fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasqueradeReturn),
 			}
 
-			exists, err = iptablesClient.Exists(tableMangle, chainRTPRE, inverseMarkingRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPRE)
+			exists, err = iptablesClient.Exists(tableMangle, chainRTPre, inverseMarkingRule...)
+			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPre)
 			if testCase.InputPair.Masquerade {
 				require.True(t, exists, "inverse marking rule should be created")
 				foundRule, found := manager.rules[inverseRuleKey]
@@ -157,7 +157,7 @@ func TestIptablesManager_RemoveNatRule(t *testing.T) {
 		t.Run(testCase.Name, func(t *testing.T) {
 			iptablesClient, _ := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 
-			manager, err := newRouter(iptablesClient, ifaceMock, iface.DefaultMTU)
+			manager, err := newFamily(iptablesClient, ifaceMock, iface.DefaultMTU)
 			require.NoError(t, err, "shouldn't return error")
 			require.NoError(t, manager.init(nil))
 			defer func() {
@@ -170,7 +170,7 @@ func TestIptablesManager_RemoveNatRule(t *testing.T) {
 			err = manager.RemoveNatRule(testCase.InputPair)
 			require.NoError(t, err, "shouldn't return error")
 
-			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
+			natRuleKey := testCase.InputPair.GenKey(firewall.NatFormat)
 			markingRule := []string{
 				"-i", ifaceMock.Name(),
 				"-m", "conntrack",
@@ -181,8 +181,8 @@ func TestIptablesManager_RemoveNatRule(t *testing.T) {
 				fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasquerade),
 			}
 
-			exists, err := iptablesClient.Exists(tableMangle, chainRTPRE, markingRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPRE)
+			exists, err := iptablesClient.Exists(tableMangle, chainRTPre, markingRule...)
+			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPre)
 			require.False(t, exists, "marking rule should not exist")
 
 			_, found := manager.rules[natRuleKey]
@@ -190,7 +190,7 @@ func TestIptablesManager_RemoveNatRule(t *testing.T) {
 
 			// Check inverse rule removal
 			inversePair := firewall.GetInversePair(testCase.InputPair)
-			inverseRuleKey := firewall.GenKey(firewall.NatFormat, inversePair)
+			inverseRuleKey := inversePair.GenKey(firewall.NatFormat)
 			inverseMarkingRule := []string{
 				"!", "-i", ifaceMock.Name(),
 				"-m", "conntrack",
@@ -201,8 +201,8 @@ func TestIptablesManager_RemoveNatRule(t *testing.T) {
 				fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasqueradeReturn),
 			}
 
-			exists, err = iptablesClient.Exists(tableMangle, chainRTPRE, inverseMarkingRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPRE)
+			exists, err = iptablesClient.Exists(tableMangle, chainRTPre, inverseMarkingRule...)
+			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableMangle, chainRTPre)
 			require.False(t, exists, "inverse marking rule should not exist")
 
 			_, found = manager.rules[inverseRuleKey]
@@ -219,13 +219,13 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 	iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 	require.NoError(t, err, "Failed to create iptables client")
 
-	r, err := newRouter(iptablesClient, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err, "Failed to create router manager")
+	r, err := newFamily(iptablesClient, ifaceMock, iface.DefaultMTU)
+	require.NoError(t, err, "Failed to create family manager")
 	require.NoError(t, r.init(nil))
 
 	defer func() {
 		err := r.Reset()
-		require.NoError(t, err, "Failed to reset router")
+		require.NoError(t, err, "Failed to reset family")
 	}()
 
 	tests := []struct {
@@ -334,62 +334,30 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			ruleKey, err := r.AddRouteFiltering(nil, tt.sources, firewall.Network{Prefix: tt.destination}, tt.proto, tt.sPort, tt.dPort, tt.action)
-			require.NoError(t, err, "AddRouteFiltering failed")
+			ruleKey, err := r.AddFilterRule(nil, tt.sources, firewall.Network{Prefix: tt.destination}, tt.proto, tt.sPort, tt.dPort, tt.action)
+			require.NoError(t, err, "AddFilterRule failed")
 
-			// Check if the rule is in the internal map
-			rule, ok := r.rules[ruleKey.ID()]
-			assert.True(t, ok, "Rule not found in internal map")
+			stored, ok := r.filters[ruleKey.ID()]
+			require.True(t, ok, "rule not stored in filters")
+			t.Logf("Internal rule: %v", stored.specs)
 
-			// Log the internal rule
-			t.Logf("Internal rule: %v", rule)
-
-			// Check if the rule exists in iptables
-			exists, err := iptablesClient.Exists(tableFilter, chainRTFWDIN, rule...)
+			exists, err := iptablesClient.Exists(tableFilter, chainRTFwdIn, stored.specs...)
 			assert.NoError(t, err, "Failed to check rule existence")
 			assert.True(t, exists, "Rule not found in iptables")
 
-			var source firewall.Network
-			if len(tt.sources) > 1 {
-				source.Set = firewall.NewPrefixSet(tt.sources)
-			} else if len(tt.sources) > 0 {
-				source.Prefix = tt.sources[0]
-			}
-			// Verify rule content
-			params := routeFilteringRuleParams{
-				Source:      source,
-				Destination: firewall.Network{Prefix: tt.destination},
-				Proto:       tt.proto,
-				SPort:       tt.sPort,
-				DPort:       tt.dPort,
-				Action:      tt.action,
-			}
-
-			expectedRule, err := r.genRouteRuleSpec(params, nil)
-			require.NoError(t, err, "Failed to generate expected rule spec")
-
 			if tt.expectSet {
 				setName := firewall.NewPrefixSet(tt.sources).HashedName()
-				expectedRule, err = r.genRouteRuleSpec(params, nil)
-				require.NoError(t, err, "Failed to generate expected rule spec with set")
-
-				// Check if the set was created
 				_, exists := r.ipsetCounter.Get(setName)
 				assert.True(t, exists, "IPSet not created")
+				assert.NotEmpty(t, findSets(stored.specs), "Rule should reference an ipset")
 			}
 
-			assert.Equal(t, expectedRule, rule, "Rule content mismatch")
-
-			// Clean up
-			err = r.DeleteRouteRule(ruleKey)
-			require.NoError(t, err, "Failed to delete rule")
+			require.NoError(t, r.DeleteFilterRule(ruleKey), "Failed to delete rule")
 		})
 	}
 }
 
 func TestFindSetNameInRule(t *testing.T) {
-	r := &router{}
-
 	testCases := []struct {
 		name     string
 		rule     []string
@@ -430,7 +398,7 @@ func TestFindSetNameInRule(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			result := r.findSets(tc.rule)
+			result := findSets(tc.rule)
 
 			if len(result) != len(tc.expected) {
 				t.Errorf("Expected %d sets, got %d. Sets found: %v", len(tc.expected), len(result), result)

client/firewall/iptables/routing_linux.go

@@ -0,0 +1,263 @@
+//go:build !android
+
+package iptables
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbnet "github.com/netbirdio/netbird/client/net"
+)
+
+func (r *family) AddNatRule(pair firewall.RouterPair) error {
+	if r.legacyManagement {
+		log.Warnf("This peer is connected to a NetBird Management service with an older version. Allowing all traffic for %s", pair.Destination)
+		if err := r.addLegacyRouteRule(pair); err != nil {
+			return fmt.Errorf("add legacy routing rule: %w", err)
+		}
+	}
+
+	if pair.Masquerade {
+		if err := r.addNatRule(pair); err != nil {
+			return fmt.Errorf("add nat rule: %w", err)
+		}
+
+		if err := r.addNatRule(firewall.GetInversePair(pair)); err != nil {
+			return fmt.Errorf("add inverse nat rule: %w", err)
+		}
+	}
+
+	r.updateState()
+
+	return nil
+}
+
+// RemoveNatRule removes an iptables rule pair from forwarding and nat chains
+func (r *family) RemoveNatRule(pair firewall.RouterPair) error {
+	if pair.Masquerade {
+		if err := r.removeNatRule(pair); err != nil {
+			return fmt.Errorf("remove nat rule: %w", err)
+		}
+
+		if err := r.removeNatRule(firewall.GetInversePair(pair)); err != nil {
+			return fmt.Errorf("remove inverse nat rule: %w", err)
+		}
+	}
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		return fmt.Errorf("remove legacy routing rule: %w", err)
+	}
+
+	r.updateState()
+
+	return nil
+}
+
+// addLegacyRouteRule adds a legacy routing rule for mgmt servers pre route acls
+func (r *family) addLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.ForwardingFormat)
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		return err
+	}
+
+	rule := []string{"-s", pair.Source.String(), "-d", pair.Destination.String(), "-j", "ACCEPT"}
+	if err := r.iptablesClient.Append(tableFilter, chainRTFwdIn, rule...); err != nil {
+		return fmt.Errorf("add legacy forwarding rule %s -> %s: %w", pair.Source, pair.Destination, err)
+	}
+
+	r.rules[ruleID] = rule
+
+	return nil
+}
+
+func (r *family) removeLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.ForwardingFormat)
+
+	if rule, exists := r.rules[ruleID]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainRTFwdIn, rule...); err != nil {
+			return fmt.Errorf("remove legacy forwarding rule %s -> %s: %w", pair.Source, pair.Destination, err)
+		}
+		delete(r.rules, ruleID)
+
+		if err := r.decrementSetCounter(rule); err != nil {
+			return fmt.Errorf("decrement ipset counter: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// GetLegacyManagement returns the current legacy management mode
+func (r *family) GetLegacyManagement() bool {
+	return r.legacyManagement
+}
+
+// SetLegacyManagement sets the route manager to use legacy management mode
+func (r *family) SetLegacyManagement(isLegacy bool) {
+	r.legacyManagement = isLegacy
+}
+
+// RemoveAllLegacyRouteRules removes all legacy routing rules for mgmt servers pre route acls
+func (r *family) RemoveAllLegacyRouteRules() error {
+	var merr *multierror.Error
+	for k, rule := range r.rules {
+		if !strings.HasPrefix(string(k), firewall.ForwardingFormatPrefix) {
+			continue
+		}
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainRTFwdIn, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove legacy forwarding rule: %w", err))
+		} else {
+			delete(r.rules, k)
+		}
+	}
+
+	r.updateState()
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) addPostroutingRules() error {
+	// First rule for outbound masquerade
+	rule1 := []string{
+		"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasquerade),
+		"!", "-o", "lo",
+		"-j", "MASQUERADE",
+	}
+	if err := r.iptablesClient.Append(tableNat, chainRTNAT, rule1...); err != nil {
+		return fmt.Errorf("add outbound masquerade rule: %w", err)
+	}
+	r.rules["static-nat-outbound"] = rule1
+
+	// Second rule for return traffic masquerade
+	rule2 := []string{
+		"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkMasqueradeReturn),
+		"-o", r.wgIface.Name(),
+		"-j", "MASQUERADE",
+	}
+	if err := r.iptablesClient.Append(tableNat, chainRTNAT, rule2...); err != nil {
+		return fmt.Errorf("add return masquerade rule: %w", err)
+	}
+	r.rules["static-nat-return"] = rule2
+
+	return nil
+}
+
+// addMSSClampingRules adds MSS clamping rules to prevent fragmentation for forwarded traffic.
+func (r *family) addMSSClampingRules() error {
+	overhead := uint16(ipv4TCPHeaderSize)
+	if r.v6 {
+		overhead = ipv6TCPHeaderSize
+	}
+	mss := r.mtu - overhead
+
+	// Add jump rule from FORWARD chain in mangle table to our custom chain
+	jumpRule := jumpRuleSpec(chainRTMSSClamp)
+	if err := r.iptablesClient.Insert(tableMangle, chainForward, 1, jumpRule...); err != nil {
+		return fmt.Errorf("add jump to MSS clamp chain: %w", err)
+	}
+	r.rules[jumpMSSClamp] = jumpRule
+
+	ruleOut := []string{
+		"-o", r.wgIface.Name(),
+		"-p", "tcp",
+		"--tcp-flags", "SYN,RST", "SYN",
+		"-j", "TCPMSS",
+		"--set-mss", fmt.Sprintf("%d", mss),
+	}
+	if err := r.iptablesClient.Append(tableMangle, chainRTMSSClamp, ruleOut...); err != nil {
+		return fmt.Errorf("add outbound MSS clamp rule: %w", err)
+	}
+	r.rules["mss-clamp-out"] = ruleOut
+
+	return nil
+}
+
+func (r *family) insertEstablishedRule(chain string) error {
+	establishedRule := getConntrackEstablished()
+
+	err := r.iptablesClient.Insert(tableFilter, chain, 1, establishedRule...)
+	if err != nil {
+		return fmt.Errorf("insert established rule: %w", err)
+	}
+
+	ruleID := firewall.RuleID("established-" + chain)
+	r.rules[ruleID] = establishedRule
+
+	return nil
+}
+
+func (r *family) addNatRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.NatFormat)
+
+	if rule, exists := r.rules[ruleID]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainRTPre, rule...); err != nil {
+			return fmt.Errorf("remove existing marking rule for %s: %w", pair.Destination, err)
+		}
+		delete(r.rules, ruleID)
+	}
+
+	markValue := nbnet.PreroutingFwmarkMasquerade
+	if pair.Inverse {
+		markValue = nbnet.PreroutingFwmarkMasqueradeReturn
+	}
+
+	rule := []string{"-i", r.wgIface.Name()}
+	if pair.Inverse {
+		rule = []string{"!", "-i", r.wgIface.Name()}
+	}
+
+	rule = append(rule,
+		"-m", "conntrack",
+		"--ctstate", "NEW",
+	)
+	sourceExp, err := r.applyNetwork("-s", pair.Source, nil)
+	if err != nil {
+		return fmt.Errorf("apply network -s: %w", err)
+	}
+	destExp, err := r.applyNetwork("-d", pair.Destination, nil)
+	if err != nil {
+		return fmt.Errorf("apply network -d: %w", err)
+	}
+
+	rule = append(rule, sourceExp...)
+	rule = append(rule, destExp...)
+	rule = append(rule,
+		"-j", "MARK", "--set-mark", fmt.Sprintf("%#x", markValue),
+	)
+
+	// Ensure nat rules come first, so the mark can be overwritten.
+	// Currently overwritten by the dst-type LOCAL rules for redirected traffic.
+	if err := r.iptablesClient.Insert(tableMangle, chainRTPre, 1, rule...); err != nil {
+		r.dropSourceMatch(rule)
+		return fmt.Errorf("add marking rule for %s: %w", pair.Destination, err)
+	}
+
+	r.rules[ruleID] = rule
+
+	return nil
+}
+
+func (r *family) removeNatRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.NatFormat)
+
+	if rule, exists := r.rules[ruleID]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableMangle, chainRTPre, rule...); err != nil {
+			return fmt.Errorf("remove marking rule for %s: %w", pair.Destination, err)
+		}
+		delete(r.rules, ruleID)
+
+		if err := r.decrementSetCounter(rule); err != nil {
+			return fmt.Errorf("decrement ipset counter: %w", err)
+		}
+	} else {
+		log.Debugf("marking rule %s not found", ruleID)
+	}
+
+	return nil
+}

client/firewall/iptables/rule.go

@@ -1,18 +1,20 @@
 package iptables
 
-// Rule to handle management of rules
-type Rule struct {
-	ruleID    string
-	ipsetName string
+import "github.com/netbirdio/netbird/client/firewall/manager"
 
+// Rule to handle management of rules. Source set membership (when the
+// rule was built against a shared hash:net ipset) is encoded in specs;
+// DeleteFilterRule recovers it via findSets so the refcounter can drop
+// the right reference.
+type Rule struct {
+	id          manager.RuleID
 	specs       []string
 	mangleSpecs []string
-	ip          string
 	chain       string
 	v6          bool
 }
 
-// GetRuleID returns the rule id
-func (r *Rule) ID() string {
-	return r.ruleID
+// ID returns the rule id
+func (r *Rule) ID() manager.RuleID {
+	return r.id
 }

client/firewall/iptables/rulestore_linux.go

@@ -1,103 +0,0 @@
-package iptables
-
-import "encoding/json"
-
-type ipList struct {
-	ips map[string]struct{}
-}
-
-func newIpList(ip string) *ipList {
-	ips := make(map[string]struct{})
-	ips[ip] = struct{}{}
-
-	return &ipList{
-		ips: ips,
-	}
-}
-
-func (s *ipList) addIP(ip string) {
-	s.ips[ip] = struct{}{}
-}
-
-// MarshalJSON implements json.Marshaler
-func (s *ipList) MarshalJSON() ([]byte, error) {
-	return json.Marshal(struct {
-		IPs map[string]struct{} `json:"ips"`
-	}{
-		IPs: s.ips,
-	})
-}
-
-// UnmarshalJSON implements json.Unmarshaler
-func (s *ipList) UnmarshalJSON(data []byte) error {
-	temp := struct {
-		IPs map[string]struct{} `json:"ips"`
-	}{}
-	if err := json.Unmarshal(data, &temp); err != nil {
-		return err
-	}
-	s.ips = temp.IPs
-
-	if temp.IPs == nil {
-		temp.IPs = make(map[string]struct{})
-	}
-
-	return nil
-}
-
-type ipsetStore struct {
-	ipsets map[string]*ipList
-}
-
-func newIpsetStore() *ipsetStore {
-	return &ipsetStore{
-		ipsets: make(map[string]*ipList),
-	}
-}
-
-func (s *ipsetStore) ipset(ipsetName string) (*ipList, bool) {
-	r, ok := s.ipsets[ipsetName]
-	return r, ok
-}
-
-func (s *ipsetStore) addIpList(ipsetName string, list *ipList) {
-	s.ipsets[ipsetName] = list
-}
-
-func (s *ipsetStore) deleteIpset(ipsetName string) {
-	delete(s.ipsets, ipsetName)
-}
-
-func (s *ipsetStore) ipsetNames() []string {
-	names := make([]string, 0, len(s.ipsets))
-	for name := range s.ipsets {
-		names = append(names, name)
-	}
-	return names
-}
-
-// MarshalJSON implements json.Marshaler
-func (s *ipsetStore) MarshalJSON() ([]byte, error) {
-	return json.Marshal(struct {
-		IPSets map[string]*ipList `json:"ipsets"`
-	}{
-		IPSets: s.ipsets,
-	})
-}
-
-// UnmarshalJSON implements json.Unmarshaler
-func (s *ipsetStore) UnmarshalJSON(data []byte) error {
-	temp := struct {
-		IPSets map[string]*ipList `json:"ipsets"`
-	}{}
-	if err := json.Unmarshal(data, &temp); err != nil {
-		return err
-	}
-	s.ipsets = temp.IPSets
-
-	if temp.IPSets == nil {
-		temp.IPSets = make(map[string]*ipList)
-	}
-
-	return nil
-}

client/firewall/iptables/state_linux.go

@@ -29,17 +29,13 @@ type ShutdownState struct {
 
 	InterfaceState *InterfaceState `json:"interface_state,omitempty"`
 
-	RouteRules        routeRules    `json:"route_rules,omitempty"`
-	RouteIPsetCounter *ipsetCounter `json:"route_ipset_counter,omitempty"`
-
-	ACLEntries    aclEntries  `json:"acl_entries,omitempty"`
-	ACLIPsetStore *ipsetStore `json:"acl_ipset_store,omitempty"`
-
-	// IPv6 counterparts
+	RouteRules         routeRules    `json:"route_rules,omitempty"`
 	RouteRules6        routeRules    `json:"route_rules_v6,omitempty"`
+	RouteIPsetCounter  *ipsetCounter `json:"route_ipset_counter,omitempty"`
 	RouteIPsetCounter6 *ipsetCounter `json:"route_ipset_counter_v6,omitempty"`
-	ACLEntries6        aclEntries    `json:"acl_entries_v6,omitempty"`
-	ACLIPsetStore6     *ipsetStore   `json:"acl_ipset_store_v6,omitempty"`
+
+	ACLEntries  aclEntries `json:"acl_entries,omitempty"`
+	ACLEntries6 aclEntries `json:"acl_entries_v6,omitempty"`
 }
 
 func (s *ShutdownState) Name() string {
@@ -57,17 +53,14 @@ func (s *ShutdownState) Cleanup() error {
 	}
 
 	if s.RouteRules != nil {
-		ipt.router.rules = s.RouteRules
+		ipt.family4.rules = s.RouteRules
 	}
 	if s.RouteIPsetCounter != nil {
-		ipt.router.ipsetCounter.LoadData(s.RouteIPsetCounter)
+		ipt.family4.ipsetCounter.LoadData(s.RouteIPsetCounter)
 	}
 
 	if s.ACLEntries != nil {
-		ipt.aclMgr.entries = s.ACLEntries
-	}
-	if s.ACLIPsetStore != nil {
-		ipt.aclMgr.ipsetStore = s.ACLIPsetStore
+		ipt.family4.entries = s.ACLEntries
 	}
 
 	// Clean up v6 state even if the current run has no IPv6.
@@ -79,16 +72,13 @@ func (s *ShutdownState) Cleanup() error {
 	}
 	if ipt.hasIPv6() {
 		if s.RouteRules6 != nil {
-			ipt.router6.rules = s.RouteRules6
+			ipt.family6.rules = s.RouteRules6
 		}
 		if s.RouteIPsetCounter6 != nil {
-			ipt.router6.ipsetCounter.LoadData(s.RouteIPsetCounter6)
+			ipt.family6.ipsetCounter.LoadData(s.RouteIPsetCounter6)
 		}
 		if s.ACLEntries6 != nil {
-			ipt.aclMgr6.entries = s.ACLEntries6
-		}
-		if s.ACLIPsetStore6 != nil {
-			ipt.aclMgr6.ipsetStore = s.ACLIPsetStore6
+			ipt.family6.entries = s.ACLEntries6
 		}
 	}
 

client/firewall/iptables/testhelpers_linux_test.go

@@ -0,0 +1,27 @@
+//go:build privileged
+
+package iptables
+
+import (
+	"fmt"
+	"net"
+	"net/netip"
+)
+
+func pfx(ip net.IP) []netip.Prefix {
+	if ip == nil {
+		return []netip.Prefix{netip.PrefixFrom(netip.IPv4Unspecified(), 0)}
+	}
+	if ip.IsUnspecified() {
+		if ip.To4() != nil {
+			return []netip.Prefix{netip.PrefixFrom(netip.IPv4Unspecified(), 0)}
+		}
+		return []netip.Prefix{netip.PrefixFrom(netip.IPv6Unspecified(), 0)}
+	}
+	a, ok := netip.AddrFromSlice(ip)
+	if !ok {
+		panic(fmt.Sprintf("invalid IP length: %d", len(ip)))
+	}
+	a = a.Unmap()
+	return []netip.Prefix{netip.PrefixFrom(a, a.BitLen())}
+}

client/firewall/manager/firewall.go

@@ -3,7 +3,6 @@ package manager
 import (
 	"errors"
 	"fmt"
-	"net"
 	"net/netip"
 	"sort"
 
@@ -16,6 +15,12 @@ import (
 // method but the IPv6 firewall components were not initialized.
 var ErrIPv6NotInitialized = errors.New("IPv6 firewall not initialized")
 
+// ErrNoSources is returned when AddFilterRule is called with an empty
+// source list. "Match any source" must be expressed explicitly with a
+// /0 prefix; an empty list is a caller error and is rejected rather
+// than silently widening the rule to every source.
+var ErrNoSources = errors.New("rule has no sources")
+
 const (
 	ForwardingFormatPrefix = "netbird-fwd-"
 	ForwardingFormat       = "netbird-fwd-%s-%t"
@@ -23,13 +28,18 @@ const (
 	NatFormat              = "netbird-nat-%s-%t"
 )
 
+// RuleID identifies a firewall rule. It is a typed string so the
+// compiler catches accidental mixing with arbitrary string keys. It is
+// only an identifier and does not implement Rule.
+type RuleID string
+
 // Rule abstraction should be implemented by each firewall manager
 //
 // Each firewall type for different OS can use different type
 // of the properties to hold data of the created rule
 type Rule interface {
 	// ID returns the rule id
-	ID() string
+	ID() RuleID
 }
 
 // RuleDirection is the traffic direction which a rule is applied
@@ -91,6 +101,13 @@ func (d Network) IsPrefix() bool {
 	return d.Prefix.IsValid()
 }
 
+// IsZero returns true if the network designates no destination, i.e. it
+// is the zero value. A zero Network is the peer-rule sentinel; a non-zero
+// one carries a prefix or set destination.
+func (d Network) IsZero() bool {
+	return !d.IsPrefix() && !d.IsSet()
+}
+
 // Manager is the high level abstraction of a firewall manager
 //
 // It declares methods which handle actions required by the
@@ -98,46 +115,42 @@ func (d Network) IsPrefix() bool {
 type Manager interface {
 	Init(stateManager *statemanager.Manager) error
 
-	// AllowNetbird allows netbird interface traffic
-	AllowNetbird() error
-
-	// AddPeerFiltering adds a rule to the firewall
+	// AddFilterRule adds a packet-filtering rule to the firewall.
 	//
-	// If comment argument is empty firewall manager should set
-	// rule ID as comment for the rule
+	// If destination is the zero Network, the rule applies to traffic
+	// inbound to this node, i.e. peer ACL semantics, installed in
+	// the kernel's input chain. If destination is set (prefix or
+	// set), the rule applies to forwarded traffic with that
+	// destination, route ACL semantics, installed in the forward
+	// chain.
 	//
-	// Note: Callers should call Flush() after adding rules to ensure
-	// they are applied to the kernel and rule handles are refreshed.
-	AddPeerFiltering(
+	// sources must be a single address family; the caller splits mixed
+	// families and calls once per family. "Match any source" must be
+	// expressed with an explicit /0 prefix; an empty sources list is
+	// rejected with ErrNoSources so a zeroed list can never widen a
+	// rule to every source.
+	//
+	// Note: callers should call Flush() after adding rules.
+	AddFilterRule(
 		id []byte,
-		ip net.IP,
+		sources []netip.Prefix,
+		destination Network,
 		proto Protocol,
 		sPort *Port,
 		dPort *Port,
 		action Action,
-		ipsetName string,
-	) ([]Rule, error)
+	) (Rule, error)
 
-	// DeletePeerRule from the firewall by rule definition
-	DeletePeerRule(rule Rule) error
+	// DeleteFilterRule removes a filtering rule previously added via
+	// AddFilterRule. The rule's own type identifies whether it lives
+	// in the peer (input) or route (forward) path.
+	DeleteFilterRule(rule Rule) error
 
 	// IsServerRouteSupported returns true if the firewall supports server side routing operations
 	IsServerRouteSupported() bool
 
 	IsStateful() bool
 
-	AddRouteFiltering(
-		id []byte,
-		sources []netip.Prefix,
-		destination Network,
-		proto Protocol,
-		sPort, dPort *Port,
-		action Action,
-	) (Rule, error)
-
-	// DeleteRouteRule deletes a routing rule
-	DeleteRouteRule(rule Rule) error
-
 	// AddNatRule inserts a routing NAT rule
 	AddNatRule(pair RouterPair) error
 
@@ -185,8 +198,9 @@ type Manager interface {
 	SetupEBPFProxyNoTrack(proxyPort, wgPort uint16) error
 }
 
-func GenKey(format string, pair RouterPair) string {
-	return fmt.Sprintf(format, pair.ID, pair.Inverse)
+// GenKey builds the rule id for this pair from the given format.
+func (p RouterPair) GenKey(format string) RuleID {
+	return RuleID(fmt.Sprintf(format, p.ID, p.Inverse))
 }
 
 // LegacyManager defines the interface for legacy management operations
@@ -242,6 +256,20 @@ func MergeIPRanges(prefixes []netip.Prefix) []netip.Prefix {
 	return merged
 }
 
+// UnmapPrefix normalizes a v4-mapped v6 prefix (::ffff:a.b.c.d) to its
+// plain v4 form, shifting the prefix length out of the 96-bit mapped
+// range. Other prefixes are returned unchanged. Keeping prefixes
+// unmapped ensures v4 rules match consistently and the match builders
+// read the correct address length.
+func UnmapPrefix(p netip.Prefix) netip.Prefix {
+	addr := p.Addr()
+	if !addr.Is4In6() {
+		return p
+	}
+	bits := max(p.Bits()-96, 0)
+	return netip.PrefixFrom(addr.Unmap(), bits)
+}
+
 // SortPrefixes sorts the given slice of netip.Prefix in place.
 // It sorts first by IP address, then by prefix length (most specific to least specific).
 func SortPrefixes(prefixes []netip.Prefix) {

client/firewall/manager/forward_rule.go

@@ -13,13 +13,13 @@ type ForwardRule struct {
 	TranslatedPort    Port
 }
 
-func (r ForwardRule) ID() string {
+func (r ForwardRule) ID() RuleID {
 	id := fmt.Sprintf("%s;%s;%s;%s",
 		r.Protocol,
 		r.DestinationPort.String(),
 		r.TranslatedAddress.String(),
 		r.TranslatedPort.String())
-	return id
+	return RuleID(id)
 }
 
 func (r ForwardRule) String() string {

client/firewall/manager/set.go

@@ -40,7 +40,7 @@ func (h Set) Comment() string {
 
 // NewPrefixSet generates a unique name for an ipset based on the given prefixes.
 func NewPrefixSet(prefixes []netip.Prefix) Set {
-	// sort for consistent naming
+	prefixes = slices.Clone(prefixes)
 	SortPrefixes(prefixes)
 
 	hash := sha256.New()

client/firewall/nftables/acl_linux.go

@@ -1,713 +0,0 @@
-package nftables
-
-import (
-	"bytes"
-	"fmt"
-	"net"
-	"slices"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/google/nftables"
-	"github.com/google/nftables/binaryutil"
-	"github.com/google/nftables/expr"
-	log "github.com/sirupsen/logrus"
-	"golang.org/x/sys/unix"
-
-	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	nbnet "github.com/netbirdio/netbird/client/net"
-)
-
-const (
-
-	// rules chains contains the effective ACL rules
-	chainNameInputRules = "netbird-acl-input-rules"
-
-	// filter chains contains the rules that jump to the rules chains
-	chainNameInputFilter       = "netbird-acl-input-filter"
-	chainNameForwardFilter     = "netbird-acl-forward-filter"
-	chainNameManglePrerouting  = "netbird-mangle-prerouting"
-	chainNameManglePostrouting = "netbird-mangle-postrouting"
-)
-
-const flushError = "flush: %w"
-
-type AclManager struct {
-	rConn              *nftables.Conn
-	sConn              *nftables.Conn
-	wgIface            iFaceMapper
-	routingFwChainName string
-	af                 addrFamily
-
-	workTable       *nftables.Table
-	chainInputRules *nftables.Chain
-	chainPrerouting *nftables.Chain
-
-	ipsetStore *ipsetStore
-	rules      map[string]*Rule
-}
-
-func newAclManager(table *nftables.Table, wgIface iFaceMapper, routingFwChainName string) (*AclManager, error) {
-	// sConn is used for creating sets and adding/removing elements from them
-	// it's differ then rConn (which does create new conn for each flush operation)
-	// and is permanent. Using same connection for both type of operations
-	// overloads netlink with high amount of rules ( > 10000)
-	sConn, err := nftables.New(nftables.AsLasting())
-	if err != nil {
-		return nil, fmt.Errorf("create nf conn: %w", err)
-	}
-
-	return &AclManager{
-		rConn:              &nftables.Conn{},
-		sConn:              sConn,
-		wgIface:            wgIface,
-		workTable:          table,
-		routingFwChainName: routingFwChainName,
-		af:                 familyForAddr(table.Family == nftables.TableFamilyIPv4),
-
-		ipsetStore: newIpsetStore(),
-		rules:      make(map[string]*Rule),
-	}, nil
-}
-
-func (m *AclManager) init(workTable *nftables.Table) error {
-	m.workTable = workTable
-	return m.createDefaultChains()
-}
-
-// AddPeerFiltering rule to the firewall
-//
-// If comment argument is empty firewall manager should set
-// rule ID as comment for the rule
-func (m *AclManager) AddPeerFiltering(
-	id []byte,
-	ip net.IP,
-	proto firewall.Protocol,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	action firewall.Action,
-	ipsetName string,
-) ([]firewall.Rule, error) {
-	var ipset *nftables.Set
-	if ipsetName != "" {
-		var err error
-		ipset, err = m.addIpToSet(ipsetName, ip)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	newRules := make([]firewall.Rule, 0, 2)
-	ioRule, err := m.addIOFiltering(ip, proto, sPort, dPort, action, ipset)
-	if err != nil {
-		return nil, err
-	}
-
-	newRules = append(newRules, ioRule)
-	return newRules, nil
-}
-
-// DeletePeerRule from the firewall by rule definition
-func (m *AclManager) DeletePeerRule(rule firewall.Rule) error {
-	r, ok := rule.(*Rule)
-	if !ok {
-		return fmt.Errorf("invalid rule type")
-	}
-
-	if r.nftSet == nil {
-		if err := m.rConn.DelRule(r.nftRule); err != nil {
-			log.Errorf("failed to delete rule: %v", err)
-		}
-		if r.mangleRule != nil {
-			if err := m.rConn.DelRule(r.mangleRule); err != nil {
-				log.Errorf("failed to delete mangle rule: %v", err)
-			}
-		}
-		delete(m.rules, r.ID())
-		return m.rConn.Flush()
-	}
-
-	ips, ok := m.ipsetStore.ips(r.nftSet.Name)
-	if !ok {
-		if err := m.rConn.DelRule(r.nftRule); err != nil {
-			log.Errorf("failed to delete rule: %v", err)
-		}
-		if r.mangleRule != nil {
-			if err := m.rConn.DelRule(r.mangleRule); err != nil {
-				log.Errorf("failed to delete mangle rule: %v", err)
-			}
-		}
-		delete(m.rules, r.ID())
-		return m.rConn.Flush()
-	}
-
-	if _, ok := ips[r.ip.String()]; ok {
-		err := m.sConn.SetDeleteElements(r.nftSet, []nftables.SetElement{{Key: ipToBytes(r.ip, m.af)}})
-		if err != nil {
-			log.Errorf("delete elements for set %q: %v", r.nftSet.Name, err)
-		}
-		if err := m.sConn.Flush(); err != nil {
-			log.Debugf("flush error of set delete element, %s", r.nftSet.Name)
-			return err
-		}
-		m.ipsetStore.DeleteIpFromSet(r.nftSet.Name, r.ip)
-	}
-
-	// if after delete, set still contains other IPs,
-	// no need to delete firewall rule and we should exit here
-	if len(ips) > 0 {
-		return nil
-	}
-
-	if err := m.rConn.DelRule(r.nftRule); err != nil {
-		log.Errorf("failed to delete rule: %v", err)
-	}
-	if r.mangleRule != nil {
-		if err := m.rConn.DelRule(r.mangleRule); err != nil {
-			log.Errorf("failed to delete mangle rule: %v", err)
-		}
-	}
-
-	if err := m.rConn.Flush(); err != nil {
-		return err
-	}
-
-	delete(m.rules, r.ID())
-	m.ipsetStore.DeleteReferenceFromIpSet(r.nftSet.Name)
-
-	if m.ipsetStore.HasReferenceToSet(r.nftSet.Name) {
-		return nil
-	}
-
-	// we delete last IP from the set, that means we need to delete
-	// set itself and associated firewall rule too
-	m.rConn.FlushSet(r.nftSet)
-	m.rConn.DelSet(r.nftSet)
-	m.ipsetStore.deleteIpset(r.nftSet.Name)
-	return nil
-}
-
-// createDefaultAllowRules creates default allow rules for the input and output chains
-func (m *AclManager) createDefaultAllowRules() error {
-	expIn := []expr.Any{
-		&expr.Verdict{
-			Kind: expr.VerdictAccept,
-		},
-	}
-
-	_ = m.rConn.InsertRule(&nftables.Rule{
-		Table:    m.workTable,
-		Chain:    m.chainInputRules,
-		Position: 0,
-		Exprs:    expIn,
-	})
-
-	if err := m.rConn.Flush(); err != nil {
-		return fmt.Errorf(flushError, err)
-	}
-	return nil
-}
-
-// Flush rule/chain/set operations from the buffer
-//
-// Method also get all rules after flush and refreshes handle values in the rulesets
-func (m *AclManager) Flush() error {
-	if err := m.flushWithBackoff(); err != nil {
-		return err
-	}
-
-	if err := m.refreshRuleHandles(m.chainInputRules, false); err != nil {
-		log.Errorf("failed to refresh rule handles ipv4 input chain: %v", err)
-	}
-	if err := m.refreshRuleHandles(m.chainPrerouting, true); err != nil {
-		log.Errorf("failed to refresh rule handles prerouting chain: %v", err)
-	}
-
-	return nil
-}
-
-func (m *AclManager) addIOFiltering(
-	ip net.IP,
-	proto firewall.Protocol,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	action firewall.Action,
-	ipset *nftables.Set,
-) (*Rule, error) {
-	ruleId := generatePeerRuleId(ip, proto, sPort, dPort, action, ipset)
-	if r, ok := m.rules[ruleId]; ok {
-		return &Rule{
-			nftRule:    r.nftRule,
-			mangleRule: r.mangleRule,
-			nftSet:     r.nftSet,
-			ruleID:     r.ruleID,
-			ip:         ip,
-		}, nil
-	}
-
-	var expressions []expr.Any
-
-	if proto != firewall.ProtocolALL {
-		expressions = append(expressions, &expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       m.af.protoOffset,
-			Len:          uint32(1),
-		})
-
-		protoData, err := m.af.protoNum(proto)
-		if err != nil {
-			return nil, fmt.Errorf("convert protocol to number: %v", err)
-		}
-
-		expressions = append(expressions, &expr.Cmp{
-			Register: 1,
-			Op:       expr.CmpOpEq,
-			Data:     []byte{protoData},
-		})
-	}
-
-	rawIP := ipToBytes(ip, m.af)
-	// check if rawIP contains zeroed IPv4 0.0.0.0 value
-	// in that case not add IP match expression into the rule definition
-	if slices.ContainsFunc(rawIP, func(v byte) bool { return v != 0 }) {
-		expressions = append(expressions,
-			&expr.Payload{
-				DestRegister: 1,
-				Base:         expr.PayloadBaseNetworkHeader,
-				Offset:       m.af.srcAddrOffset,
-				Len:          m.af.addrLen,
-			},
-		)
-		// add individual IP for match if no ipset defined
-		if ipset == nil {
-			expressions = append(expressions,
-				&expr.Cmp{
-					Op:       expr.CmpOpEq,
-					Register: 1,
-					Data:     rawIP,
-				},
-			)
-		} else {
-			expressions = append(expressions,
-				&expr.Lookup{
-					SourceRegister: 1,
-					SetName:        ipset.Name,
-					SetID:          ipset.ID,
-				},
-			)
-		}
-	}
-
-	expressions = append(expressions, applyPort(sPort, true)...)
-	expressions = append(expressions, applyPort(dPort, false)...)
-
-	mainExpressions := slices.Clone(expressions)
-
-	switch action {
-	case firewall.ActionAccept:
-		mainExpressions = append(mainExpressions, &expr.Verdict{Kind: expr.VerdictAccept})
-	case firewall.ActionDrop:
-		mainExpressions = append(mainExpressions, &expr.Verdict{Kind: expr.VerdictDrop})
-	}
-
-	userData := []byte(ruleId)
-
-	chain := m.chainInputRules
-	rule := &nftables.Rule{
-		Table:    m.workTable,
-		Chain:    chain,
-		Exprs:    mainExpressions,
-		UserData: userData,
-	}
-
-	// Insert DROP rules at the beginning, append ACCEPT rules at the end
-	var nftRule *nftables.Rule
-	if action == firewall.ActionDrop {
-		nftRule = m.rConn.InsertRule(rule)
-	} else {
-		nftRule = m.rConn.AddRule(rule)
-	}
-
-	if err := m.rConn.Flush(); err != nil {
-		return nil, fmt.Errorf("flush input rule %s: %v", ruleId, err)
-	}
-
-	ruleStruct := &Rule{
-		nftRule: nftRule,
-		// best effort mangle rule
-		mangleRule: m.createPreroutingRule(expressions, userData),
-		nftSet:     ipset,
-		ruleID:     ruleId,
-		ip:         ip,
-	}
-	m.rules[ruleId] = ruleStruct
-	if ipset != nil {
-		m.ipsetStore.AddReferenceToIpset(ipset.Name)
-	}
-
-	return ruleStruct, nil
-}
-
-func (m *AclManager) createPreroutingRule(expressions []expr.Any, userData []byte) *nftables.Rule {
-	if m.chainPrerouting == nil {
-		log.Warn("prerouting chain is not created")
-		return nil
-	}
-
-	preroutingExprs := slices.Clone(expressions)
-
-	// interface
-	preroutingExprs = append([]expr.Any{
-		&expr.Meta{
-			Key:      expr.MetaKeyIIFNAME,
-			Register: 1,
-		},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-	}, preroutingExprs...)
-
-	// local destination and mark
-	preroutingExprs = append(preroutingExprs,
-		&expr.Fib{
-			Register:       1,
-			ResultADDRTYPE: true,
-			FlagDADDR:      true,
-		},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     binaryutil.NativeEndian.PutUint32(unix.RTN_LOCAL),
-		},
-
-		&expr.Immediate{
-			Register: 1,
-			Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkRedirected),
-		},
-		&expr.Meta{
-			Key:            expr.MetaKeyMARK,
-			Register:       1,
-			SourceRegister: true,
-		},
-	)
-
-	nfRule := m.rConn.AddRule(&nftables.Rule{
-		Table:    m.workTable,
-		Chain:    m.chainPrerouting,
-		Exprs:    preroutingExprs,
-		UserData: userData,
-	})
-
-	if err := m.rConn.Flush(); err != nil {
-		log.Errorf("failed to flush mangle rule %s: %v", string(userData), err)
-		return nil
-	}
-
-	return nfRule
-}
-
-func (m *AclManager) createDefaultChains() (err error) {
-	// chainNameInputRules
-	chain := m.createChain(chainNameInputRules)
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", chain.Name, err)
-		return fmt.Errorf(flushError, err)
-	}
-	m.chainInputRules = chain
-
-	// netbird-acl-input-filter
-	// type filter hook input priority filter; policy accept;
-	chain = m.createFilterChainWithHook(chainNameInputFilter, nftables.ChainHookInput)
-	m.addJumpRule(chain, m.chainInputRules.Name, expr.MetaKeyIIFNAME) // to netbird-acl-input-rules
-	m.addDropExpressions(chain, expr.MetaKeyIIFNAME)
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", chain.Name, err)
-		return err
-	}
-
-	// netbird-acl-forward-filter
-	chainFwFilter := m.createFilterChainWithHook(chainNameForwardFilter, nftables.ChainHookForward)
-	m.addJumpRulesToRtForward(chainFwFilter) // to netbird-rt-fwd
-	m.addDropExpressions(chainFwFilter, expr.MetaKeyIIFNAME)
-
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", chainNameForwardFilter, err)
-		return fmt.Errorf(flushError, err)
-	}
-
-	if err := m.allowRedirectedTraffic(chainFwFilter); err != nil {
-		log.Errorf("failed to allow redirected traffic: %s", err)
-	}
-
-	return nil
-}
-
-// Makes redirected traffic originally destined for the host itself (now subject to the forward filter)
-// go through the input filter as well. This will enable e.g. Docker services to keep working by accessing the
-// netbird peer IP.
-func (m *AclManager) allowRedirectedTraffic(chainFwFilter *nftables.Chain) error {
-	// Chain is created by route manager
-	// TODO: move creation to a common place
-	m.chainPrerouting = &nftables.Chain{
-		Name:     chainNameManglePrerouting,
-		Table:    m.workTable,
-		Type:     nftables.ChainTypeFilter,
-		Hooknum:  nftables.ChainHookPrerouting,
-		Priority: nftables.ChainPriorityMangle,
-	}
-
-	m.addFwmarkToForward(chainFwFilter)
-
-	if err := m.rConn.Flush(); err != nil {
-		return fmt.Errorf(flushError, err)
-	}
-
-	return nil
-}
-
-func (m *AclManager) addFwmarkToForward(chainFwFilter *nftables.Chain) {
-	m.rConn.InsertRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: chainFwFilter,
-		Exprs: []expr.Any{
-			&expr.Meta{
-				Key:      expr.MetaKeyMARK,
-				Register: 1,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkRedirected),
-			},
-			&expr.Verdict{
-				Kind: expr.VerdictAccept,
-			},
-		},
-	})
-}
-
-func (m *AclManager) addJumpRulesToRtForward(chainFwFilter *nftables.Chain) {
-	expressions := []expr.Any{
-		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Verdict{
-			Kind:  expr.VerdictJump,
-			Chain: m.routingFwChainName,
-		},
-	}
-
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: chainFwFilter,
-		Exprs: expressions,
-	})
-}
-
-func (m *AclManager) createChain(name string) *nftables.Chain {
-	chain := &nftables.Chain{
-		Name:  name,
-		Table: m.workTable,
-	}
-
-	chain = m.rConn.AddChain(chain)
-
-	insertReturnTrafficRule(m.rConn, m.workTable, chain)
-
-	return chain
-}
-
-func (m *AclManager) createFilterChainWithHook(name string, hookNum *nftables.ChainHook) *nftables.Chain {
-	polAccept := nftables.ChainPolicyAccept
-	chain := &nftables.Chain{
-		Name:     name,
-		Table:    m.workTable,
-		Hooknum:  hookNum,
-		Priority: nftables.ChainPriorityFilter,
-		Type:     nftables.ChainTypeFilter,
-		Policy:   &polAccept,
-	}
-
-	return m.rConn.AddChain(chain)
-}
-
-func (m *AclManager) addDropExpressions(chain *nftables.Chain, ifaceKey expr.MetaKey) []expr.Any {
-	expressions := []expr.Any{
-		&expr.Meta{Key: ifaceKey, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Verdict{Kind: expr.VerdictDrop},
-	}
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: chain,
-		Exprs: expressions,
-	})
-	return nil
-}
-
-func (m *AclManager) addJumpRule(chain *nftables.Chain, to string, ifaceKey expr.MetaKey) {
-	expressions := []expr.Any{
-		&expr.Meta{Key: ifaceKey, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Verdict{
-			Kind:  expr.VerdictJump,
-			Chain: to,
-		},
-	}
-
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: chain.Table,
-		Chain: chain,
-		Exprs: expressions,
-	})
-}
-
-func (m *AclManager) addIpToSet(ipsetName string, ip net.IP) (*nftables.Set, error) {
-	ipset, err := m.rConn.GetSetByName(m.workTable, ipsetName)
-	rawIP := ipToBytes(ip, m.af)
-	if err != nil {
-		if ipset, err = m.createSet(m.workTable, ipsetName); err != nil {
-			return nil, fmt.Errorf("get set name: %v", err)
-		}
-
-		m.ipsetStore.newIpset(ipset.Name)
-	}
-
-	if m.ipsetStore.IsIpInSet(ipset.Name, ip) {
-		return ipset, nil
-	}
-
-	if err := m.sConn.SetAddElements(ipset, []nftables.SetElement{{Key: rawIP}}); err != nil {
-		return nil, fmt.Errorf("add set element for the first time: %v", err)
-	}
-
-	m.ipsetStore.AddIpToSet(ipset.Name, ip)
-
-	if err := m.sConn.Flush(); err != nil {
-		return nil, fmt.Errorf("flush add elements: %v", err)
-	}
-
-	return ipset, nil
-}
-
-// createSet in given table by name
-func (m *AclManager) createSet(table *nftables.Table, name string) (*nftables.Set, error) {
-	ipset := &nftables.Set{
-		Name:    name,
-		Table:   table,
-		Dynamic: true,
-		KeyType: m.af.setKeyType,
-	}
-
-	if err := m.rConn.AddSet(ipset, nil); err != nil {
-		return nil, fmt.Errorf("create set: %v", err)
-	}
-
-	if err := m.rConn.Flush(); err != nil {
-		return nil, fmt.Errorf("flush created set: %v", err)
-	}
-
-	return ipset, nil
-}
-
-func (m *AclManager) flushWithBackoff() (err error) {
-	backoff := 4
-	backoffTime := 1000 * time.Millisecond
-	for i := 0; ; i++ {
-		err = m.rConn.Flush()
-		if err != nil {
-			log.Debugf("failed to flush nftables: %v", err)
-			if !strings.Contains(err.Error(), "busy") {
-				return
-			}
-			log.Error("failed to flush nftables, retrying...")
-			if i == backoff-1 {
-				return err
-			}
-			time.Sleep(backoffTime)
-			backoffTime *= 2
-			continue
-		}
-		break
-	}
-	return
-}
-
-func (m *AclManager) refreshRuleHandles(chain *nftables.Chain, mangle bool) error {
-	if m.workTable == nil || chain == nil {
-		return nil
-	}
-
-	list, err := m.rConn.GetRules(m.workTable, chain)
-	if err != nil {
-		return err
-	}
-
-	for _, rule := range list {
-		if len(rule.UserData) == 0 {
-			continue
-		}
-		split := bytes.Split(rule.UserData, []byte(" "))
-		r, ok := m.rules[string(split[0])]
-		if ok {
-			if mangle {
-				*r.mangleRule = *rule
-			} else {
-				*r.nftRule = *rule
-			}
-		}
-	}
-
-	return nil
-}
-
-func generatePeerRuleId(ip net.IP, proto firewall.Protocol, sPort *firewall.Port, dPort *firewall.Port, action firewall.Action, ipset *nftables.Set) string {
-	rulesetID := ":" + string(proto) + ":"
-	if sPort != nil {
-		rulesetID += sPort.String()
-	}
-	rulesetID += ":"
-	if dPort != nil {
-		rulesetID += dPort.String()
-	}
-	rulesetID += ":"
-	rulesetID += strconv.Itoa(int(action))
-	if ipset == nil {
-		return "ip:" + ip.String() + rulesetID
-	}
-	return "set:" + ipset.Name + rulesetID
-}
-
-func ifname(n string) []byte {
-	b := make([]byte, 16)
-	copy(b, n+"\x00")
-	return b
-}
-
-
-// ipToBytes converts net.IP to the correct byte length for the address family.
-func ipToBytes(ip net.IP, af addrFamily) []byte {
-	if af.addrLen == 4 {
-		return ip.To4()
-	}
-	return ip.To16()
-}
-

client/firewall/nftables/chains_linux.go

@@ -0,0 +1,880 @@
+//go:build !android
+
+package nftables
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/expr"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	"github.com/netbirdio/netbird/client/firewall/firewalld"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbnet "github.com/netbirdio/netbird/client/net"
+)
+
+func (r *family) createContainers() error {
+	r.chains[chainNameRoutingFw] = r.conn.AddChain(&nftables.Chain{
+		Name:  chainNameRoutingFw,
+		Table: r.workTable,
+	})
+
+	prio := *nftables.ChainPriorityNATSource - 1
+	r.chains[chainNameRoutingNat] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameRoutingNat,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookPostrouting,
+		Priority: &prio,
+		Type:     nftables.ChainTypeNAT,
+	})
+
+	r.chains[chainNameRoutingRdr] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameRoutingRdr,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookPrerouting,
+		Priority: nftables.ChainPriorityNATDest,
+		Type:     nftables.ChainTypeNAT,
+	})
+
+	r.chains[chainNameManglePostrouting] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameManglePostrouting,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookPostrouting,
+		Priority: nftables.ChainPriorityMangle,
+		Type:     nftables.ChainTypeFilter,
+	})
+
+	r.chains[chainNameManglePrerouting] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameManglePrerouting,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookPrerouting,
+		Priority: nftables.ChainPriorityMangle,
+		Type:     nftables.ChainTypeFilter,
+	})
+
+	r.chains[chainNameMangleForward] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameMangleForward,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookForward,
+		Priority: nftables.ChainPriorityMangle,
+		Type:     nftables.ChainTypeFilter,
+	})
+
+	insertReturnTrafficRule(r.conn, r.workTable, r.chains[chainNameRoutingFw])
+
+	r.addPostroutingRules()
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("initialize tables: %v", err)
+	}
+
+	if err := r.addMSSClampingRules(); err != nil {
+		log.Errorf("failed to add MSS clamping rules: %s", err)
+	}
+
+	// Kernel routing opens both INPUT and FORWARD.
+	if err := r.openInterface(true); err != nil {
+		log.Errorf("failed to open interface in foreign chains: %s", err)
+	}
+
+	if err := firewalld.TrustInterface(r.wgIface.Name()); err != nil {
+		log.Warnf("failed to trust interface in firewalld: %v", err)
+	}
+
+	if err := r.refreshRulesMap(); err != nil {
+		log.Errorf("failed to refresh rules: %s", err)
+	}
+
+	return nil
+}
+
+// setupDataPlaneMark configures the fwmark for the data plane
+func (r *family) setupDataPlaneMark() error {
+	if r.chains[chainNameManglePrerouting] == nil || r.chains[chainNameManglePostrouting] == nil {
+		return errors.New("no mangle chains found")
+	}
+
+	ctNew := getCtNewExprs()
+	preExprs := []expr.Any{
+		&expr.Meta{
+			Key:      expr.MetaKeyIIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+	}
+	preExprs = append(preExprs, ctNew...)
+	preExprs = append(preExprs,
+		&expr.Immediate{
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(nbnet.DataPlaneMarkIn),
+		},
+		&expr.Ct{
+			Key:            expr.CtKeyMARK,
+			Register:       1,
+			SourceRegister: true,
+		},
+	)
+
+	preNftRule := &nftables.Rule{
+		Table: r.workTable,
+		Chain: r.chains[chainNameManglePrerouting],
+		Exprs: preExprs,
+	}
+	r.conn.AddRule(preNftRule)
+
+	postExprs := []expr.Any{
+		&expr.Meta{
+			Key:      expr.MetaKeyOIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+	}
+	postExprs = append(postExprs, ctNew...)
+	postExprs = append(postExprs,
+		&expr.Immediate{
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(nbnet.DataPlaneMarkOut),
+		},
+		&expr.Ct{
+			Key:            expr.CtKeyMARK,
+			Register:       1,
+			SourceRegister: true,
+		},
+	)
+
+	postNftRule := &nftables.Rule{
+		Table: r.workTable,
+		Chain: r.chains[chainNameManglePostrouting],
+		Exprs: postExprs,
+	}
+	r.conn.AddRule(postNftRule)
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("flush: %w", err)
+	}
+
+	return nil
+}
+
+// openInterface adds passthrough accept rules for the NetBird interface to the
+// kernel's filter table and external chains so they don't drop our traffic.
+// includeForward also opens the FORWARD chains (kernel routing); when false only
+// INPUT is opened, which is all the userspace router needs since it never
+// forwards in the kernel.
+func (r *family) openInterface(includeForward bool) error {
+	var merr *multierror.Error
+
+	if err := r.acceptFilterTableRules(includeForward); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.acceptExternalChainsRules(includeForward); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("add accept rules to external chains: %w", err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) acceptFilterTableRules(includeForward bool) error {
+	if r.filterTable == nil {
+		return nil
+	}
+
+	fw := "iptables"
+
+	defer func() {
+		log.Debugf("Used %s to add accept input/forward rules", fw)
+	}()
+
+	// Try iptables first and fallback to nftables if iptables is not available.
+	// Use the correct protocol (iptables vs ip6tables) for the address family.
+	ipt, err := iptables.NewWithProtocol(r.iptablesProto())
+	if err != nil {
+		log.Warnf("Will use nftables to manipulate the filter table because iptables is not available: %v", err)
+
+		fw = "nftables"
+		return r.acceptFilterRulesNftables(r.filterTable, includeForward)
+	}
+
+	if err := r.acceptFilterRulesIptables(ipt, includeForward); err != nil {
+		log.Warnf("iptables failed (table may be incompatible), falling back to nftables: %v", err)
+		fw = "nftables"
+		return r.acceptFilterRulesNftables(r.filterTable, includeForward)
+	}
+	return nil
+}
+
+func (r *family) acceptFilterRulesIptables(ipt *iptables.IPTables, includeForward bool) error {
+	var merr *multierror.Error
+
+	if includeForward {
+		for _, rule := range r.getAcceptForwardRules() {
+			if err := ipt.Insert("filter", chainNameForward, 1, rule...); err != nil {
+				merr = multierror.Append(merr, fmt.Errorf("add iptables forward rule: %v", err))
+			} else {
+				log.Debugf("added iptables forward rule: %v", rule)
+			}
+		}
+	}
+
+	inputRule := r.getAcceptInputRule()
+	if err := ipt.Insert("filter", chainNameInput, 1, inputRule...); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("add iptables input rule: %v", err))
+	} else {
+		log.Debugf("added iptables input rule: %v", inputRule)
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) getAcceptForwardRules() [][]string {
+	intf := r.wgIface.Name()
+	return [][]string{
+		{"-i", intf, "-j", "ACCEPT"},
+		{"-o", intf, "-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"},
+	}
+}
+
+func (r *family) getAcceptInputRule() []string {
+	return []string{"-i", r.wgIface.Name(), "-j", "ACCEPT"}
+}
+
+// acceptFilterRulesNftables adds accept rules to the ip filter table using nftables.
+// This is used when iptables is not available.
+func (r *family) acceptFilterRulesNftables(table *nftables.Table, includeForward bool) error {
+	intf := ifname(r.wgIface.Name())
+
+	if includeForward {
+		forwardChain := &nftables.Chain{
+			Name:     chainNameForward,
+			Table:    table,
+			Type:     nftables.ChainTypeFilter,
+			Hooknum:  nftables.ChainHookForward,
+			Priority: nftables.ChainPriorityFilter,
+		}
+		r.insertForwardAcceptRules(forwardChain, intf)
+	}
+
+	inputChain := &nftables.Chain{
+		Name:     chainNameInput,
+		Table:    table,
+		Type:     nftables.ChainTypeFilter,
+		Hooknum:  nftables.ChainHookInput,
+		Priority: nftables.ChainPriorityFilter,
+	}
+	r.insertInputAcceptRule(inputChain, intf)
+
+	return r.conn.Flush()
+}
+
+// acceptExternalChainsRules adds accept rules to external chains (non-netbird, non-iptables tables).
+// It dynamically finds chains at call time to handle chains that may have been created after startup.
+func (r *family) acceptExternalChainsRules(includeForward bool) error {
+	chains := r.findExternalChains()
+	if len(chains) == 0 {
+		return nil
+	}
+
+	intf := ifname(r.wgIface.Name())
+	for _, chain := range chains {
+		r.applyExternalChainAccept(chain, intf, includeForward)
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("flush external chain rules: %w", err)
+	}
+	return nil
+}
+
+func (r *family) applyExternalChainAccept(chain *nftables.Chain, intf []byte, includeForward bool) {
+	if chain.Hooknum == nil {
+		log.Debugf("skipping external chain %s/%s: hooknum is nil", chain.Table.Name, chain.Name)
+		return
+	}
+
+	log.Debugf("adding accept rules to external %s chain: %s %s/%s",
+		hookName(chain.Hooknum), familyName(chain.Table.Family), chain.Table.Name, chain.Name)
+
+	switch *chain.Hooknum {
+	case *nftables.ChainHookForward:
+		if includeForward {
+			r.insertForwardAcceptRules(chain, intf)
+		}
+	case *nftables.ChainHookInput:
+		r.insertInputAcceptRule(chain, intf)
+	}
+}
+
+func (r *family) insertForwardAcceptRules(chain *nftables.Chain, intf []byte) {
+	existing, err := r.existingNetbirdRulesInChain(chain)
+	if err != nil {
+		log.Warnf("skip forward accept rules in %s/%s: %v", chain.Table.Name, chain.Name, err)
+		return
+	}
+	r.insertForwardIifRule(chain, intf, existing)
+	r.insertForwardOifEstablishedRule(chain, intf, existing)
+}
+
+func (r *family) insertForwardIifRule(chain *nftables.Chain, intf []byte, existing map[string]bool) {
+	if existing[userDataAcceptForwardRuleIif] {
+		return
+	}
+	r.conn.InsertRule(&nftables.Rule{
+		Table: chain.Table,
+		Chain: chain,
+		Exprs: []expr.Any{
+			&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+			&expr.Cmp{Op: expr.CmpOpEq, Register: 1, Data: intf},
+			&expr.Counter{},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		},
+		UserData: []byte(userDataAcceptForwardRuleIif),
+	})
+}
+
+func (r *family) insertForwardOifEstablishedRule(chain *nftables.Chain, intf []byte, existing map[string]bool) {
+	if existing[userDataAcceptForwardRuleOif] {
+		return
+	}
+	exprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyOIFNAME, Register: 1},
+		&expr.Cmp{Op: expr.CmpOpEq, Register: 1, Data: intf},
+	}
+	r.conn.InsertRule(&nftables.Rule{
+		Table:    chain.Table,
+		Chain:    chain,
+		Exprs:    append(exprs, getEstablishedExprs(2)...),
+		UserData: []byte(userDataAcceptForwardRuleOif),
+	})
+}
+
+func (r *family) insertInputAcceptRule(chain *nftables.Chain, intf []byte) {
+	existing, err := r.existingNetbirdRulesInChain(chain)
+	if err != nil {
+		log.Warnf("skip input accept rule in %s/%s: %v", chain.Table.Name, chain.Name, err)
+		return
+	}
+	if existing[userDataAcceptInputRule] {
+		return
+	}
+	r.conn.InsertRule(&nftables.Rule{
+		Table: chain.Table,
+		Chain: chain,
+		Exprs: []expr.Any{
+			&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+			&expr.Cmp{Op: expr.CmpOpEq, Register: 1, Data: intf},
+			&expr.Counter{},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		},
+		UserData: []byte(userDataAcceptInputRule),
+	})
+}
+
+// existingNetbirdRulesInChain returns the set of netbird-owned UserData tags present in a chain; callers must bail on error since InsertRule is additive.
+func (r *family) existingNetbirdRulesInChain(chain *nftables.Chain) (map[string]bool, error) {
+	rules, err := r.conn.GetRules(chain.Table, chain)
+	if err != nil {
+		return nil, fmt.Errorf("list rules: %w", err)
+	}
+	present := map[string]bool{}
+	for _, rule := range rules {
+		if !isNetbirdAcceptRuleTag(rule.UserData) {
+			continue
+		}
+		present[string(rule.UserData)] = true
+	}
+	return present, nil
+}
+
+func isNetbirdAcceptRuleTag(userData []byte) bool {
+	switch string(userData) {
+	case userDataAcceptForwardRuleIif,
+		userDataAcceptForwardRuleOif,
+		userDataAcceptInputRule:
+		return true
+	}
+	return false
+}
+
+func (r *family) removeAcceptFilterRules() error {
+	var merr *multierror.Error
+
+	if err := r.removeFilterTableRules(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.removeExternalChainsRules(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("remove external chain rules: %w", err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) removeFilterTableRules() error {
+	if r.filterTable == nil {
+		return nil
+	}
+
+	ipt, err := iptables.NewWithProtocol(r.iptablesProto())
+	if err != nil {
+		log.Debugf("iptables not available, using nftables to remove filter rules: %v", err)
+		return r.removeAcceptRulesFromTable(r.filterTable)
+	}
+
+	if err := r.removeAcceptFilterRulesIptables(ipt); err != nil {
+		log.Debugf("iptables removal failed (table may be incompatible), falling back to nftables: %v", err)
+		return r.removeAcceptRulesFromTable(r.filterTable)
+	}
+	return nil
+}
+
+func (r *family) removeAcceptRulesFromTable(table *nftables.Table) error {
+	chains, err := r.conn.ListChainsOfTableFamily(table.Family)
+	if err != nil {
+		return fmt.Errorf("list chains: %v", err)
+	}
+
+	for _, chain := range chains {
+		if chain.Table.Name != table.Name {
+			continue
+		}
+
+		if chain.Name != chainNameForward && chain.Name != chainNameInput {
+			continue
+		}
+
+		if err := r.removeAcceptRulesFromChain(table, chain); err != nil {
+			return err
+		}
+	}
+
+	return r.conn.Flush()
+}
+
+func (r *family) removeAcceptRulesFromChain(table *nftables.Table, chain *nftables.Chain) error {
+	rules, err := r.conn.GetRules(table, chain)
+	if err != nil {
+		return fmt.Errorf("get rules from %s/%s: %v", table.Name, chain.Name, err)
+	}
+
+	for _, rule := range rules {
+		if bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleIif)) ||
+			bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleOif)) ||
+			bytes.Equal(rule.UserData, []byte(userDataAcceptInputRule)) {
+			if err := r.conn.DelRule(rule); err != nil {
+				return fmt.Errorf("delete rule from %s/%s: %v", table.Name, chain.Name, err)
+			}
+		}
+	}
+	return nil
+}
+
+// removeExternalChainsRules removes our accept rules from all external chains.
+// This is deterministic - it scans for chains at removal time rather than relying on saved state,
+// ensuring cleanup works even after a crash or if chains changed.
+func (r *family) removeExternalChainsRules() error {
+	chains := r.findExternalChains()
+	if len(chains) == 0 {
+		return nil
+	}
+
+	var merr *multierror.Error
+	for _, chain := range chains {
+		if err := r.removeAcceptRulesFromChain(chain.Table, chain); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove rules from external chain %s/%s: %w", chain.Table.Name, chain.Name, err))
+			continue
+		}
+		if err := r.conn.Flush(); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("flush external chain %s/%s: %w", chain.Table.Name, chain.Name, err))
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// findExternalChains scans for chains from non-netbird tables that have FORWARD or INPUT hooks.
+// This is used both at startup (to know where to add rules) and at cleanup (to ensure deterministic removal).
+func (r *family) findExternalChains() []*nftables.Chain {
+	var chains []*nftables.Chain
+
+	families := []nftables.TableFamily{r.af.tableFamily, nftables.TableFamilyINet}
+
+	for _, family := range families {
+		allChains, err := r.conn.ListChainsOfTableFamily(family)
+		if err != nil {
+			log.Debugf("list chains for family %d: %v", family, err)
+			continue
+		}
+
+		for _, chain := range allChains {
+			if r.isExternalChain(chain) {
+				chains = append(chains, chain)
+			}
+		}
+	}
+
+	return chains
+}
+
+func (r *family) isExternalChain(chain *nftables.Chain) bool {
+	if r.workTable != nil && chain.Table.Name == r.workTable.Name {
+		return false
+	}
+
+	// Skip firewalld-owned chains. Firewalld creates its chains with the
+	// NFT_CHAIN_OWNER flag, so inserting rules into them returns EPERM.
+	// We delegate acceptance to firewalld by trusting the interface instead.
+	if chain.Table.Name == firewalldTableName {
+		return false
+	}
+
+	// Skip iptables/ip6tables-managed tables (adding nft-native rules breaks iptables-save compat)
+	if (chain.Table.Family == nftables.TableFamilyIPv4 || chain.Table.Family == nftables.TableFamilyIPv6) && isIptablesTable(chain.Table.Name) {
+		return false
+	}
+
+	if chain.Type != nftables.ChainTypeFilter {
+		return false
+	}
+
+	if chain.Hooknum == nil {
+		return false
+	}
+
+	return *chain.Hooknum == *nftables.ChainHookForward || *chain.Hooknum == *nftables.ChainHookInput
+}
+
+func isIptablesTable(name string) bool {
+	switch name {
+	case tableNameFilter, tableNat, tableMangle, tableRaw, tableSecurity:
+		return true
+	}
+	return false
+}
+
+func (r *family) removeAcceptFilterRulesIptables(ipt *iptables.IPTables) error {
+	var merr *multierror.Error
+
+	for _, rule := range r.getAcceptForwardRules() {
+		if err := ipt.DeleteIfExists("filter", chainNameForward, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove iptables forward rule: %v", err))
+		}
+	}
+
+	inputRule := r.getAcceptInputRule()
+	if err := ipt.DeleteIfExists("filter", chainNameInput, inputRule...); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("remove iptables input rule: %v", err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// Flush rule/chain/set operations from the buffer
+//
+// Method also get all rules after flush and refreshes handle values in the rulesets
+func (r *family) Flush() error {
+	if err := r.flushWithBackoff(); err != nil {
+		return err
+	}
+
+	if err := r.refreshRuleHandles(r.chainInputRules, false); err != nil {
+		log.Errorf("failed to refresh rule handles ipv4 input chain: %v", err)
+	}
+	if err := r.refreshRuleHandles(r.chainPrerouting, true); err != nil {
+		log.Errorf("failed to refresh rule handles prerouting chain: %v", err)
+	}
+
+	return nil
+}
+
+// queuePreroutingRule builds the prerouting mangle rule that marks
+// redirected traffic and queues it on the connection without flushing,
+// so the caller can commit it in the same transaction as the rule it
+// pairs with. Returns nil when the prerouting chain is absent, in which
+// case nothing is queued.
+func (r *family) queuePreroutingRule(expressions []expr.Any, userData []byte) *nftables.Rule {
+	if r.chainPrerouting == nil {
+		log.Warn("prerouting chain is not created")
+		return nil
+	}
+
+	preroutingExprs := slices.Clone(expressions)
+
+	// interface
+	preroutingExprs = append([]expr.Any{
+		&expr.Meta{
+			Key:      expr.MetaKeyIIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+	}, preroutingExprs...)
+
+	// local destination and mark
+	preroutingExprs = append(preroutingExprs,
+		&expr.Fib{
+			Register:       1,
+			ResultADDRTYPE: true,
+			FlagDADDR:      true,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(unix.RTN_LOCAL),
+		},
+
+		&expr.Immediate{
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkRedirected),
+		},
+		&expr.Meta{
+			Key:            expr.MetaKeyMARK,
+			Register:       1,
+			SourceRegister: true,
+		},
+	)
+
+	return r.conn.AddRule(&nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chainPrerouting,
+		Exprs:    preroutingExprs,
+		UserData: userData,
+	})
+}
+
+func (r *family) createDefaultChains() (err error) {
+	// chainNameInputRules
+	chain := r.createChain(chainNameInputRules)
+	err = r.conn.Flush()
+	if err != nil {
+		log.Debugf("failed to create chain (%s): %s", chain.Name, err)
+		return fmt.Errorf(flushError, err)
+	}
+	r.chainInputRules = chain
+
+	// netbird-acl-input-filter
+	// type filter hook input priority filter; policy accept;
+	chain = r.createFilterChainWithHook(chainNameInputFilter, nftables.ChainHookInput)
+	r.addJumpRule(chain, r.chainInputRules.Name, expr.MetaKeyIIFNAME) // to netbird-acl-input-rules
+	r.addDropExpressions(chain, expr.MetaKeyIIFNAME)
+	err = r.conn.Flush()
+	if err != nil {
+		log.Debugf("failed to create chain (%s): %s", chain.Name, err)
+		return err
+	}
+
+	// netbird-acl-forward-filter
+	chainFwFilter := r.createFilterChainWithHook(chainNameForwardFilter, nftables.ChainHookForward)
+	r.addJumpRulesToRtForward(chainFwFilter) // to netbird-rt-fwd
+	r.addDropExpressions(chainFwFilter, expr.MetaKeyIIFNAME)
+
+	err = r.conn.Flush()
+	if err != nil {
+		log.Debugf("failed to create chain (%s): %s", chainNameForwardFilter, err)
+		return fmt.Errorf(flushError, err)
+	}
+
+	if err := r.allowRedirectedTraffic(chainFwFilter); err != nil {
+		log.Errorf("failed to allow redirected traffic: %s", err)
+	}
+
+	return nil
+}
+
+// Makes redirected traffic originally destined for the host itself (now subject to the forward filter)
+// go through the input filter as well. This will enable e.g. Docker services to keep working by accessing the
+// netbird peer IP.
+func (r *family) allowRedirectedTraffic(chainFwFilter *nftables.Chain) error {
+	r.chainPrerouting = r.chains[chainNameManglePrerouting]
+
+	r.addFwmarkToForward(chainFwFilter)
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf(flushError, err)
+	}
+
+	return nil
+}
+
+func (r *family) addFwmarkToForward(chainFwFilter *nftables.Chain) {
+	r.conn.InsertRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: chainFwFilter,
+		Exprs: []expr.Any{
+			&expr.Meta{
+				Key:      expr.MetaKeyMARK,
+				Register: 1,
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkRedirected),
+			},
+			&expr.Verdict{
+				Kind: expr.VerdictAccept,
+			},
+		},
+	})
+}
+
+func (r *family) addJumpRulesToRtForward(chainFwFilter *nftables.Chain) {
+	expressions := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Verdict{
+			Kind:  expr.VerdictJump,
+			Chain: r.routingFwChainName,
+		},
+	}
+
+	_ = r.conn.AddRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: chainFwFilter,
+		Exprs: expressions,
+	})
+}
+
+func (r *family) createChain(name string) *nftables.Chain {
+	chain := &nftables.Chain{
+		Name:  name,
+		Table: r.workTable,
+	}
+
+	chain = r.conn.AddChain(chain)
+
+	insertReturnTrafficRule(r.conn, r.workTable, chain)
+
+	return chain
+}
+
+func (r *family) createFilterChainWithHook(name string, hookNum *nftables.ChainHook) *nftables.Chain {
+	polAccept := nftables.ChainPolicyAccept
+	chain := &nftables.Chain{
+		Name:     name,
+		Table:    r.workTable,
+		Hooknum:  hookNum,
+		Priority: nftables.ChainPriorityFilter,
+		Type:     nftables.ChainTypeFilter,
+		Policy:   &polAccept,
+	}
+
+	return r.conn.AddChain(chain)
+}
+
+func (r *family) addDropExpressions(chain *nftables.Chain, ifaceKey expr.MetaKey) []expr.Any {
+	expressions := []expr.Any{
+		&expr.Meta{Key: ifaceKey, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Verdict{Kind: expr.VerdictDrop},
+	}
+	_ = r.conn.AddRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: chain,
+		Exprs: expressions,
+	})
+	return nil
+}
+
+func (r *family) addJumpRule(chain *nftables.Chain, to string, ifaceKey expr.MetaKey) {
+	expressions := []expr.Any{
+		&expr.Meta{Key: ifaceKey, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Verdict{
+			Kind:  expr.VerdictJump,
+			Chain: to,
+		},
+	}
+
+	_ = r.conn.AddRule(&nftables.Rule{
+		Table: chain.Table,
+		Chain: chain,
+		Exprs: expressions,
+	})
+}
+
+func (r *family) flushWithBackoff() (err error) {
+	backoff := 4
+	backoffTime := 1000 * time.Millisecond
+	for i := 0; ; i++ {
+		err = r.conn.Flush()
+		if err != nil {
+			log.Debugf("failed to flush nftables: %v", err)
+			if !strings.Contains(err.Error(), "busy") {
+				return
+			}
+			log.Error("failed to flush nftables, retrying...")
+			if i == backoff-1 {
+				return err
+			}
+			time.Sleep(backoffTime)
+			backoffTime *= 2
+			continue
+		}
+		break
+	}
+	return
+}
+
+func (r *family) refreshRuleHandles(chain *nftables.Chain, mangle bool) error {
+	if r.workTable == nil || chain == nil {
+		return nil
+	}
+
+	list, err := r.conn.GetRules(r.workTable, chain)
+	if err != nil {
+		return err
+	}
+
+	for _, rule := range list {
+		if len(rule.UserData) == 0 {
+			continue
+		}
+		pr, ok := r.filters[firewall.RuleID(rule.UserData)]
+		if !ok {
+			continue
+		}
+		if mangle {
+			if pr.mangleRule != nil {
+				*pr.mangleRule = *rule
+			}
+		} else {
+			*pr.nftRule = *rule
+		}
+	}
+
+	return nil
+}

client/firewall/nftables/dnat_linux.go

@@ -0,0 +1,565 @@
+//go:build !android
+
+package nftables
+
+import (
+	"fmt"
+	"net/netip"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/expr"
+	"github.com/google/nftables/xt"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+)
+
+func (r *family) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error) {
+	ruleID := rule.ID()
+	if _, exists := r.rules[ruleID+dnatSuffix]; exists {
+		return rule, nil
+	}
+
+	protoNum, err := r.af.protoNum(rule.Protocol)
+	if err != nil {
+		return nil, fmt.Errorf("convert protocol to number: %w", err)
+	}
+
+	// Request forwarding once the rule is about to be installed, releasing
+	// it if a later step fails so the refcount tracks the real rules.
+	if err := r.ipFwdState.RequestForwarding(); err != nil {
+		return nil, err
+	}
+
+	if err := r.addDnatRedirect(rule, protoNum, ruleID); err != nil {
+		r.releaseForwarding()
+		return nil, err
+	}
+
+	if err := r.addDnatMasq(rule, protoNum, ruleID); err != nil {
+		r.releaseForwarding()
+		delete(r.rules, ruleID+dnatSuffix)
+		return nil, err
+	}
+
+	// Unlike iptables, there's no point in adding "out" rules in the forward chain here as our policy is ACCEPT.
+	// To overcome DROP policies in other chains, we'd have to add rules to the chains there.
+	// We also cannot just add "oif <iface> accept" there and filter in our own table as we don't know what is supposed to be allowed.
+	// TODO: find chains with drop policies and add rules there
+
+	if err := r.conn.Flush(); err != nil {
+		r.releaseForwarding()
+		return nil, fmt.Errorf("flush rules: %w", err)
+	}
+
+	return &rule, nil
+}
+
+func (r *family) addDnatRedirect(rule firewall.ForwardRule, protoNum uint8, ruleID firewall.RuleID) error {
+	dnatExprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpNeq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{protoNum},
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       2,
+			Len:          2,
+		},
+	}
+	portExprs, err := r.applyPort(&rule.DestinationPort, false)
+	if err != nil {
+		return fmt.Errorf("apply destination port: %w", err)
+	}
+	dnatExprs = append(dnatExprs, portExprs...)
+
+	// shifted translated port is not supported in nftables, so we hand this over to xtables
+	if rule.TranslatedPort.IsRange && len(rule.TranslatedPort.Values) == 2 {
+		if rule.TranslatedPort.Values[0] != rule.DestinationPort.Values[0] ||
+			rule.TranslatedPort.Values[1] != rule.DestinationPort.Values[1] {
+			return r.addXTablesRedirect(dnatExprs, ruleID, rule)
+		}
+	}
+
+	additionalExprs, regProtoMin, regProtoMax, err := r.handleTranslatedPort(rule)
+	if err != nil {
+		return err
+	}
+	dnatExprs = append(dnatExprs, additionalExprs...)
+
+	dnatExprs = append(dnatExprs,
+		&expr.NAT{
+			Type:        expr.NATTypeDestNAT,
+			Family:      uint32(r.af.tableFamily),
+			RegAddrMin:  1,
+			RegProtoMin: regProtoMin,
+			RegProtoMax: regProtoMax,
+		},
+	)
+
+	dnatRule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingRdr],
+		Exprs:    dnatExprs,
+		UserData: []byte(ruleID + dnatSuffix),
+	}
+	r.conn.AddRule(dnatRule)
+	r.rules[ruleID+dnatSuffix] = dnatRule
+
+	return nil
+}
+
+func (r *family) handleTranslatedPort(rule firewall.ForwardRule) ([]expr.Any, uint32, uint32, error) {
+	switch {
+	case rule.TranslatedPort.IsRange && len(rule.TranslatedPort.Values) == 2:
+		return r.handlePortRange(rule)
+	case len(rule.TranslatedPort.Values) == 0:
+		return r.handleAddressOnly(rule)
+	case len(rule.TranslatedPort.Values) == 1:
+		return r.handleSinglePort(rule)
+	default:
+		return nil, 0, 0, fmt.Errorf("invalid translated port: %v", rule.TranslatedPort)
+	}
+}
+
+func (r *family) handlePortRange(rule firewall.ForwardRule) ([]expr.Any, uint32, uint32, error) {
+	exprs := []expr.Any{
+		&expr.Immediate{
+			Register: 1,
+			Data:     rule.TranslatedAddress.AsSlice(),
+		},
+		&expr.Immediate{
+			Register: 2,
+			Data:     binaryutil.BigEndian.PutUint16(rule.TranslatedPort.Values[0]),
+		},
+		&expr.Immediate{
+			Register: 3,
+			Data:     binaryutil.BigEndian.PutUint16(rule.TranslatedPort.Values[1]),
+		},
+	}
+	return exprs, 2, 3, nil
+}
+
+func (r *family) handleAddressOnly(rule firewall.ForwardRule) ([]expr.Any, uint32, uint32, error) {
+	exprs := []expr.Any{
+		&expr.Immediate{
+			Register: 1,
+			Data:     rule.TranslatedAddress.AsSlice(),
+		},
+	}
+	return exprs, 0, 0, nil
+}
+
+func (r *family) handleSinglePort(rule firewall.ForwardRule) ([]expr.Any, uint32, uint32, error) {
+	exprs := []expr.Any{
+		&expr.Immediate{
+			Register: 1,
+			Data:     rule.TranslatedAddress.AsSlice(),
+		},
+		&expr.Immediate{
+			Register: 2,
+			Data:     binaryutil.BigEndian.PutUint16(rule.TranslatedPort.Values[0]),
+		},
+	}
+	return exprs, 2, 0, nil
+}
+
+func (r *family) addXTablesRedirect(dnatExprs []expr.Any, ruleID firewall.RuleID, rule firewall.ForwardRule) error {
+	dnatExprs = append(dnatExprs,
+		&expr.Counter{},
+		&expr.Target{
+			Name: "DNAT",
+			Rev:  2,
+			Info: &xt.NatRange2{
+				NatRange: xt.NatRange{
+					Flags:   uint(xt.NatRangeMapIPs | xt.NatRangeProtoSpecified | xt.NatRangeProtoOffset),
+					MinIP:   rule.TranslatedAddress.AsSlice(),
+					MaxIP:   rule.TranslatedAddress.AsSlice(),
+					MinPort: rule.TranslatedPort.Values[0],
+					MaxPort: rule.TranslatedPort.Values[1],
+				},
+				BasePort: rule.DestinationPort.Values[0],
+			},
+		},
+	)
+
+	natTable := &nftables.Table{
+		Name:   tableNat,
+		Family: r.af.tableFamily,
+	}
+	dnatRule := &nftables.Rule{
+		Table: natTable,
+		Chain: &nftables.Chain{
+			Name:     chainNameNatPrerouting,
+			Table:    natTable,
+			Type:     nftables.ChainTypeNAT,
+			Hooknum:  nftables.ChainHookPrerouting,
+			Priority: nftables.ChainPriorityNATDest,
+		},
+		Exprs:    dnatExprs,
+		UserData: []byte(ruleID + dnatSuffix),
+	}
+	r.conn.AddRule(dnatRule)
+	r.rules[ruleID+dnatSuffix] = dnatRule
+
+	return nil
+}
+
+func (r *family) addDnatMasq(rule firewall.ForwardRule, protoNum uint8, ruleID firewall.RuleID) error {
+	portExprs, err := r.applyPort(&rule.TranslatedPort, false)
+	if err != nil {
+		return fmt.Errorf("apply translated port: %w", err)
+	}
+
+	masqExprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyOIFNAME, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{protoNum},
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       r.af.dstAddrOffset,
+			Len:          r.af.addrLen,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     rule.TranslatedAddress.AsSlice(),
+		},
+	}
+
+	masqExprs = append(masqExprs, portExprs...)
+	masqExprs = append(masqExprs, &expr.Masq{})
+
+	masqRule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingNat],
+		Exprs:    masqExprs,
+		UserData: []byte(ruleID + snatSuffix),
+	}
+	r.conn.AddRule(masqRule)
+	r.rules[ruleID+snatSuffix] = masqRule
+
+	return nil
+}
+
+func (r *family) DeleteDNATRule(rule firewall.Rule) error {
+	ruleID := rule.ID()
+
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	var merr *multierror.Error
+	var needsFlush bool
+	var found bool
+
+	if dnatRule, exists := r.rules[ruleID+dnatSuffix]; exists {
+		found = true
+		if dnatRule.Handle == 0 {
+			log.Warnf("dnat rule %s has no handle, removing stale entry", ruleID+dnatSuffix)
+			delete(r.rules, ruleID+dnatSuffix)
+		} else if err := r.conn.DelRule(dnatRule); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete dnat rule: %w", err))
+		} else {
+			needsFlush = true
+		}
+	}
+
+	if masqRule, exists := r.rules[ruleID+snatSuffix]; exists {
+		found = true
+		if masqRule.Handle == 0 {
+			log.Warnf("snat rule %s has no handle, removing stale entry", ruleID+snatSuffix)
+			delete(r.rules, ruleID+snatSuffix)
+		} else if err := r.conn.DelRule(masqRule); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete snat rule: %w", err))
+		} else {
+			needsFlush = true
+		}
+	}
+
+	if needsFlush {
+		if err := r.conn.Flush(); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf(flushError, err))
+		}
+	}
+
+	if merr != nil {
+		return nberrors.FormatErrorOrNil(merr)
+	}
+
+	delete(r.rules, ruleID+dnatSuffix)
+	delete(r.rules, ruleID+snatSuffix)
+
+	// Release once, only if the rule was present and removed.
+	if found {
+		r.releaseForwarding()
+	}
+
+	return nil
+}
+
+// releaseForwarding drops one IP forwarding reference, logging any error.
+func (r *family) releaseForwarding() {
+	if err := r.ipFwdState.ReleaseForwarding(); err != nil {
+		log.Errorf("release IP forwarding: %v", err)
+	}
+}
+
+func (r *family) AddInboundDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("inbound-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if _, exists := r.rules[ruleID]; exists {
+		return nil
+	}
+
+	protoNum, err := r.af.protoNum(protocol)
+	if err != nil {
+		return fmt.Errorf("convert protocol to number: %w", err)
+	}
+
+	exprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 2},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 2,
+			Data:     []byte{protoNum},
+		},
+		&expr.Payload{
+			DestRegister: 3,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       2,
+			Len:          2,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 3,
+			Data:     binaryutil.BigEndian.PutUint16(originalPort),
+		},
+	}
+
+	bits := 32
+	if localAddr.Is6() {
+		bits = 128
+	}
+	exprs = append(exprs, prefixMatchExprs(r.af, netip.PrefixFrom(localAddr, bits), false)...)
+
+	exprs = append(exprs,
+		&expr.Immediate{
+			Register: 1,
+			Data:     localAddr.AsSlice(),
+		},
+		&expr.Immediate{
+			Register: 2,
+			Data:     binaryutil.BigEndian.PutUint16(translatedPort),
+		},
+		&expr.NAT{
+			Type:        expr.NATTypeDestNAT,
+			Family:      uint32(r.af.tableFamily),
+			RegAddrMin:  1,
+			RegProtoMin: 2,
+			RegProtoMax: 0,
+		},
+	)
+
+	dnatRule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingRdr],
+		Exprs:    exprs,
+		UserData: []byte(ruleID),
+	}
+	r.conn.AddRule(dnatRule)
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("add inbound DNAT rule: %w", err)
+	}
+
+	r.rules[ruleID] = dnatRule
+
+	return nil
+}
+
+// RemoveInboundDNAT removes an inbound DNAT rule.
+func (r *family) RemoveInboundDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	ruleID := firewall.RuleID(fmt.Sprintf("inbound-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	rule, exists := r.rules[ruleID]
+	if !exists {
+		return nil
+	}
+
+	if rule.Handle == 0 {
+		log.Warnf("inbound DNAT rule %s has no handle, removing stale entry", ruleID)
+		delete(r.rules, ruleID)
+		return nil
+	}
+
+	if err := r.conn.DelRule(rule); err != nil {
+		return fmt.Errorf("delete inbound DNAT rule %s: %w", ruleID, err)
+	}
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("flush delete inbound DNAT rule: %w", err)
+	}
+	delete(r.rules, ruleID)
+
+	return nil
+}
+
+// ensureNATOutputChain lazily creates the OUTPUT NAT chain on first use.
+func (r *family) ensureNATOutputChain() error {
+	if _, exists := r.chains[chainNameNATOutput]; exists {
+		return nil
+	}
+
+	r.chains[chainNameNATOutput] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameNATOutput,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookOutput,
+		Priority: nftables.ChainPriorityNATDest,
+		Type:     nftables.ChainTypeNAT,
+	})
+
+	if err := r.conn.Flush(); err != nil {
+		delete(r.chains, chainNameNATOutput)
+		return fmt.Errorf("create NAT output chain: %w", err)
+	}
+	return nil
+}
+
+// AddOutputDNAT adds an OUTPUT chain DNAT rule for locally-generated traffic.
+func (r *family) AddOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	ruleID := firewall.RuleID(fmt.Sprintf("output-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	if _, exists := r.rules[ruleID]; exists {
+		return nil
+	}
+
+	if err := r.ensureNATOutputChain(); err != nil {
+		return err
+	}
+
+	protoNum, err := r.af.protoNum(protocol)
+	if err != nil {
+		return fmt.Errorf("convert protocol to number: %w", err)
+	}
+
+	exprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{protoNum},
+		},
+		&expr.Payload{
+			DestRegister: 2,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       2,
+			Len:          2,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 2,
+			Data:     binaryutil.BigEndian.PutUint16(originalPort),
+		},
+	}
+
+	bits := 32
+	if localAddr.Is6() {
+		bits = 128
+	}
+	exprs = append(exprs, prefixMatchExprs(r.af, netip.PrefixFrom(localAddr, bits), false)...)
+
+	exprs = append(exprs,
+		&expr.Immediate{
+			Register: 1,
+			Data:     localAddr.AsSlice(),
+		},
+		&expr.Immediate{
+			Register: 2,
+			Data:     binaryutil.BigEndian.PutUint16(translatedPort),
+		},
+		&expr.NAT{
+			Type:        expr.NATTypeDestNAT,
+			Family:      uint32(r.af.tableFamily),
+			RegAddrMin:  1,
+			RegProtoMin: 2,
+		},
+	)
+
+	dnatRule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameNATOutput],
+		Exprs:    exprs,
+		UserData: []byte(ruleID),
+	}
+	r.conn.AddRule(dnatRule)
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("add output DNAT rule: %w", err)
+	}
+
+	r.rules[ruleID] = dnatRule
+
+	return nil
+}
+
+// RemoveOutputDNAT removes an OUTPUT chain DNAT rule.
+func (r *family) RemoveOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol, originalPort, translatedPort uint16) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	ruleID := firewall.RuleID(fmt.Sprintf("output-dnat-%s-%s-%d-%d", localAddr.String(), protocol, originalPort, translatedPort))
+
+	rule, exists := r.rules[ruleID]
+	if !exists {
+		return nil
+	}
+
+	if rule.Handle == 0 {
+		log.Warnf("output DNAT rule %s has no handle, removing stale entry", ruleID)
+		delete(r.rules, ruleID)
+		return nil
+	}
+
+	if err := r.conn.DelRule(rule); err != nil {
+		return fmt.Errorf("delete output DNAT rule %s: %w", ruleID, err)
+	}
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("flush delete output DNAT rule: %w", err)
+	}
+	delete(r.rules, ruleID)
+
+	return nil
+}

client/firewall/nftables/family_linux.go

@@ -0,0 +1,249 @@
+//go:build !android
+
+package nftables
+
+import (
+	"fmt"
+	"net/netip"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/google/nftables"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	"github.com/netbirdio/netbird/client/firewall/firewalld"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/internal/routemanager/ipfwdstate"
+	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
+)
+
+const (
+	tableNat      = "nat"
+	tableMangle   = "mangle"
+	tableRaw      = "raw"
+	tableSecurity = "security"
+
+	chainNameNatPrerouting = "PREROUTING"
+	chainNameRoutingFw     = "netbird-rt-fwd"
+	chainNameRoutingNat    = "netbird-rt-postrouting"
+	chainNameRoutingRdr    = "netbird-rt-redirect"
+	chainNameNATOutput     = "netbird-nat-output"
+	chainNameForward       = "FORWARD"
+	chainNameMangleForward = "netbird-mangle-forward"
+
+	// Peer ACL chain names.
+	chainNameInputRules        = "netbird-acl-input-rules"
+	chainNameInputFilter       = "netbird-acl-input-filter"
+	chainNameForwardFilter     = "netbird-acl-forward-filter"
+	chainNameManglePrerouting  = "netbird-mangle-prerouting"
+	chainNameManglePostrouting = "netbird-mangle-postrouting"
+
+	flushError = "flush: %w"
+
+	firewalldTableName = "firewalld"
+
+	userDataAcceptForwardRuleIif = "frwacceptiif"
+	userDataAcceptForwardRuleOif = "frwacceptoif"
+	userDataAcceptInputRule      = "inputaccept"
+
+	dnatSuffix firewall.RuleID = "_dnat"
+	snatSuffix firewall.RuleID = "_snat"
+
+	// ipv4TCPHeaderSize is the minimum IPv4 (20) + TCP (20) header size for MSS calculation.
+	ipv4TCPHeaderSize = 40
+	// ipv6TCPHeaderSize is the minimum IPv6 (40) + TCP (20) header size for MSS calculation.
+	ipv6TCPHeaderSize = 60
+
+	// maxPrefixesSet 1638 prefixes start to fail, taking some margin
+	maxPrefixesSet       = 1500
+	refreshRulesMapError = "refresh rules map: %w"
+)
+
+var (
+	errFilterTableNotFound = fmt.Errorf("'filter' table not found")
+)
+
+type setInput struct {
+	set      firewall.Set
+	prefixes []netip.Prefix
+}
+
+// family holds the per-address-family nftables state. One instance
+// handles route ACLs, peer ACLs, NAT, DNAT, and MSS clamping for a
+// single family; the top-level Manager owns one for v4 and another
+// for v6. The name predates the peer-ACL absorption; it's effectively
+// the per-family backend now.
+type family struct {
+	conn        *nftables.Conn
+	workTable   *nftables.Table
+	filterTable *nftables.Table
+	chains      map[string]*nftables.Chain
+
+	// filters holds peer + route filter rules keyed by content hash.
+	// AddFilterRule writes here; DeleteFilterRule looks up by id.
+	filters map[firewall.RuleID]*Rule
+
+	// rules holds NAT, DNAT, and external accept rules (auxiliary
+	// plumbing that isn't a filter rule).
+	rules map[firewall.RuleID]*nftables.Rule
+
+	// Peer ACL chain handles.
+	chainInputRules    *nftables.Chain
+	chainPrerouting    *nftables.Chain
+	routingFwChainName string
+
+	ipsetCounter *refcounter.Counter[string, setInput, *nftables.Set]
+
+	af               addrFamily
+	wgIface          iFaceMapper
+	ipFwdState       *ipfwdstate.IPForwardingState
+	legacyManagement bool
+	mtu              uint16
+}
+
+func newFamily(workTable *nftables.Table, wgIface iFaceMapper, mtu uint16) *family {
+	r := &family{
+		conn:               &nftables.Conn{},
+		workTable:          workTable,
+		chains:             make(map[string]*nftables.Chain),
+		filters:            make(map[firewall.RuleID]*Rule),
+		rules:              make(map[firewall.RuleID]*nftables.Rule),
+		routingFwChainName: chainNameRoutingFw,
+		af:                 familyForAddr(workTable.Family == nftables.TableFamilyIPv4),
+		wgIface:            wgIface,
+		ipFwdState:         ipfwdstate.NewIPForwardingState(),
+		mtu:                mtu,
+	}
+
+	r.ipsetCounter = refcounter.New(
+		r.createIpSet,
+		r.deleteIpSet,
+	)
+
+	var err error
+	r.filterTable, err = r.loadFilterTable()
+	if err != nil {
+		log.Debugf("ip filter table not found: %v", err)
+	}
+
+	return r
+}
+
+func (r *family) init(workTable *nftables.Table) error {
+	r.workTable = workTable
+
+	if err := r.removeAcceptFilterRules(); err != nil {
+		log.Errorf("failed to clean up rules from filter table: %s", err)
+	}
+
+	if err := r.createContainers(); err != nil {
+		return fmt.Errorf("create containers: %w", err)
+	}
+
+	if err := r.setupDataPlaneMark(); err != nil {
+		log.Errorf("failed to set up data plane mark: %v", err)
+	}
+
+	if err := r.createDefaultChains(); err != nil {
+		return fmt.Errorf("create default acl chains: %w", err)
+	}
+
+	return nil
+}
+
+// Reset cleans existing nftables filter table rules from the system
+func (r *family) Reset() error {
+	// clear without deleting the ipsets, the nf table will be deleted by the caller
+	r.ipsetCounter.Clear()
+
+	var merr *multierror.Error
+
+	if err := r.removeAcceptFilterRules(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("remove accept filter rules: %w", err))
+	}
+
+	if err := firewalld.UntrustInterface(r.wgIface.Name()); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := r.removeNatPreroutingRules(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("remove filter prerouting rules: %w", err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) loadFilterTable() (*nftables.Table, error) {
+	tables, err := r.conn.ListTablesOfFamily(r.af.tableFamily)
+	if err != nil {
+		return nil, fmt.Errorf("list tables: %w", err)
+	}
+
+	for _, table := range tables {
+		if table.Name == "filter" {
+			return table, nil
+		}
+	}
+
+	return nil, errFilterTableNotFound
+}
+
+func hookName(hook *nftables.ChainHook) string {
+	if hook == nil {
+		return "unknown"
+	}
+	switch *hook {
+	case *nftables.ChainHookForward:
+		return chainNameForward
+	case *nftables.ChainHookInput:
+		return chainNameInput
+	default:
+		return fmt.Sprintf("hook(%d)", *hook)
+	}
+}
+
+func familyName(family nftables.TableFamily) string {
+	switch family {
+	case nftables.TableFamilyIPv4:
+		return "ip"
+	case nftables.TableFamilyIPv6:
+		return "ip6"
+	case nftables.TableFamilyINet:
+		return "inet"
+	default:
+		return fmt.Sprintf("family(%d)", family)
+	}
+}
+
+func (r *family) iptablesProto() iptables.Protocol {
+	if r.af.tableFamily == nftables.TableFamilyIPv6 {
+		return iptables.ProtocolIPv6
+	}
+	return iptables.ProtocolIPv4
+}
+
+func (r *family) refreshRulesMap() error {
+	var merr *multierror.Error
+	newRules := make(map[firewall.RuleID]*nftables.Rule)
+	for _, chain := range r.chains {
+		rules, err := r.conn.GetRules(chain.Table, chain)
+		if err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("list rules for chain %s: %w", chain.Name, err))
+			// preserve existing entries for this chain since we can't verify their state
+			for k, v := range r.rules {
+				if v.Chain != nil && v.Chain.Name == chain.Name {
+					newRules[k] = v
+				}
+			}
+			continue
+		}
+		for _, rule := range rules {
+			if len(rule.UserData) > 0 {
+				newRules[firewall.RuleID(rule.UserData)] = rule
+			}
+		}
+	}
+	r.rules = newRules
+	return nberrors.FormatErrorOrNil(merr)
+}

client/firewall/nftables/filter_linux.go

@@ -0,0 +1,512 @@
+//go:build !android
+
+package nftables
+
+import (
+	"fmt"
+	"net"
+	"net/netip"
+	"slices"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/expr"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbid "github.com/netbirdio/netbird/client/internal/acl/id"
+)
+
+// AddFilterRule installs one nftables packet-filter rule. With
+// destination empty the rule goes to the peer ACL input chain plus a
+// paired prerouting mangle rule for the redirect mark. With
+// destination set (prefix or named set) it goes to the route ACL
+// forward chain. Multi-source rules collapse to one nftables rule
+// backed by the shared refcounted hash:net set.
+func (r *family) AddFilterRule(
+	id []byte,
+	sources []netip.Prefix,
+	destination firewall.Network,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
+	isRoute := !destination.IsZero()
+
+	ruleID := nbid.GenerateRuleID(sources, destination, proto, sPort, dPort, action)
+	if existing, ok := r.filters[ruleID]; ok {
+		return existing, nil
+	}
+
+	srcExprs, err := r.applyNetwork(sourceNetwork(sources), sources, true)
+	if err != nil {
+		return nil, fmt.Errorf("apply source: %w", err)
+	}
+
+	var exprs []expr.Any
+	if isRoute {
+		exprs, err = r.buildRouteFilterExprs(srcExprs, destination, proto, sPort, dPort)
+	} else {
+		exprs, err = r.buildPeerFilterExprs(srcExprs, proto, sPort, dPort)
+	}
+	if err != nil {
+		r.dropNetworkMatch(srcExprs)
+		return nil, err
+	}
+
+	mainExprs := slices.Clone(exprs)
+	verdict := expr.VerdictAccept
+	if action == firewall.ActionDrop {
+		verdict = expr.VerdictDrop
+	}
+	mainExprs = append(mainExprs, &expr.Verdict{Kind: verdict})
+
+	chain := r.chainInputRules
+	if isRoute {
+		chain = r.chains[chainNameRoutingFw]
+	}
+
+	userData := []byte(ruleID)
+
+	// Build the paired prerouting mangle rule before flushing so both
+	// rules commit in one transaction. An anonymous port set binds to
+	// exactly one rule, so the mangle rule needs its own expression list
+	// with fresh sets, not a clone of the main rule's. Guard on the
+	// prerouting chain first: building the expressions queues the port
+	// set, so skipping the build when there is no chain to bind it to
+	// keeps an unbound set out of the connection batch.
+	var mangleRule *nftables.Rule
+	if !isRoute && r.chainPrerouting != nil {
+		mangleExprs, err := r.buildPeerFilterExprs(srcExprs, proto, sPort, dPort)
+		if err != nil {
+			r.dropNetworkMatch(exprs)
+			return nil, fmt.Errorf("build mangle rule: %w", err)
+		}
+		mangleRule = r.queuePreroutingRule(mangleExprs, userData)
+	}
+
+	nftRule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    chain,
+		Exprs:    mainExprs,
+		UserData: userData,
+	}
+	if action == firewall.ActionDrop {
+		nftRule = r.conn.InsertRule(nftRule)
+	} else {
+		nftRule = r.conn.AddRule(nftRule)
+	}
+	if err := r.conn.Flush(); err != nil {
+		r.dropNetworkMatch(exprs)
+		return nil, fmt.Errorf(flushError, err)
+	}
+
+	rule := &Rule{
+		nftRule:    nftRule,
+		mangleRule: mangleRule,
+		sources:    sources,
+		id:         ruleID,
+	}
+	r.filters[ruleID] = rule
+
+	log.Debugf("added filter rule: sources=%v, destination=%v, proto=%v, sPort=%v, dPort=%v, action=%v",
+		sources, destination, proto, sPort, dPort, action)
+	return rule, nil
+}
+
+// buildPeerFilterExprs assembles the input-chain (peer ACL) match: the
+// IP-header protocol byte read via Payload, then source, then ports
+// (no counter), matching the historical peer shape so per-rule kernel
+// state is identical to pre-unification.
+func (r *family) buildPeerFilterExprs(
+	srcExprs []expr.Any,
+	proto firewall.Protocol,
+	sPort, dPort *firewall.Port,
+) ([]expr.Any, error) {
+	var exprs []expr.Any
+
+	if proto != firewall.ProtocolALL {
+		protoNum, err := r.af.protoNum(proto)
+		if err != nil {
+			return nil, fmt.Errorf("convert protocol to number: %w", err)
+		}
+		exprs = append(exprs,
+			&expr.Payload{
+				DestRegister: 1,
+				Base:         expr.PayloadBaseNetworkHeader,
+				Offset:       r.af.protoOffset,
+				Len:          1,
+			},
+			&expr.Cmp{Op: expr.CmpOpEq, Register: 1, Data: []byte{protoNum}},
+		)
+	}
+	exprs = append(exprs, srcExprs...)
+
+	portExprs, err := r.applyPorts(sPort, dPort)
+	if err != nil {
+		return nil, err
+	}
+	exprs = append(exprs, portExprs...)
+	return exprs, nil
+}
+
+// buildRouteFilterExprs assembles the forward-chain (route ACL) match:
+// source, then destination, then optional proto/ports, then a counter.
+func (r *family) buildRouteFilterExprs(
+	srcExprs []expr.Any,
+	destination firewall.Network,
+	proto firewall.Protocol,
+	sPort, dPort *firewall.Port,
+) ([]expr.Any, error) {
+	exprs := append([]expr.Any{}, srcExprs...)
+
+	destExprs, err := r.applyNetwork(destination, nil, false)
+	if err != nil {
+		return nil, fmt.Errorf("apply destination: %w", err)
+	}
+	exprs = append(exprs, destExprs...)
+
+	if proto != firewall.ProtocolALL {
+		protoNum, err := r.af.protoNum(proto)
+		if err != nil {
+			r.dropNetworkMatch(destExprs)
+			return nil, fmt.Errorf("convert protocol to number: %w", err)
+		}
+		exprs = append(exprs,
+			&expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 1},
+			&expr.Cmp{Op: expr.CmpOpEq, Register: 1, Data: []byte{protoNum}},
+		)
+
+		portExprs, err := r.applyPorts(sPort, dPort)
+		if err != nil {
+			r.dropNetworkMatch(destExprs)
+			return nil, err
+		}
+		exprs = append(exprs, portExprs...)
+	}
+
+	exprs = append(exprs, &expr.Counter{})
+	return exprs, nil
+}
+
+func (r *family) hasRule(id firewall.RuleID) bool {
+	_, ok := r.filters[id]
+	return ok
+}
+
+func (r *family) hasDNATRule(id firewall.RuleID) bool {
+	_, ok := r.rules[id+dnatSuffix]
+	return ok
+}
+
+// DeleteFilterRule removes a previously installed filter rule. Source
+// set references are recovered from the stored rule's expressions via
+// findSets and dropped from the shared refcounter.
+func (r *family) DeleteFilterRule(rule firewall.Rule) error {
+	ruleID := rule.ID()
+	pr, ok := r.filters[ruleID]
+	if !ok {
+		log.Debugf("filter rule %s not found", ruleID)
+		return nil
+	}
+
+	// A freshly added rule carries no handle until it is read back from
+	// the kernel, and Flush only refreshes the peer chains. Pull live
+	// handles for this rule's chain before deciding it is stale so route
+	// rules (which Flush never refreshes) can actually be deleted. A
+	// refresh failure aborts the delete without touching tracking state,
+	// so the caller can retry while the rule may still exist in the kernel.
+	if pr.nftRule.Handle == 0 {
+		if err := r.refreshRuleHandles(pr.nftRule.Chain, false); err != nil {
+			return fmt.Errorf("refresh handles for chain %s: %w", pr.nftRule.Chain.Name, err)
+		}
+	}
+	// Refresh the mangle handle independently: the main rule's handle can
+	// be populated while the prerouting refresh during Flush failed, and
+	// gating the mangle refresh on the main handle would leak the mangle
+	// rule on delete.
+	if pr.mangleRule != nil && pr.mangleRule.Handle == 0 {
+		if err := r.refreshRuleHandles(r.chainPrerouting, true); err != nil {
+			return fmt.Errorf("refresh mangle handles: %w", err)
+		}
+	}
+
+	if pr.nftRule.Handle == 0 {
+		log.Warnf("filter rule %s has no handle, removing stale entry", ruleID)
+		r.dropNetworkMatch(pr.nftRule.Exprs)
+		delete(r.filters, ruleID)
+		return nil
+	}
+
+	if err := r.conn.DelRule(pr.nftRule); err != nil {
+		log.Errorf("queue rule delete: %v", err)
+	}
+	if pr.mangleRule != nil {
+		if err := r.conn.DelRule(pr.mangleRule); err != nil {
+			log.Errorf("queue mangle rule delete: %v", err)
+		}
+	}
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("flush delete %s: %w", ruleID, err)
+	}
+
+	r.dropNetworkMatch(pr.nftRule.Exprs)
+	delete(r.filters, ruleID)
+	return nil
+}
+
+func (r *family) decrementSetCounter(rule *nftables.Rule) error {
+	if r.ipsetCounter == nil {
+		return nil
+	}
+	sets := findSets(rule)
+
+	var merr *multierror.Error
+	for _, setName := range sets {
+		if _, err := r.ipsetCounter.Decrement(setName); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("decrement set counter: %w", err))
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// dropNetworkMatch undoes whatever the source/destination match
+// reserved. Safe to call when the spec is empty or holds only inline
+// matchers.
+func (r *family) dropNetworkMatch(exprs []expr.Any) {
+	if r.ipsetCounter == nil {
+		return
+	}
+	for _, e := range exprs {
+		lookup, ok := e.(*expr.Lookup)
+		if !ok {
+			continue
+		}
+		if _, err := r.ipsetCounter.Decrement(lookup.SetName); err != nil {
+			log.Errorf("rollback ipset decrement %s: %v", lookup.SetName, err)
+		}
+	}
+}
+
+func (r *family) applyNetwork(
+	network firewall.Network,
+	setPrefixes []netip.Prefix,
+	isSource bool,
+) ([]expr.Any, error) {
+	if network.IsSet() {
+		exprs, err := r.getIpSet(network.Set, setPrefixes, isSource)
+		if err != nil {
+			side := "destination"
+			if isSource {
+				side = "source"
+			}
+			return nil, fmt.Errorf("%s set: %w", side, err)
+		}
+		return exprs, nil
+	}
+
+	if network.IsPrefix() {
+		return prefixMatchExprs(r.af, network.Prefix, isSource), nil
+	}
+
+	return nil, nil
+}
+
+// applyPort builds the transport-header port match. A single value
+// compares directly, a range uses a range expression, and multiple
+// values go through an anonymous constant set: consecutive cmp
+// expressions AND together, so chained equality comparisons could
+// never match more than one port. The set is queued on the
+// connection and committed by the caller's flush together with the
+// rule that binds it.
+func (r *family) applyPort(port *firewall.Port, isSource bool) ([]expr.Any, error) {
+	if port == nil || len(port.Values) == 0 {
+		return nil, nil
+	}
+
+	// dst port
+	offset := uint32(2)
+	if isSource {
+		// src port
+		offset = 0
+	}
+
+	exprs := []expr.Any{
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       offset,
+			Len:          2,
+		},
+	}
+
+	switch {
+	case port.IsRange && len(port.Values) == 2:
+		exprs = append(exprs, &expr.Range{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			FromData: binaryutil.BigEndian.PutUint16(port.Values[0]),
+			ToData:   binaryutil.BigEndian.PutUint16(port.Values[1]),
+		})
+	case len(port.Values) == 1:
+		exprs = append(exprs, &expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     binaryutil.BigEndian.PutUint16(port.Values[0]),
+		})
+	default:
+		lookup, err := r.anonymousPortSet(port.Values)
+		if err != nil {
+			return nil, err
+		}
+		exprs = append(exprs, lookup)
+	}
+
+	return exprs, nil
+}
+
+// anonymousPortSet queues an anonymous constant set holding the given
+// ports on the connection and returns a lookup against it. The set is
+// committed by the caller's flush together with the rule that binds it.
+func (r *family) anonymousPortSet(values []uint16) (*expr.Lookup, error) {
+	set := &nftables.Set{
+		Anonymous: true,
+		Constant:  true,
+		Table:     r.workTable,
+		KeyType:   nftables.TypeInetService,
+	}
+	elements := make([]nftables.SetElement, 0, len(values))
+	for _, p := range values {
+		elements = append(elements, nftables.SetElement{Key: binaryutil.BigEndian.PutUint16(p)})
+	}
+	if err := r.conn.AddSet(set, elements); err != nil {
+		return nil, fmt.Errorf("add anonymous port set: %w", err)
+	}
+	return &expr.Lookup{
+		SourceRegister: 1,
+		SetID:          set.ID,
+		SetName:        set.Name,
+	}, nil
+}
+
+// applyPorts builds the source then destination port matches.
+func (r *family) applyPorts(sPort, dPort *firewall.Port) ([]expr.Any, error) {
+	sPortExprs, err := r.applyPort(sPort, true)
+	if err != nil {
+		return nil, fmt.Errorf("apply source port: %w", err)
+	}
+
+	dPortExprs, err := r.applyPort(dPort, false)
+	if err != nil {
+		return nil, fmt.Errorf("apply destination port: %w", err)
+	}
+
+	return append(sPortExprs, dPortExprs...), nil
+}
+
+// prefixMatchExprs is the family-aware match sequence for a CIDR
+// prefix. /0 returns nil; a host prefix (full bit length for the
+// family) skips the bitwise step since the mask is all-ones. Shared
+// between family and aclManager so both treat single prefixes
+// identically.
+func prefixMatchExprs(af addrFamily, prefix netip.Prefix, isSource bool) []expr.Any {
+	offset := af.dstAddrOffset
+	if isSource {
+		offset = af.srcAddrOffset
+	}
+
+	ones := prefix.Bits()
+	if ones == 0 {
+		return nil
+	}
+
+	payload := &expr.Payload{
+		DestRegister: 1,
+		Base:         expr.PayloadBaseNetworkHeader,
+		Offset:       offset,
+		Len:          af.addrLen,
+	}
+	cmp := &expr.Cmp{
+		Op:       expr.CmpOpEq,
+		Register: 1,
+		Data:     prefix.Masked().Addr().AsSlice(),
+	}
+
+	if ones == af.totalBits {
+		return []expr.Any{payload, cmp}
+	}
+
+	mask := net.CIDRMask(ones, af.totalBits)
+	xor := make([]byte, af.addrLen)
+	return []expr.Any{
+		payload,
+		&expr.Bitwise{
+			DestRegister:   1,
+			SourceRegister: 1,
+			Len:            af.addrLen,
+			Mask:           mask,
+			Xor:            xor,
+		},
+		cmp,
+	}
+}
+
+func getCtNewExprs() []expr.Any {
+	return []expr.Any{
+		&expr.Ct{
+			Key:      expr.CtKeySTATE,
+			Register: 1,
+		},
+		&expr.Bitwise{
+			SourceRegister: 1,
+			DestRegister:   1,
+			Len:            4,
+			Mask:           binaryutil.NativeEndian.PutUint32(expr.CtStateBitNEW),
+			Xor:            binaryutil.NativeEndian.PutUint32(0),
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpNeq,
+			Register: 1,
+			Data:     []byte{0, 0, 0, 0},
+		},
+	}
+}
+
+// sourceNetwork classifies a source-prefix list into the firewall.Network
+// shape the rest of the spec-builder consumes: empty for match-any, a
+// single prefix inline, or an ipset for multiple sources.
+func sourceNetwork(sources []netip.Prefix) firewall.Network {
+	switch {
+	case len(sources) == 0:
+		return firewall.Network{}
+	case len(sources) == 1 && sources[0].Bits() == 0:
+		return firewall.Network{}
+	case len(sources) == 1:
+		return firewall.Network{Prefix: sources[0]}
+	default:
+		return firewall.Network{Set: firewall.NewPrefixSet(sources)}
+	}
+}
+
+func ifname(n string) []byte {
+	b := make([]byte, 16)
+	copy(b, n+"\x00")
+	return b
+}
+
+// findSets scans an nftables rule's expressions for expr.Lookup and
+// returns the named sets in occurrence order. Used at delete time to
+// drop ipsetCounter references; peer and route ACLs go through it.
+func findSets(rule *nftables.Rule) []string {
+	var sets []string
+	for _, e := range rule.Exprs {
+		if lookup, ok := e.(*expr.Lookup); ok {
+			sets = append(sets, lookup.SetName)
+		}
+	}
+	return sets
+}

client/firewall/nftables/interface_allower_integration_linux_test.go

@@ -0,0 +1,90 @@
+//go:build privileged
+
+package nftables
+
+import (
+	"bytes"
+	"os"
+	"testing"
+
+	"github.com/google/nftables"
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/client/iface"
+)
+
+// TestInterfaceAllowerInputOnly verifies the userspace-mode allower opens the
+// interface on the INPUT hook of foreign chains only (not FORWARD, since the
+// userspace router never forwards in the kernel), creates no netbird work
+// table, and removes its rules on Close.
+func TestInterfaceAllowerInputOnly(t *testing.T) {
+	if os.Geteuid() != 0 {
+		t.Skip("root required")
+	}
+
+	require.False(t, ipTableExists(t, getTableName()), "precondition: no stale netbird table")
+
+	conn := &nftables.Conn{}
+	extTable := conn.AddTable(&nftables.Table{Name: "nbtest_extchains", Family: nftables.TableFamilyINet})
+	inputChain := conn.AddChain(&nftables.Chain{
+		Name: "ext_input", Table: extTable,
+		Hooknum: nftables.ChainHookInput, Priority: nftables.ChainPriorityFilter, Type: nftables.ChainTypeFilter,
+	})
+	forwardChain := conn.AddChain(&nftables.Chain{
+		Name: "ext_forward", Table: extTable,
+		Hooknum: nftables.ChainHookForward, Priority: nftables.ChainPriorityFilter, Type: nftables.ChainTypeFilter,
+	})
+	require.NoError(t, conn.Flush(), "create external table and chains")
+	t.Cleanup(func() {
+		c := &nftables.Conn{}
+		c.DelTable(extTable)
+		_ = c.Flush()
+	})
+
+	allower, err := NewInterfaceAllower(ifaceMock, iface.DefaultMTU)
+	require.NoError(t, err, "create allower")
+	require.NoError(t, allower.Apply(), "apply")
+
+	require.True(t, chainHasUserData(t, extTable, inputChain, userDataAcceptInputRule),
+		"external INPUT chain should get the accept rule")
+	require.Len(t, listRules(t, extTable, forwardChain), 0,
+		"external FORWARD chain must not be opened in userspace mode")
+	require.False(t, ipTableExists(t, getTableName()),
+		"allower must not create a netbird work table")
+
+	require.NoError(t, allower.Close(), "close")
+	require.False(t, chainHasUserData(t, extTable, inputChain, userDataAcceptInputRule),
+		"accept rule should be removed on close")
+}
+
+func listRules(t *testing.T, table *nftables.Table, chain *nftables.Chain) []*nftables.Rule {
+	t.Helper()
+	c := &nftables.Conn{}
+	rules, err := c.GetRules(table, chain)
+	require.NoError(t, err)
+	return rules
+}
+
+func chainHasUserData(t *testing.T, table *nftables.Table, chain *nftables.Chain, ud string) bool {
+	for _, r := range listRules(t, table, chain) {
+		if bytes.Equal(r.UserData, []byte(ud)) {
+			return true
+		}
+	}
+	return false
+}
+
+func ipTableExists(t *testing.T, name string) bool {
+	t.Helper()
+	c := &nftables.Conn{}
+	for _, fam := range []nftables.TableFamily{nftables.TableFamilyIPv4, nftables.TableFamilyIPv6} {
+		tbls, err := c.ListTablesOfFamily(fam)
+		require.NoError(t, err)
+		for _, tb := range tbls {
+			if tb.Name == name {
+				return true
+			}
+		}
+	}
+	return false
+}

client/firewall/nftables/interface_allower_linux.go

@@ -0,0 +1,107 @@
+package nftables
+
+import (
+	"fmt"
+
+	"github.com/google/nftables"
+	"github.com/hashicorp/go-multierror"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+)
+
+// InterfaceAllower opens the NetBird interface in the kernel's filter table and
+// external chains and keeps them reconciled via a netlink monitor, so the host
+// firewall doesn't drop traffic the NetBird firewall handles. It is used by the
+// userspace firewall, where routing happens in the forwarder, so only INPUT is
+// opened (the userspace router never forwards in the kernel).
+//
+// It owns its own families/connection and never creates a netbird work table.
+// firewalld trust is handled by the caller, not here. Its operations are serial
+// (Apply before the monitor starts; reconciles run on the single monitor
+// goroutine; Close stops the monitor before removing), so it needs no locking.
+//
+// TODO: this opens nftables and the iptables-nft filter table (detected via
+// nft), but not a legacy-iptables ruleset running in parallel with nftables.
+// Such a host would keep its legacy filter chains closed for the interface.
+type InterfaceAllower struct {
+	family4    *family
+	family6    *family
+	extMonitor *externalChainMonitor
+}
+
+// NewInterfaceAllower builds an allower for the given interface. It returns an
+// error when nftables is unavailable (e.g. an iptables-legacy host), so the
+// caller can fall back to firewalld trust.
+func NewInterfaceAllower(wgIface iFaceMapper, mtu uint16) (*InterfaceAllower, error) {
+	tableName := getTableName()
+
+	family4 := newFamily(&nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv4}, wgIface, mtu)
+
+	// Probe nftables availability before committing to this backend.
+	if _, err := family4.conn.ListChainsOfTableFamily(nftables.TableFamilyINet); err != nil {
+		return nil, fmt.Errorf("nftables not available: %w", err)
+	}
+
+	a := &InterfaceAllower{family4: family4}
+
+	if wgIface.Address().HasIPv6() {
+		a.family6 = newFamily(&nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv6}, wgIface, mtu)
+	}
+
+	a.extMonitor = newExternalChainMonitor(a)
+	return a, nil
+}
+
+// Apply opens the interface (INPUT only) in the foreign filter chains and starts
+// reconciling them on nftables changes.
+func (a *InterfaceAllower) Apply() error {
+	var merr *multierror.Error
+	for _, f := range a.families() {
+		// Remove any stale accepts first so a prior unclean exit (e.g. SIGKILL,
+		// where Close never ran) is recovered deterministically rather than
+		// accumulating duplicate rules on the iptables filter table.
+		if err := f.removeAcceptFilterRules(); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("clean stale accept rules: %w", err))
+		}
+		if err := f.openInterface(false); err != nil {
+			merr = multierror.Append(merr, err)
+		}
+	}
+
+	a.extMonitor.start()
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// families returns the configured address families (v4, and v6 when present).
+func (a *InterfaceAllower) families() []*family {
+	families := []*family{a.family4}
+	if a.family6 != nil {
+		families = append(families, a.family6)
+	}
+	return families
+}
+
+// reconcileExternalChains re-applies the INPUT accepts to external chains. It
+// implements externalChainReconciler for the monitor.
+func (a *InterfaceAllower) reconcileExternalChains() error {
+	var merr *multierror.Error
+	for _, f := range a.families() {
+		if err := f.acceptExternalChainsRules(false); err != nil {
+			merr = multierror.Append(merr, err)
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// Close stops the monitor and removes the accept rules.
+func (a *InterfaceAllower) Close() error {
+	a.extMonitor.stop()
+
+	var merr *multierror.Error
+	for _, f := range a.families() {
+		if err := f.removeAcceptFilterRules(); err != nil {
+			merr = multierror.Append(merr, err)
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}

client/firewall/nftables/ipset_linux.go

@@ -0,0 +1,210 @@
+//go:build !android
+
+package nftables
+
+import (
+	"encoding/binary"
+	"fmt"
+	"net/netip"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/expr"
+	log "github.com/sirupsen/logrus"
+
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
+)
+
+func (r *family) getIpSet(set firewall.Set, prefixes []netip.Prefix, isSource bool) ([]expr.Any, error) {
+	ref, err := r.ipsetCounter.Increment(set.HashedName(), setInput{
+		set:      set,
+		prefixes: prefixes,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("create or get ipset: %w", err)
+	}
+
+	return r.getIpSetExprs(ref, isSource)
+}
+
+func (r *family) createIpSet(setName string, input setInput) (*nftables.Set, error) {
+	// overlapping prefixes will result in an error, so we need to merge them
+	prefixes := firewall.MergeIPRanges(input.prefixes)
+
+	nfset := &nftables.Set{
+		Name:    setName,
+		Comment: input.set.Comment(),
+		Table:   r.workTable,
+		// required for prefixes
+		Interval: true,
+		KeyType:  r.af.setKeyType,
+	}
+
+	elements := r.convertPrefixesToSet(prefixes)
+	nElements := len(elements)
+
+	maxElements := maxPrefixesSet * 2
+	initialElements := elements[:min(maxElements, nElements)]
+
+	if err := r.conn.AddSet(nfset, initialElements); err != nil {
+		return nil, fmt.Errorf("error adding set %s: %w", setName, err)
+	}
+	if err := r.conn.Flush(); err != nil {
+		return nil, fmt.Errorf("flush error: %w", err)
+	}
+	log.Debugf("Created new ipset: %s with %d initial prefixes (total prefixes %d)", setName, len(initialElements)/2, len(prefixes))
+
+	// The set is committed now. If a later batch fails, destroy it: the
+	// refcounter records nothing on a create-callback error, so it would
+	// otherwise leak, and a partial source set fails-open for deny rules.
+	if err := r.addRemainingElements(nfset, elements, maxElements); err != nil {
+		if derr := r.deleteIpSet(setName, nfset); derr != nil {
+			log.Warnf("rollback ipset %s after add failure: %v", setName, derr)
+		}
+		return nil, err
+	}
+
+	log.Infof("Created new ipset: %s with %d prefixes", setName, len(prefixes))
+	return nfset, nil
+}
+
+// addRemainingElements adds element batches beyond the initial one in
+// maxElements-sized chunks, flushing each. Called after the set has been
+// created with its first batch.
+func (r *family) addRemainingElements(nfset *nftables.Set, elements []nftables.SetElement, maxElements int) error {
+	nElements := len(elements)
+	for subStart := maxElements; subStart < nElements; subStart += maxElements {
+		subEnd := min(subStart+maxElements, nElements)
+		subElement := elements[subStart:subEnd]
+		nSubPrefixes := len(subElement) / 2
+		log.Tracef("Adding new prefixes (%d) in ipset: %s", nSubPrefixes, nfset.Name)
+		if err := r.conn.SetAddElements(nfset, subElement); err != nil {
+			return fmt.Errorf("error adding prefixes (%d) to set %s: %w", nSubPrefixes, nfset.Name, err)
+		}
+		if err := r.conn.Flush(); err != nil {
+			return fmt.Errorf("flush error: %w", err)
+		}
+		log.Debugf("Added new prefixes (%d) in ipset: %s", nSubPrefixes, nfset.Name)
+	}
+	return nil
+}
+
+func (r *family) convertPrefixesToSet(prefixes []netip.Prefix) []nftables.SetElement {
+	var elements []nftables.SetElement
+	for _, prefix := range prefixes {
+		// nftables needs half-open intervals [firstIP, lastIP) for prefixes
+		// e.g. 10.0.0.0/24 becomes [10.0.0.0, 10.0.1.0), 10.1.1.1/32 becomes [10.1.1.1, 10.1.1.2) etc
+		firstIP := prefix.Addr()
+
+		// For a /0 the last address is the broadcast and its Next() overflows
+		// to an invalid Addr with an empty key, so wrap to the zero address,
+		// which nftables reads as the open end of a full-range interval.
+		var lastKey []byte
+		if prefix.Bits() == 0 {
+			lastKey = make([]byte, r.af.addrLen)
+		} else {
+			lastKey = calculateLastIP(prefix).Next().AsSlice()
+		}
+
+		// the nft tool also adds a zero-address IntervalEnd element, see https://github.com/google/nftables/issues/247
+		// nftables.SetElement{Key: make([]byte, r.af.addrLen), IntervalEnd: true},
+		elements = append(elements,
+			nftables.SetElement{Key: firstIP.AsSlice()},
+			nftables.SetElement{Key: lastKey, IntervalEnd: true},
+		)
+	}
+	return elements
+}
+
+// calculateLastIP determines the last IP in a given prefix.
+func calculateLastIP(prefix netip.Prefix) netip.Addr {
+	masked := prefix.Masked()
+	if masked.Addr().Is4() {
+		hostMask := ^uint32(0) >> masked.Bits()
+		lastIP := uint32FromNetipAddr(masked.Addr()) | hostMask
+		return netip.AddrFrom4(uint32ToBytes(lastIP))
+	}
+
+	// IPv6: set host bits to all 1s
+	b := masked.Addr().As16()
+	bits := masked.Bits()
+	for i := bits; i < 128; i++ {
+		b[i/8] |= 1 << (7 - i%8)
+	}
+	return netip.AddrFrom16(b)
+}
+
+// Utility function to convert netip.Addr to uint32.
+func uint32FromNetipAddr(addr netip.Addr) uint32 {
+	b := addr.As4()
+	return binary.BigEndian.Uint32(b[:])
+}
+
+// Utility function to convert uint32 to a netip-compatible byte slice.
+func uint32ToBytes(ip uint32) [4]byte {
+	var b [4]byte
+	binary.BigEndian.PutUint32(b[:], ip)
+	return b
+}
+
+func (r *family) deleteIpSet(setName string, nfset *nftables.Set) error {
+	r.conn.DelSet(nfset)
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf(flushError, err)
+	}
+
+	log.Debugf("Deleted unused ipset %s", setName)
+	return nil
+}
+
+func (r *family) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
+	nfset, err := r.conn.GetSetByName(r.workTable, set.HashedName())
+	if err != nil {
+		return fmt.Errorf("get set %s: %w", set.HashedName(), err)
+	}
+
+	// Overlapping prefixes (e.g. duplicate resolved addresses) make the
+	// interval set reject the batch, so merge them as createIpSet does.
+	prefixes = firewall.MergeIPRanges(prefixes)
+	elements := r.convertPrefixesToSet(prefixes)
+
+	// Add in batches sized like createIpSet so a large update does not
+	// exceed the netlink message size limit.
+	maxElements := maxPrefixesSet * 2
+	for start := 0; start < len(elements); start += maxElements {
+		end := min(start+maxElements, len(elements))
+		if err := r.conn.SetAddElements(nfset, elements[start:end]); err != nil {
+			return fmt.Errorf("add elements to set %s: %w", set.HashedName(), err)
+		}
+		if err := r.conn.Flush(); err != nil {
+			return fmt.Errorf(flushError, err)
+		}
+	}
+
+	log.Debugf("updated set %s with %d prefixes", set.HashedName(), len(prefixes))
+
+	return nil
+}
+
+func (r *family) getIpSetExprs(ref refcounter.Ref[*nftables.Set], isSource bool) ([]expr.Any, error) {
+	// dst offset by default
+	offset := r.af.dstAddrOffset
+	if isSource {
+		// src offset
+		offset = r.af.srcAddrOffset
+	}
+
+	return []expr.Any{
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       offset,
+			Len:          r.af.addrLen,
+		},
+		&expr.Lookup{
+			SourceRegister: 1,
+			SetName:        ref.Out.Name,
+			SetID:          ref.Out.ID,
+		},
+	}, nil
+}

client/firewall/nftables/ipset_linux_test.go

@@ -0,0 +1,36 @@
+package nftables
+
+import (
+	"net/netip"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+// TestConvertPrefixesToSetWildcard verifies that a /0 prefix produces a
+// usable interval. The last address of a /0 is the broadcast, whose Next()
+// overflows to an invalid Addr with an empty key; the IntervalEnd must wrap
+// to the zero address instead so nftables sees a full-range interval.
+func TestConvertPrefixesToSetWildcard(t *testing.T) {
+	tests := []struct {
+		name   string
+		af     addrFamily
+		prefix string
+	}{
+		{"IPv4 /0", afIPv4, "0.0.0.0/0"},
+		{"IPv6 /0", afIPv6, "::/0"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := &family{af: tt.af}
+			elements := r.convertPrefixesToSet([]netip.Prefix{netip.MustParsePrefix(tt.prefix)})
+
+			require.Len(t, elements, 2, "expected start and interval-end element")
+			assert.False(t, elements[0].IntervalEnd, "first element is the interval start")
+			assert.True(t, elements[1].IntervalEnd, "second element is the interval end")
+			assert.Len(t, elements[1].Key, int(tt.af.addrLen), "interval-end key must be a zero address, not empty")
+		})
+	}
+}

client/firewall/nftables/ipsetstore_linux.go

@@ -1,85 +0,0 @@
-package nftables
-
-import (
-	"net"
-)
-
-type ipsetStore struct {
-	ipsetReference map[string]int
-	ipsets         map[string]map[string]struct{} // ipsetName -> list of ips
-}
-
-func newIpsetStore() *ipsetStore {
-	return &ipsetStore{
-		ipsetReference: make(map[string]int),
-		ipsets:         make(map[string]map[string]struct{}),
-	}
-}
-
-func (s *ipsetStore) ips(ipsetName string) (map[string]struct{}, bool) {
-	r, ok := s.ipsets[ipsetName]
-	return r, ok
-}
-
-func (s *ipsetStore) newIpset(ipsetName string) map[string]struct{} {
-	s.ipsetReference[ipsetName] = 0
-	ipList := make(map[string]struct{})
-	s.ipsets[ipsetName] = ipList
-	return ipList
-}
-
-func (s *ipsetStore) deleteIpset(ipsetName string) {
-	delete(s.ipsetReference, ipsetName)
-	delete(s.ipsets, ipsetName)
-}
-
-func (s *ipsetStore) DeleteIpFromSet(ipsetName string, ip net.IP) {
-	ipList, ok := s.ipsets[ipsetName]
-	if !ok {
-		return
-	}
-	delete(ipList, ip.String())
-}
-
-func (s *ipsetStore) AddIpToSet(ipsetName string, ip net.IP) {
-	ipList, ok := s.ipsets[ipsetName]
-	if !ok {
-		return
-	}
-	ipList[ip.String()] = struct{}{}
-}
-
-func (s *ipsetStore) IsIpInSet(ipsetName string, ip net.IP) bool {
-	ipList, ok := s.ipsets[ipsetName]
-	if !ok {
-		return false
-	}
-	_, ok = ipList[ip.String()]
-	return ok
-}
-
-func (s *ipsetStore) AddReferenceToIpset(ipsetName string) {
-	s.ipsetReference[ipsetName]++
-}
-
-func (s *ipsetStore) DeleteReferenceFromIpSet(ipsetName string) {
-	r, ok := s.ipsetReference[ipsetName]
-	if !ok {
-		return
-	}
-	if r == 0 {
-		return
-	}
-	s.ipsetReference[ipsetName]--
-}
-
-func (s *ipsetStore) HasReferenceToSet(ipsetName string) bool {
-	if _, ok := s.ipsetReference[ipsetName]; !ok {
-		return false
-	}
-	if s.ipsetReference[ipsetName] == 0 {
-		return false
-	}
-
-	return true
-}

client/firewall/nftables/manager_linux.go

@@ -3,7 +3,6 @@ package nftables
 import (
 	"context"
 	"fmt"
-	"net"
 	"net/netip"
 	"os"
 	"sync"
@@ -16,7 +15,6 @@ import (
 	"golang.org/x/sys/unix"
 
 	nberrors "github.com/netbirdio/netbird/client/errors"
-	"github.com/netbirdio/netbird/client/firewall/firewalld"
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 	"github.com/netbirdio/netbird/client/internal/statemanager"
@@ -45,18 +43,17 @@ type iFaceMapper interface {
 	Address() wgaddr.Address
 }
 
-// Manager of iptables firewall
+// Manager of nftables firewall. Per-family state (peer ACLs, route
+// ACLs, NAT, DNAT, MSS clamping) lives on family; Manager dispatches
+// by family and provides the public firewall.Manager surface.
 type Manager struct {
 	mutex   sync.Mutex
 	rConn   *nftables.Conn
 	wgIface iFaceMapper
 
-	router     *router
-	aclManager *AclManager
-
-	// IPv6 counterparts, nil when no v6 overlay
-	router6     *router
-	aclManager6 *AclManager
+	family4 *family
+	// IPv6 counterpart, nil when no v6 overlay.
+	family6 *family
 
 	notrackOutputChain     *nftables.Chain
 	notrackPreroutingChain *nftables.Chain
@@ -74,21 +71,10 @@ func Create(wgIface iFaceMapper, mtu uint16) (*Manager, error) {
 	tableName := getTableName()
 	workTable := &nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv4}
 
-	var err error
-	m.router, err = newRouter(workTable, wgIface, mtu)
-	if err != nil {
-		return nil, fmt.Errorf("create router: %w", err)
-	}
-
-	m.aclManager, err = newAclManager(workTable, wgIface, chainNameRoutingFw)
-	if err != nil {
-		return nil, fmt.Errorf("create acl manager: %w", err)
-	}
+	m.family4 = newFamily(workTable, wgIface, mtu)
 
 	if wgIface.Address().HasIPv6() {
-		if err := m.createIPv6Components(tableName, wgIface, mtu); err != nil {
-			return nil, fmt.Errorf("create IPv6 firewall: %w", err)
-		}
+		m.createIPv6Components(tableName, wgIface, mtu)
 	}
 
 	m.extMonitor = newExternalChainMonitor(m)
@@ -96,30 +82,19 @@ func Create(wgIface iFaceMapper, mtu uint16) (*Manager, error) {
 	return m, nil
 }
 
-func (m *Manager) createIPv6Components(tableName string, wgIface iFaceMapper, mtu uint16) error {
+func (m *Manager) createIPv6Components(tableName string, wgIface iFaceMapper, mtu uint16) {
 	workTable6 := &nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv6}
 
-	var err error
-	m.router6, err = newRouter(workTable6, wgIface, mtu)
-	if err != nil {
-		return fmt.Errorf("create v6 router: %w", err)
-	}
+	m.family6 = newFamily(workTable6, wgIface, mtu)
 
 	// Share the same IP forwarding state with the v4 router, since
 	// EnableIPForwarding controls both v4 and v6 sysctls.
-	m.router6.ipFwdState = m.router.ipFwdState
-
-	m.aclManager6, err = newAclManager(workTable6, wgIface, chainNameRoutingFw)
-	if err != nil {
-		return fmt.Errorf("create v6 acl manager: %w", err)
-	}
-
-	return nil
+	m.family6.ipFwdState = m.family4.ipFwdState
 }
 
 // hasIPv6 reports whether the manager has IPv6 components initialized.
 func (m *Manager) hasIPv6() bool {
-	return m.router6 != nil
+	return m.family6 != nil
 }
 
 func (m *Manager) initIPv6() error {
@@ -128,12 +103,8 @@ func (m *Manager) initIPv6() error {
 		return fmt.Errorf("create v6 work table: %w", err)
 	}
 
-	if err := m.router6.init(workTable6); err != nil {
-		return fmt.Errorf("v6 router init: %w", err)
-	}
-
-	if err := m.aclManager6.init(workTable6); err != nil {
-		return fmt.Errorf("v6 acl manager init: %w", err)
+	if err := m.family6.init(workTable6); err != nil {
+		return fmt.Errorf("v6 family init: %w", err)
 	}
 
 	return nil
@@ -156,19 +127,20 @@ func (m *Manager) Init(stateManager *statemanager.Manager) error {
 
 // reconcileExternalChains re-applies passthrough accept rules to external
 // filter chains for both IPv4 and IPv6 routers. Called by the monitor when
-// tables or chains appear (e.g. after firewalld reloads).
+// tables or chains appear (e.g. after firewalld reloads). Kernel routing opens
+// both INPUT and FORWARD.
 func (m *Manager) reconcileExternalChains() error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
 	var merr *multierror.Error
-	if m.router != nil {
-		if err := m.router.acceptExternalChainsRules(); err != nil {
+	if m.family4 != nil {
+		if err := m.family4.acceptExternalChainsRules(true); err != nil {
 			merr = multierror.Append(merr, fmt.Errorf("v4: %w", err))
 		}
 	}
 	if m.hasIPv6() {
-		if err := m.router6.acceptExternalChainsRules(); err != nil {
+		if err := m.family6.acceptExternalChainsRules(true); err != nil {
 			merr = multierror.Append(merr, fmt.Errorf("v6: %w", err))
 		}
 	}
@@ -187,12 +159,8 @@ func (m *Manager) initFirewall() (err error) {
 		}
 	}()
 
-	if err := m.router.init(workTable); err != nil {
-		return fmt.Errorf("router init: %w", err)
-	}
-
-	if err := m.aclManager.init(workTable); err != nil {
-		return fmt.Errorf("acl manager init: %w", err)
+	if err := m.family4.init(workTable); err != nil {
+		return fmt.Errorf("family init: %w", err)
 	}
 
 	if m.hasIPv6() {
@@ -220,7 +188,7 @@ func (m *Manager) persistState(stateManager *statemanager.Manager) {
 		InterfaceState: &InterfaceState{
 			NameStr:   m.wgIface.Name(),
 			WGAddress: m.wgIface.Address(),
-			MTU:       m.router.mtu,
+			MTU:       m.family4.mtu,
 		},
 	}); err != nil {
 		log.Errorf("failed to update state: %v", err)
@@ -235,12 +203,12 @@ func (m *Manager) persistState(stateManager *statemanager.Manager) {
 
 // rollbackInit performs best-effort cleanup of already-initialized state when Init fails partway through.
 func (m *Manager) rollbackInit() {
-	if err := m.router.Reset(); err != nil {
-		log.Warnf("rollback router: %v", err)
+	if err := m.family4.Reset(); err != nil {
+		log.Warnf("rollback family: %v", err)
 	}
 	if m.hasIPv6() {
-		if err := m.router6.Reset(); err != nil {
-			log.Warnf("rollback v6 router: %v", err)
+		if err := m.family6.Reset(); err != nil {
+			log.Warnf("rollback v6 family: %v", err)
 		}
 	}
 	if err := m.cleanupNetbirdTables(); err != nil {
@@ -251,118 +219,82 @@ func (m *Manager) rollbackInit() {
 	}
 }
 
-// AddPeerFiltering rule to the firewall
+// AddFilterRule installs a packet-filtering rule.
 //
-// If comment argument is empty firewall manager should set
-// rule ID as comment for the rule
-func (m *Manager) AddPeerFiltering(
-	id []byte,
-	ip net.IP,
-	proto firewall.Protocol,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	action firewall.Action,
-	ipsetName string,
-) ([]firewall.Rule, error) {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	if ip.To4() != nil {
-		return m.aclManager.AddPeerFiltering(id, ip, proto, sPort, dPort, action, ipsetName)
-	}
-
-	if !m.hasIPv6() {
-		return nil, fmt.Errorf("add peer filtering for %s: %w", ip, firewall.ErrIPv6NotInitialized)
-	}
-	return m.aclManager6.AddPeerFiltering(id, ip, proto, sPort, dPort, action, ipsetName)
-}
-
-func (m *Manager) AddRouteFiltering(
+// Destination semantics: zero Network → input chain (peer ACL);
+// set Network → forward chain (route ACL).
+//
+// Sources are a single address family; the rule is dispatched to the
+// matching per-family backend.
+func (m *Manager) AddFilterRule(
 	id []byte,
 	sources []netip.Prefix,
 	destination firewall.Network,
 	proto firewall.Protocol,
-	sPort, dPort *firewall.Port,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
 	action firewall.Action,
 ) (firewall.Rule, error) {
+	if len(sources) == 0 {
+		return nil, firewall.ErrNoSources
+	}
+
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if isIPv6RouteRule(sources, destination) {
+	fam := m.family4
+	if isIPv6Rule(sources, destination) {
 		if !m.hasIPv6() {
-			return nil, fmt.Errorf("add route filtering: %w", firewall.ErrIPv6NotInitialized)
+			return nil, fmt.Errorf("add filtering: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddRouteFiltering(id, sources, destination, proto, sPort, dPort, action)
+		fam = m.family6
 	}
-
-	return m.router.AddRouteFiltering(id, sources, destination, proto, sPort, dPort, action)
+	return fam.AddFilterRule(id, sources, destination, proto, sPort, dPort, action)
 }
 
-// DeletePeerRule from the firewall by rule definition
-func (m *Manager) DeletePeerRule(rule firewall.Rule) error {
+// DeleteFilterRule removes a filtering rule. The owning family is found
+// by id in the in-memory filter maps, which are the only tracking for
+// filter rules. family.DeleteFilterRule is idempotent when the id is
+// absent.
+func (m *Manager) DeleteFilterRule(rule firewall.Rule) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if m.hasIPv6() && isIPv6Rule(rule) {
-		return m.aclManager6.DeletePeerRule(rule)
-	}
-	return m.aclManager.DeletePeerRule(rule)
-}
-
-func isIPv6Rule(rule firewall.Rule) bool {
-	r, ok := rule.(*Rule)
-	return ok && r.nftRule != nil && r.nftRule.Table != nil && r.nftRule.Table.Family == nftables.TableFamilyIPv6
-}
-
-// isIPv6RouteRule determines whether a route rule belongs to the v6 table.
-// For static routes, the destination prefix determines the family. For dynamic
-// routes (DomainSet), the sources determine the family since management
-// duplicates dynamic rules per family.
-func isIPv6RouteRule(sources []netip.Prefix, destination firewall.Network) bool {
-	if destination.IsPrefix() {
-		return destination.Prefix.Addr().Is6()
-	}
-	return len(sources) > 0 && sources[0].Addr().Is6()
-}
-
-// DeleteRouteRule deletes a routing rule. Route rules live in exactly one
-// router; the cached maps are normally authoritative, so the kernel is only
-// consulted when neither map knows about the rule.
-func (m *Manager) DeleteRouteRule(rule firewall.Rule) error {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	id := rule.ID()
-	r, err := m.routerForRuleID(id, (*router).hasRule)
+	fam, err := m.familyForRuleID(rule.ID(), (*family).hasRule, false)
 	if err != nil {
 		return err
 	}
-	return r.DeleteRouteRule(rule)
+	return fam.DeleteFilterRule(rule)
 }
 
-// routerForRuleID picks the router holding the rule with the given id, using
-// the supplied lookup. If the cached maps disagree (or both miss), it refreshes
-// from the kernel once and re-checks before falling back to the v4 router.
-func (m *Manager) routerForRuleID(id string, has func(*router, string) bool) (*router, error) {
-	if has(m.router, id) {
-		return m.router, nil
-	}
-	if m.hasIPv6() && has(m.router6, id) {
-		return m.router6, nil
+// familyForRuleID picks the family holding the rule with the given id, using
+// the supplied lookup. With refresh set, a miss in both cached maps reloads
+// the NAT/DNAT rule maps from the kernel once and re-checks before falling
+// back to the v4 family. Filter rules are tracked only in memory and have no
+// kernel-backed reload, so their callers pass refresh as false.
+func (m *Manager) familyForRuleID(id firewall.RuleID, has func(*family, firewall.RuleID) bool, refresh bool) (*family, error) {
+	if has(m.family4, id) {
+		return m.family4, nil
 	}
 	if !m.hasIPv6() {
-		return m.router, nil
+		return m.family4, nil
 	}
-	if err := m.router.refreshRulesMap(); err != nil {
+	if has(m.family6, id) {
+		return m.family6, nil
+	}
+	if !refresh {
+		return m.family4, nil
+	}
+	if err := m.family4.refreshRulesMap(); err != nil {
 		return nil, fmt.Errorf("refresh v4 rules: %w", err)
 	}
-	if err := m.router6.refreshRulesMap(); err != nil {
+	if err := m.family6.refreshRulesMap(); err != nil {
 		return nil, fmt.Errorf("refresh v6 rules: %w", err)
 	}
-	if has(m.router6, id) && !has(m.router, id) {
-		return m.router6, nil
+	if has(m.family6, id) && !has(m.family4, id) {
+		return m.family6, nil
 	}
-	return m.router, nil
+	return m.family4, nil
 }
 
 func (m *Manager) IsServerRouteSupported() bool {
@@ -381,10 +313,10 @@ func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 		if !m.hasIPv6() {
 			return fmt.Errorf("add NAT rule: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddNatRule(pair)
+		return m.family6.AddNatRule(pair)
 	}
 
-	if err := m.router.AddNatRule(pair); err != nil {
+	if err := m.family4.AddNatRule(pair); err != nil {
 		return err
 	}
 
@@ -396,7 +328,7 @@ func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	// so the eventual cleanup still works.
 	if m.hasIPv6() && pair.Dynamic {
 		v6Pair := firewall.ToV6NatPair(pair)
-		if err := m.router6.AddNatRule(v6Pair); err != nil {
+		if err := m.family6.AddNatRule(v6Pair); err != nil {
 			return fmt.Errorf("add v6 NAT rule: %w", err)
 		}
 	}
@@ -412,18 +344,18 @@ func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 		if !m.hasIPv6() {
 			return nil
 		}
-		return m.router6.RemoveNatRule(pair)
+		return m.family6.RemoveNatRule(pair)
 	}
 
 	var merr *multierror.Error
 
-	if err := m.router.RemoveNatRule(pair); err != nil {
+	if err := m.family4.RemoveNatRule(pair); err != nil {
 		merr = multierror.Append(merr, fmt.Errorf("remove v4 NAT rule: %w", err))
 	}
 
 	if m.hasIPv6() && pair.Dynamic {
 		v6Pair := firewall.ToV6NatPair(pair)
-		if err := m.router6.RemoveNatRule(v6Pair); err != nil {
+		if err := m.family6.RemoveNatRule(v6Pair); err != nil {
 			merr = multierror.Append(merr, fmt.Errorf("remove v6 NAT rule: %w", err))
 		}
 	}
@@ -431,46 +363,13 @@ func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 	return nberrors.FormatErrorOrNil(merr)
 }
 
-// AllowNetbird allows netbird interface traffic.
-// This is called when USPFilter wraps the native firewall, adding blanket accept
-// rules so that packet filtering is handled in userspace instead of by netfilter.
-//
-// TODO: In USP mode this only adds ACCEPT to the netbird table's own chains,
-// which doesn't override DROP rules in external tables (e.g. firewalld).
-// Should add passthrough rules to external chains (like the native mode router's
-// addExternalChainsRules does) for both the netbird table family and inet tables.
-// The netbird table itself is fine (routing chains already exist there), but
-// non-netbird tables with INPUT/FORWARD hooks can still DROP our WG traffic.
-func (m *Manager) AllowNetbird() error {
-	m.mutex.Lock()
-	defer m.mutex.Unlock()
-
-	if err := m.aclManager.createDefaultAllowRules(); err != nil {
-		return fmt.Errorf("create default allow rules: %w", err)
-	}
-	if m.hasIPv6() {
-		if err := m.aclManager6.createDefaultAllowRules(); err != nil {
-			return fmt.Errorf("create v6 default allow rules: %w", err)
-		}
-	}
-	if err := m.rConn.Flush(); err != nil {
-		return fmt.Errorf("flush allow input netbird rules: %w", err)
-	}
-
-	if err := firewalld.TrustInterface(m.wgIface.Name()); err != nil {
-		log.Warnf("failed to trust interface in firewalld: %v", err)
-	}
-
-	return nil
-}
-
 // SetLegacyManagement sets the route manager to use legacy management
 func (m *Manager) SetLegacyManagement(isLegacy bool) error {
-	if err := firewall.SetLegacyManagement(m.router, isLegacy); err != nil {
+	if err := firewall.SetLegacyManagement(m.family4, isLegacy); err != nil {
 		return err
 	}
 	if m.hasIPv6() {
-		return firewall.SetLegacyManagement(m.router6, isLegacy)
+		return firewall.SetLegacyManagement(m.family6, isLegacy)
 	}
 	return nil
 }
@@ -484,13 +383,13 @@ func (m *Manager) Close(stateManager *statemanager.Manager) error {
 
 	var merr *multierror.Error
 
-	if err := m.router.Reset(); err != nil {
-		merr = multierror.Append(merr, fmt.Errorf("reset router: %v", err))
+	if err := m.family4.Reset(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("reset family: %w", err))
 	}
 
 	if m.hasIPv6() {
-		if err := m.router6.Reset(); err != nil {
-			merr = multierror.Append(merr, fmt.Errorf("reset v6 router: %v", err))
+		if err := m.family6.Reset(); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("reset v6 family: %w", err))
 		}
 	}
 
@@ -530,14 +429,14 @@ func (m *Manager) SetLogLevel(log.Level) {
 }
 
 func (m *Manager) EnableRouting() error {
-	if err := m.router.ipFwdState.RequestForwarding(); err != nil {
+	if err := m.family4.ipFwdState.RequestForwarding(); err != nil {
 		return fmt.Errorf("enable IP forwarding: %w", err)
 	}
 	return nil
 }
 
 func (m *Manager) DisableRouting() error {
-	if err := m.router.ipFwdState.ReleaseForwarding(); err != nil {
+	if err := m.family4.ipFwdState.ReleaseForwarding(); err != nil {
 		return fmt.Errorf("disable IP forwarding: %w", err)
 	}
 	return nil
@@ -551,13 +450,13 @@ func (m *Manager) Flush() error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	if err := m.aclManager.Flush(); err != nil {
+	if err := m.family4.Flush(); err != nil {
 		return err
 	}
 
 	if m.hasIPv6() {
-		if err := m.aclManager6.Flush(); err != nil {
-			return fmt.Errorf("flush v6 acl: %w", err)
+		if err := m.family6.Flush(); err != nil {
+			return fmt.Errorf("flush v6 family: %w", err)
 		}
 	}
 
@@ -577,9 +476,9 @@ func (m *Manager) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error)
 		if !m.hasIPv6() {
 			return nil, fmt.Errorf("add DNAT rule: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddDNATRule(rule)
+		return m.family6.AddDNATRule(rule)
 	}
-	return m.router.AddDNATRule(rule)
+	return m.family4.AddDNATRule(rule)
 }
 
 // DeleteDNATRule deletes a DNAT rule
@@ -587,7 +486,7 @@ func (m *Manager) DeleteDNATRule(rule firewall.Rule) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	r, err := m.routerForRuleID(rule.ID(), (*router).hasDNATRule)
+	r, err := m.familyForRuleID(rule.ID(), (*family).hasDNATRule, true)
 	if err != nil {
 		return err
 	}
@@ -608,12 +507,12 @@ func (m *Manager) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
 		}
 	}
 
-	if err := m.router.UpdateSet(set, v4Prefixes); err != nil {
+	if err := m.family4.UpdateSet(set, v4Prefixes); err != nil {
 		return err
 	}
 
 	if m.hasIPv6() && len(v6Prefixes) > 0 {
-		if err := m.router6.UpdateSet(set, v6Prefixes); err != nil {
+		if err := m.family6.UpdateSet(set, v6Prefixes); err != nil {
 			return fmt.Errorf("update v6 set: %w", err)
 		}
 	}
@@ -630,9 +529,9 @@ func (m *Manager) AddInboundDNAT(localAddr netip.Addr, protocol firewall.Protoco
 		if !m.hasIPv6() {
 			return fmt.Errorf("add inbound DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.AddInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // RemoveInboundDNAT removes an inbound DNAT rule.
@@ -644,9 +543,9 @@ func (m *Manager) RemoveInboundDNAT(localAddr netip.Addr, protocol firewall.Prot
 		if !m.hasIPv6() {
 			return fmt.Errorf("remove inbound DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.RemoveInboundDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // AddOutputDNAT adds an OUTPUT chain DNAT rule for locally-generated traffic.
@@ -658,9 +557,9 @@ func (m *Manager) AddOutputDNAT(localAddr netip.Addr, protocol firewall.Protocol
 		if !m.hasIPv6() {
 			return fmt.Errorf("add output DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.AddOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 // RemoveOutputDNAT removes an OUTPUT chain DNAT rule.
@@ -672,9 +571,9 @@ func (m *Manager) RemoveOutputDNAT(localAddr netip.Addr, protocol firewall.Proto
 		if !m.hasIPv6() {
 			return fmt.Errorf("remove output DNAT: %w", firewall.ErrIPv6NotInitialized)
 		}
-		return m.router6.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+		return m.family6.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 	}
-	return m.router.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
+	return m.family4.RemoveOutputDNAT(localAddr, protocol, originalPort, translatedPort)
 }
 
 const (
@@ -903,3 +802,14 @@ func getEstablishedExprs(register uint32) []expr.Any {
 		},
 	}
 }
+
+// isIPv6Rule reports whether the rule belongs to the v6 table. For a
+// prefix destination the destination family decides; otherwise the
+// (single-family) sources do, since management duplicates rules per
+// family.
+func isIPv6Rule(sources []netip.Prefix, destination firewall.Network) bool {
+	if destination.IsPrefix() {
+		return destination.Prefix.Addr().Is6()
+	}
+	return len(sources) > 0 && sources[0].Addr().Is6()
+}

client/firewall/nftables/manager_linux_test.go

@@ -1,3 +1,5 @@
+//go:build privileged
+
 package nftables
 
 import (
@@ -70,13 +72,13 @@ func TestNftablesManager(t *testing.T) {
 
 	testClient := &nftables.Conn{}
 
-	rule, err := manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{53}}, fw.ActionDrop, "")
+	rule, err := manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{53}}, fw.ActionDrop)
 	require.NoError(t, err, "failed to add rule")
 
 	err = manager.Flush()
 	require.NoError(t, err, "failed to flush")
 
-	rules, err := testClient.GetRules(manager.aclManager.workTable, manager.aclManager.chainInputRules)
+	rules, err := testClient.GetRules(manager.family4.workTable, manager.family4.chainInputRules)
 	require.NoError(t, err, "failed to get rules")
 
 	require.Len(t, rules, 2, "expected 2 rules")
@@ -147,15 +149,12 @@ func TestNftablesManager(t *testing.T) {
 	// Compare connection tracking rule at position 1 (pushed down by DROP rule insertion)
 	compareExprsIgnoringCounters(t, rules[1].Exprs, expectedExprs1)
 
-	for _, r := range rule {
-		err = manager.DeletePeerRule(r)
-		require.NoError(t, err, "failed to delete rule")
-	}
+	require.NoError(t, manager.DeleteFilterRule(rule), "failed to delete rule")
 
 	err = manager.Flush()
 	require.NoError(t, err, "failed to flush")
 
-	rules, err = testClient.GetRules(manager.aclManager.workTable, manager.aclManager.chainInputRules)
+	rules, err = testClient.GetRules(manager.family4.workTable, manager.family4.chainInputRules)
 	require.NoError(t, err, "failed to get rules")
 	// established rule remains
 	require.Len(t, rules, 1, "expected 1 rules after deletion")
@@ -180,47 +179,39 @@ func TestNftablesManagerRuleOrder(t *testing.T) {
 	testClient := &nftables.Conn{}
 
 	// Add accept rule first
-	_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "accept-http")
+	_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept)
 	require.NoError(t, err, "failed to add accept rule")
 
 	// Add deny rule second for the same traffic
-	_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionDrop, "deny-http")
+	_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionDrop)
 	require.NoError(t, err, "failed to add deny rule")
 
 	err = manager.Flush()
 	require.NoError(t, err, "failed to flush")
 
-	rules, err := testClient.GetRules(manager.aclManager.workTable, manager.aclManager.chainInputRules)
+	rules, err := testClient.GetRules(manager.family4.workTable, manager.family4.chainInputRules)
 	require.NoError(t, err, "failed to get rules")
 
 	t.Logf("Found %d rules in nftables chain", len(rules))
 
-	// Find the accept and deny rules and verify deny comes before accept
+	// Single-source rules emit a direct payload+cmp on the source IP
+	// (no set lookup). Match by source-IP + port + verdict instead of
+	// the legacy per-(action,port) set names ("deny-http"/"accept-http")
+	// that this test predates.
+	wantSrc := ip.AsSlice()
 	var acceptRuleIndex, denyRuleIndex = -1, -1
 	for i, rule := range rules {
-		hasAcceptHTTPSet := false
-		hasDenyHTTPSet := false
-		hasPort80 := false
+		var hasSrc, hasPort80 bool
 		var action string
-
 		for _, e := range rule.Exprs {
-			// Check for set lookup
-			if lookup, ok := e.(*expr.Lookup); ok {
-				switch lookup.SetName {
-				case "accept-http":
-					hasAcceptHTTPSet = true
-				case "deny-http":
-					hasDenyHTTPSet = true
+			if cmp, ok := e.(*expr.Cmp); ok && cmp.Op == expr.CmpOpEq {
+				if bytes.Equal(cmp.Data, wantSrc) {
+					hasSrc = true
 				}
-
-			}
-			// Check for port 80
-			if cmp, ok := e.(*expr.Cmp); ok {
-				if cmp.Op == expr.CmpOpEq && len(cmp.Data) == 2 && binary.BigEndian.Uint16(cmp.Data) == 80 {
+				if len(cmp.Data) == 2 && binary.BigEndian.Uint16(cmp.Data) == 80 {
 					hasPort80 = true
 				}
 			}
-			// Check for verdict
 			if verdict, ok := e.(*expr.Verdict); ok {
 				switch verdict.Kind {
 				case expr.VerdictAccept:
@@ -231,11 +222,15 @@ func TestNftablesManagerRuleOrder(t *testing.T) {
 			}
 		}
 
-		if hasAcceptHTTPSet && hasPort80 && action == "ACCEPT" {
-			t.Logf("Rule [%d]: accept-http set + Port 80 + ACCEPT", i)
+		if !hasSrc || !hasPort80 {
+			continue
+		}
+		switch action {
+		case "ACCEPT":
+			t.Logf("Rule [%d]: src=%s port=80 ACCEPT", i, ip)
 			acceptRuleIndex = i
-		} else if hasDenyHTTPSet && hasPort80 && action == "DROP" {
-			t.Logf("Rule [%d]: deny-http set + Port 80 + DROP", i)
+		case "DROP":
+			t.Logf("Rule [%d]: src=%s port=80 DROP", i, ip)
 			denyRuleIndex = i
 		}
 	}
@@ -279,7 +274,7 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
 				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
-				_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionAccept, "")
+				_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, "tcp", nil, port, fw.ActionAccept)
 				require.NoError(t, err, "failed to add rule")
 
 				if i%100 == 0 {
@@ -361,10 +356,10 @@ func TestNftablesManagerCompatibilityWithIptables(t *testing.T) {
 	})
 
 	ip := netip.MustParseAddr("100.96.0.1")
-	_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "")
+	_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept)
 	require.NoError(t, err, "failed to add peer filtering rule")
 
-	_, err = manager.AddRouteFiltering(
+	_, err = manager.AddFilterRule(
 		nil,
 		[]netip.Prefix{netip.MustParsePrefix("192.168.2.0/24")},
 		fw.Network{Prefix: netip.MustParsePrefix("10.1.0.0/24")},
@@ -437,10 +432,10 @@ func TestNftablesManagerIPv6CompatibilityWithIp6tables(t *testing.T) {
 	})
 
 	ip := netip.MustParseAddr("fd00::2")
-	_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "")
+	_, err = manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept)
 	require.NoError(t, err, "add v6 peer filtering rule")
 
-	_, err = manager.AddRouteFiltering(
+	_, err = manager.AddFilterRule(
 		nil,
 		[]netip.Prefix{netip.MustParsePrefix("fd00:1::/64")},
 		fw.Network{Prefix: netip.MustParsePrefix("2001:db8::/48")},
@@ -550,7 +545,7 @@ func TestNftablesManagerCompatibilityWithIptablesFor6kPrefixes(t *testing.T) {
 			prefixes = append(prefixes, netip.PrefixFrom(addr, 24))
 		}
 	}
-	_, err = manager.AddRouteFiltering(
+	_, err = manager.AddFilterRule(
 		nil,
 		prefixes,
 		fw.Network{Prefix: netip.MustParsePrefix("10.2.0.0/24")},
@@ -565,7 +560,7 @@ func TestNftablesManagerCompatibilityWithIptablesFor6kPrefixes(t *testing.T) {
 	verifyIptablesOutput(t, stdout, stderr)
 }
 
-func TestNftablesManagerCompatibilityWithIptablesForEmptyPrefixes(t *testing.T) {
+func TestNftablesManagerCompatibilityWithIptablesForWildcardSource(t *testing.T) {
 	if check() != NFTABLES {
 		t.Skip("nftables not supported on this system")
 	}
@@ -591,9 +586,9 @@ func TestNftablesManagerCompatibilityWithIptablesForEmptyPrefixes(t *testing.T)
 		verifyIptablesOutput(t, stdout, stderr)
 	})
 
-	_, err = manager.AddRouteFiltering(
+	_, err = manager.AddFilterRule(
 		nil,
-		[]netip.Prefix{},
+		[]netip.Prefix{netip.MustParsePrefix("0.0.0.0/0")},
 		fw.Network{Prefix: netip.MustParsePrefix("10.2.0.0/24")},
 		fw.ProtocolTCP,
 		nil,
@@ -606,6 +601,73 @@ func TestNftablesManagerCompatibilityWithIptablesForEmptyPrefixes(t *testing.T)
 	verifyIptablesOutput(t, stdout, stderr)
 }
 
+func TestNftablesManagerMultiPortFilter(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	manager, err := Create(ifaceMock, iface.DefaultMTU)
+	require.NoError(t, err)
+	require.NoError(t, manager.Init(nil))
+
+	t.Cleanup(func() {
+		require.NoError(t, manager.Close(nil), "failed to reset manager state")
+	})
+
+	ip := netip.MustParseAddr("100.96.0.1")
+
+	rule, err := manager.AddFilterRule(nil, pfx(ip.AsSlice()), fw.Network{}, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80, 443}}, fw.ActionAccept)
+	require.NoError(t, err, "failed to add multi-port rule")
+
+	testClient := &nftables.Conn{}
+	rules, err := testClient.GetRules(manager.family4.workTable, manager.family4.chainInputRules)
+	require.NoError(t, err, "failed to get rules")
+
+	var lookup *expr.Lookup
+	for _, kernelRule := range rules {
+		if string(kernelRule.UserData) != string(rule.ID()) {
+			continue
+		}
+		for _, e := range kernelRule.Exprs {
+			if l, ok := e.(*expr.Lookup); ok {
+				lookup = l
+			}
+		}
+	}
+	require.NotNil(t, lookup, "multi-port rule must match ports via a set lookup")
+
+	sets, err := testClient.GetSets(manager.family4.workTable)
+	require.NoError(t, err, "failed to get sets")
+
+	var portSet *nftables.Set
+	for _, s := range sets {
+		if s.Name == lookup.SetName {
+			portSet = s
+		}
+	}
+	require.NotNil(t, portSet, "anonymous port set not found in kernel")
+
+	portSet.Table = manager.family4.workTable
+	elements, err := testClient.GetSetElements(portSet)
+	require.NoError(t, err, "failed to get set elements")
+
+	ports := make(map[uint16]bool)
+	for _, e := range elements {
+		require.Len(t, e.Key, 2, "port set element key should be 2 bytes")
+		ports[binary.BigEndian.Uint16(e.Key)] = true
+	}
+	require.True(t, ports[80], "port set should contain port 80")
+	require.True(t, ports[443], "port set should contain port 443")
+
+	require.NoError(t, manager.DeleteFilterRule(rule), "failed to delete rule")
+
+	rules, err = testClient.GetRules(manager.family4.workTable, manager.family4.chainInputRules)
+	require.NoError(t, err, "failed to get rules after delete")
+	for _, kernelRule := range rules {
+		require.NotEqual(t, string(rule.ID()), string(kernelRule.UserData), "rule should be removed from kernel")
+	}
+}
+
 func compareExprsIgnoringCounters(t *testing.T, got, want []expr.Any) {
 	t.Helper()
 	require.Equal(t, len(got), len(want), "expression count mismatch")

client/firewall/nftables/router_linux_test.go

@@ -1,4 +1,4 @@
-//go:build !android
+//go:build !android && privileged
 
 package nftables
 
@@ -37,7 +37,7 @@ func TestNftablesManager_AddNatRule(t *testing.T) {
 
 	for _, testCase := range test.InsertRuleTestCases {
 		t.Run(testCase.Name, func(t *testing.T) {
-			// need fw manager to init both acl mgr and router for all chains to be present
+			// need fw manager to init both acl mgr and family for all chains to be present
 			manager, err := Create(ifaceMock, iface.DefaultMTU)
 			t.Cleanup(func() {
 				require.NoError(t, manager.Close(nil))
@@ -47,7 +47,7 @@ func TestNftablesManager_AddNatRule(t *testing.T) {
 
 			nftablesTestingClient := &nftables.Conn{}
 
-			rtr := manager.router
+			rtr := manager.family4
 			err = rtr.AddNatRule(testCase.InputPair)
 			require.NoError(t, err, "pair should be inserted")
 
@@ -90,9 +90,9 @@ func TestNftablesManager_AddNatRule(t *testing.T) {
 				}
 
 				// Build CIDR matching expressions
-				testRouter := &router{af: afIPv4}
-				sourceExp := testRouter.applyPrefix(testCase.InputPair.Source.Prefix, true)
-				destExp := testRouter.applyPrefix(testCase.InputPair.Destination.Prefix, false)
+				testRouter := &family{af: afIPv4}
+				sourceExp := prefixMatchExprs(testRouter.af, testCase.InputPair.Source.Prefix, true)
+				destExp := prefixMatchExprs(testRouter.af, testCase.InputPair.Destination.Prefix, false)
 
 				// Combine all expressions in the correct order
 				// nolint:gocritic
@@ -100,14 +100,14 @@ func TestNftablesManager_AddNatRule(t *testing.T) {
 				testingExpression = append(testingExpression, sourceExp...)
 				testingExpression = append(testingExpression, destExp...)
 
-				natRuleKey := firewall.GenKey(firewall.PreroutingFormat, testCase.InputPair)
+				natRuleKey := testCase.InputPair.GenKey(firewall.PreroutingFormat)
 				found := 0
 				for _, chain := range rtr.chains {
 					if chain.Name == chainNameManglePrerouting {
 						rules, err := nftablesTestingClient.GetRules(chain.Table, chain)
 						require.NoError(t, err, "should list rules for %s table and %s chain", chain.Table.Name, chain.Name)
 						for _, rule := range rules {
-							if len(rule.UserData) > 0 && string(rule.UserData) == natRuleKey {
+							if len(rule.UserData) > 0 && firewall.RuleID(rule.UserData) == natRuleKey {
 								// Compare expressions up to the mark setting expressions
 								require.ElementsMatchf(t, rule.Exprs[:len(testingExpression)], testingExpression, "prerouting nat rule elements should match")
 								found = 1
@@ -135,19 +135,19 @@ func TestNftablesManager_RemoveNatRule(t *testing.T) {
 			require.NoError(t, err)
 			require.NoError(t, manager.Init(nil))
 
-			rtr := manager.router
+			rtr := manager.family4
 
-			// First add the NAT rule using the router's method
+			// First add the NAT rule using the family's method
 			err = rtr.AddNatRule(testCase.InputPair)
 			require.NoError(t, err, "should add NAT rule")
 
 			// Verify the rule was added
-			natRuleKey := firewall.GenKey(firewall.PreroutingFormat, testCase.InputPair)
+			natRuleKey := testCase.InputPair.GenKey(firewall.PreroutingFormat)
 			found := false
 			rules, err := rtr.conn.GetRules(rtr.workTable, rtr.chains[chainNameManglePrerouting])
 			require.NoError(t, err, "should list rules")
 			for _, rule := range rules {
-				if len(rule.UserData) > 0 && string(rule.UserData) == natRuleKey {
+				if len(rule.UserData) > 0 && firewall.RuleID(rule.UserData) == natRuleKey {
 					found = true
 					break
 				}
@@ -163,7 +163,7 @@ func TestNftablesManager_RemoveNatRule(t *testing.T) {
 			rules, err = rtr.conn.GetRules(rtr.workTable, rtr.chains[chainNameManglePrerouting])
 			require.NoError(t, err, "should list rules after removal")
 			for _, rule := range rules {
-				if len(rule.UserData) > 0 && string(rule.UserData) == natRuleKey {
+				if len(rule.UserData) > 0 && firewall.RuleID(rule.UserData) == natRuleKey {
 					found = true
 					break
 				}
@@ -200,11 +200,10 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 
 	defer deleteWorkTable()
 
-	r, err := newRouter(workTable, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err, "Failed to create router")
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, r.init(workTable))
 
-	defer func(r *router) {
+	defer func(r *family) {
 		require.NoError(t, r.Reset(), "Failed to reset rules")
 	}(r)
 
@@ -314,16 +313,16 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			ruleKey, err := r.AddRouteFiltering(nil, tt.sources, firewall.Network{Prefix: tt.destination}, tt.proto, tt.sPort, tt.dPort, tt.action)
-			require.NoError(t, err, "AddRouteFiltering failed")
+			ruleKey, err := r.AddFilterRule(nil, tt.sources, firewall.Network{Prefix: tt.destination}, tt.proto, tt.sPort, tt.dPort, tt.action)
+			require.NoError(t, err, "AddFilterRule failed")
 
 			t.Cleanup(func() {
-				require.NoError(t, r.DeleteRouteRule(ruleKey), "Failed to delete rule")
+				require.NoError(t, r.DeleteFilterRule(ruleKey), "Failed to delete rule")
 			})
 
-			// Check if the rule is in the internal map
-			rule, ok := r.rules[ruleKey.ID()]
-			assert.True(t, ok, "Rule not found in internal map")
+			stored, ok := r.filters[id.RuleID(ruleKey.ID())]
+			require.True(t, ok, "Rule not found in filters map")
+			rule := stored.nftRule
 
 			t.Log("Internal rule expressions:")
 			for i, expr := range rule.Exprs {
@@ -339,7 +338,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 
 			var nftRule *nftables.Rule
 			for _, rule := range rules {
-				if string(rule.UserData) == ruleKey.ID() {
+				if firewall.RuleID(rule.UserData) == ruleKey.ID() {
 					nftRule = rule
 					break
 				}
@@ -367,12 +366,11 @@ func TestNftablesCreateIpSet(t *testing.T) {
 
 	defer deleteWorkTable()
 
-	r, err := newRouter(workTable, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err, "Failed to create router")
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, r.init(workTable))
 
 	defer func() {
-		require.NoError(t, r.Reset(), "Failed to reset router")
+		require.NoError(t, r.Reset(), "Failed to reset family")
 	}()
 
 	tests := []struct {
@@ -509,6 +507,41 @@ func TestNftablesCreateIpSet(t *testing.T) {
 	}
 }
 
+// TestNftablesUpdateSetMergesOverlapping verifies that UpdateSet merges
+// overlapping prefixes before adding them. An interval set rejects
+// overlapping elements, so without the merge a batch holding a /32 already
+// covered by a /24, or a duplicate address as DNS resolution can produce,
+// would fail.
+func TestNftablesUpdateSetMergesOverlapping(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	workTable, err := createWorkTable()
+	require.NoError(t, err, "create work table")
+	defer deleteWorkTable()
+
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
+	require.NoError(t, r.init(workTable))
+	defer func() {
+		require.NoError(t, r.Reset(), "reset family")
+	}()
+
+	initial := []netip.Prefix{netip.MustParsePrefix("10.0.0.0/24")}
+	set := firewall.NewPrefixSet(initial)
+
+	created, err := r.createIpSet(set.HashedName(), setInput{prefixes: initial})
+	require.NoError(t, err, "create ip set")
+	require.NotNil(t, created)
+
+	overlapping := []netip.Prefix{
+		netip.MustParsePrefix("192.168.1.0/24"),
+		netip.MustParsePrefix("192.168.1.1/32"),
+		netip.MustParsePrefix("192.168.1.1/32"),
+	}
+	require.NoError(t, r.UpdateSet(set, overlapping), "UpdateSet must merge overlapping prefixes")
+}
+
 func TestNftablesCreateIpSet_IPv6(t *testing.T) {
 	if check() != NFTABLES {
 		t.Skip("nftables not supported on this system")
@@ -518,11 +551,10 @@ func TestNftablesCreateIpSet_IPv6(t *testing.T) {
 	require.NoError(t, err, "Failed to create v6 work table")
 	defer deleteWorkTableIPv6()
 
-	r, err := newRouter(workTable, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err, "Failed to create router")
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, r.init(workTable))
 	defer func() {
-		require.NoError(t, r.Reset(), "Failed to reset router")
+		require.NoError(t, r.Reset(), "Failed to reset family")
 	}()
 
 	tests := []struct {
@@ -748,6 +780,14 @@ func containsPort(exprs []expr.Any, port *firewall.Port, isSource bool) bool {
 					}
 				}
 			}
+		case *expr.Lookup:
+			// Multiple discrete ports compile to an anonymous set lookup
+			// rather than a chain of comparisons. The set's id and name are
+			// assigned dynamically, so matching the lookup is enough here;
+			// the set elements are verified separately.
+			if !port.IsRange && len(port.Values) > 1 {
+				portMatchFound = true
+			}
 		}
 		if payloadFound && portMatchFound {
 			return true
@@ -861,13 +901,12 @@ func TestRouter_RefreshRulesMap_RemovesStaleEntries(t *testing.T) {
 	require.NoError(t, err)
 	defer deleteWorkTable()
 
-	r, err := newRouter(workTable, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err)
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, r.init(workTable))
 	defer func() { require.NoError(t, r.Reset()) }()
 
 	// Add a real rule to the kernel
-	ruleKey, err := r.AddRouteFiltering(
+	ruleKey, err := r.AddFilterRule(
 		nil,
 		[]netip.Prefix{netip.MustParsePrefix("192.168.1.0/24")},
 		firewall.Network{Prefix: netip.MustParsePrefix("10.0.0.0/24")},
@@ -878,11 +917,11 @@ func TestRouter_RefreshRulesMap_RemovesStaleEntries(t *testing.T) {
 	)
 	require.NoError(t, err)
 	t.Cleanup(func() {
-		require.NoError(t, r.DeleteRouteRule(ruleKey))
+		require.NoError(t, r.DeleteFilterRule(ruleKey))
 	})
 
 	// Inject a stale entry with Handle=0 (simulates store-before-flush failure)
-	staleKey := "stale-rule-that-does-not-exist"
+	staleKey := firewall.RuleID("stale-rule-that-does-not-exist")
 	r.rules[staleKey] = &nftables.Rule{
 		Table:    r.workTable,
 		Chain:    r.chains[chainNameRoutingFw],
@@ -902,6 +941,54 @@ func TestRouter_RefreshRulesMap_RemovesStaleEntries(t *testing.T) {
 	assert.NotZero(t, realRule.Handle, "real rule should have a valid handle")
 }
 
+// TestRouter_DeleteRouteRule_RemovesKernelRule verifies a route filter
+// rule is actually removed from the kernel on delete. The route chain is
+// not refreshed by Flush, so the stored rule carries a zero handle;
+// DeleteFilterRule must pull live handles itself before issuing the
+// delete or the kernel rule leaks. Regression test for that path.
+func TestRouter_DeleteRouteRule_RemovesKernelRule(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	workTable, err := createWorkTable()
+	require.NoError(t, err)
+	defer deleteWorkTable()
+
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
+	require.NoError(t, r.init(workTable))
+	defer func() { require.NoError(t, r.Reset()) }()
+
+	ruleKey, err := r.AddFilterRule(
+		nil,
+		[]netip.Prefix{netip.MustParsePrefix("192.168.1.0/24")},
+		firewall.Network{Prefix: netip.MustParsePrefix("10.0.0.0/24")},
+		firewall.ProtocolTCP,
+		nil,
+		&firewall.Port{Values: []uint16{80}},
+		firewall.ActionAccept,
+	)
+	require.NoError(t, err)
+
+	countKernelRules := func() int {
+		list, err := r.conn.GetRules(r.workTable, r.chains[chainNameRoutingFw])
+		require.NoError(t, err)
+		n := 0
+		for _, rule := range list {
+			if string(rule.UserData) == string(ruleKey.ID()) {
+				n++
+			}
+		}
+		return n
+	}
+
+	require.Equal(t, 1, countKernelRules(), "rule should be present in the kernel after add")
+
+	require.NoError(t, r.DeleteFilterRule(ruleKey))
+	assert.Equal(t, 0, countKernelRules(), "rule must be removed from the kernel after delete")
+	assert.NotContains(t, r.filters, ruleKey.ID(), "filters map entry should be cleared")
+}
+
 func TestRouter_DeleteRouteRule_StaleHandle(t *testing.T) {
 	if check() != NFTABLES {
 		t.Skip("nftables not supported on this system")
@@ -911,24 +998,27 @@ func TestRouter_DeleteRouteRule_StaleHandle(t *testing.T) {
 	require.NoError(t, err)
 	defer deleteWorkTable()
 
-	r, err := newRouter(workTable, ifaceMock, iface.DefaultMTU)
-	require.NoError(t, err)
+	r := newFamily(workTable, ifaceMock, iface.DefaultMTU)
 	require.NoError(t, r.init(workTable))
 	defer func() { require.NoError(t, r.Reset()) }()
 
 	// Inject a stale entry with Handle=0
-	staleKey := "stale-route-rule"
-	r.rules[staleKey] = &nftables.Rule{
-		Table:    r.workTable,
-		Chain:    r.chains[chainNameRoutingFw],
-		Handle:   0,
-		UserData: []byte(staleKey),
+	staleKey := id.RuleID("stale-route-rule")
+	staleRule := &Rule{
+		nftRule: &nftables.Rule{
+			Table:    r.workTable,
+			Chain:    r.chains[chainNameRoutingFw],
+			Handle:   0,
+			UserData: []byte(staleKey),
+		},
+		id: staleKey,
 	}
+	r.filters[staleKey] = staleRule
 
-	// DeleteRouteRule should not return an error for stale handles
-	err = r.DeleteRouteRule(id.RuleID(staleKey))
+	// DeleteFilterRule should not return an error for stale handles
+	err = r.DeleteFilterRule(staleRule)
 	assert.NoError(t, err, "deleting a stale rule should not error")
-	assert.NotContains(t, r.rules, staleKey, "stale entry should be cleaned up")
+	assert.NotContains(t, r.filters, staleKey, "stale entry should be cleaned up")
 }
 
 func TestRouter_AddNatRule_WithStaleEntry(t *testing.T) {
@@ -950,7 +1040,7 @@ func TestRouter_AddNatRule_WithStaleEntry(t *testing.T) {
 		Masquerade:  true,
 	}
 
-	rtr := manager.router
+	rtr := manager.family4
 
 	// First add succeeds
 	err = rtr.AddNatRule(pair)
@@ -960,11 +1050,11 @@ func TestRouter_AddNatRule_WithStaleEntry(t *testing.T) {
 	})
 
 	// Corrupt the handle to simulate stale state
-	natRuleKey := firewall.GenKey(firewall.PreroutingFormat, pair)
+	natRuleKey := pair.GenKey(firewall.PreroutingFormat)
 	if rule, exists := rtr.rules[natRuleKey]; exists {
 		rule.Handle = 0
 	}
-	inverseKey := firewall.GenKey(firewall.PreroutingFormat, firewall.GetInversePair(pair))
+	inverseKey := firewall.GetInversePair(pair).GenKey(firewall.PreroutingFormat)
 	if rule, exists := rtr.rules[inverseKey]; exists {
 		rule.Handle = 0
 	}
@@ -979,7 +1069,7 @@ func TestRouter_AddNatRule_WithStaleEntry(t *testing.T) {
 
 	found := 0
 	for _, rule := range rules {
-		if len(rule.UserData) > 0 && string(rule.UserData) == natRuleKey {
+		if len(rule.UserData) > 0 && firewall.RuleID(rule.UserData) == natRuleKey {
 			found++
 		}
 	}
@@ -1010,7 +1100,7 @@ func TestCalculateLastIP(t *testing.T) {
 }
 
 func TestConvertPrefixesToSet_IPv6(t *testing.T) {
-	r := &router{af: afIPv6}
+	r := &family{af: afIPv6}
 	prefixes := []netip.Prefix{
 		netip.MustParsePrefix("fd00::/64"),
 		netip.MustParsePrefix("2001:db8::1/128"),

client/firewall/nftables/routing_linux.go

@@ -0,0 +1,500 @@
+//go:build !android
+
+package nftables
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/expr"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	nbnet "github.com/netbirdio/netbird/client/net"
+)
+
+func (r *family) AddNatRule(pair firewall.RouterPair) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	if r.legacyManagement {
+		log.Warnf("This peer is connected to a NetBird Management service with an older version. Allowing all traffic for %s", pair.Destination)
+		if err := r.addLegacyRouteRule(pair); err != nil {
+			r.rollbackRules(pair)
+			return fmt.Errorf("add legacy routing rule: %w", err)
+		}
+	}
+
+	if pair.Masquerade {
+		if err := r.addNatRule(pair); err != nil {
+			r.rollbackRules(pair)
+			return fmt.Errorf("add nat rule: %w", err)
+		}
+
+		if err := r.addNatRule(firewall.GetInversePair(pair)); err != nil {
+			r.rollbackRules(pair)
+			return fmt.Errorf("add inverse nat rule: %w", err)
+		}
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		r.rollbackRules(pair)
+		return fmt.Errorf("insert rules for %s: %w", pair.Destination, err)
+	}
+
+	return nil
+}
+
+// rollbackRules cleans up unflushed rules and their set counters after a flush failure.
+func (r *family) rollbackRules(pair firewall.RouterPair) {
+	keys := []firewall.RuleID{
+		pair.GenKey(firewall.ForwardingFormat),
+		pair.GenKey(firewall.PreroutingFormat),
+		firewall.GetInversePair(pair).GenKey(firewall.PreroutingFormat),
+	}
+	for _, key := range keys {
+		rule, ok := r.rules[key]
+		if !ok {
+			continue
+		}
+		if err := r.decrementSetCounter(rule); err != nil {
+			log.Warnf("rollback set counter for %s: %v", key, err)
+		}
+		delete(r.rules, key)
+	}
+}
+
+// addNatRule inserts a nftables rule to the conn client flush queue
+func (r *family) addNatRule(pair firewall.RouterPair) error {
+	sourceExp, err := r.applyNetwork(pair.Source, nil, true)
+	if err != nil {
+		return fmt.Errorf("apply source: %w", err)
+	}
+
+	destExp, err := r.applyNetwork(pair.Destination, nil, false)
+	if err != nil {
+		r.dropNetworkMatch(sourceExp)
+		return fmt.Errorf("apply destination: %w", err)
+	}
+
+	op := expr.CmpOpEq
+	if pair.Inverse {
+		op = expr.CmpOpNeq
+	}
+
+	exprs := []expr.Any{
+		&expr.Meta{
+			Key:      expr.MetaKeyIIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       op,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+	}
+	// We only care about NEW connections to mark them and later identify them in the postrouting chain for masquerading.
+	// Masquerading will take care of the conntrack state, which means we won't need to mark established connections.
+	exprs = append(exprs, getCtNewExprs()...)
+
+	exprs = append(exprs, sourceExp...)
+	exprs = append(exprs, destExp...)
+
+	var markValue uint32 = nbnet.PreroutingFwmarkMasquerade
+	if pair.Inverse {
+		markValue = nbnet.PreroutingFwmarkMasqueradeReturn
+	}
+
+	exprs = append(exprs,
+		&expr.Immediate{
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(markValue),
+		},
+		&expr.Meta{
+			Key:            expr.MetaKeyMARK,
+			SourceRegister: true,
+			Register:       1,
+		},
+	)
+
+	ruleID := pair.GenKey(firewall.PreroutingFormat)
+
+	if _, exists := r.rules[ruleID]; exists {
+		if err := r.removeNatRule(pair); err != nil {
+			r.dropNetworkMatch(sourceExp)
+			r.dropNetworkMatch(destExp)
+			return fmt.Errorf("remove prerouting rule: %w", err)
+		}
+	}
+
+	// Ensure nat rules come first, so the mark can be overwritten.
+	// Currently overwritten by the dst-type LOCAL rules for redirected traffic.
+	r.rules[ruleID] = r.conn.InsertRule(&nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameManglePrerouting],
+		Exprs:    exprs,
+		UserData: []byte(ruleID),
+	})
+
+	return nil
+}
+
+func (r *family) addPostroutingRules() {
+	// First masquerade rule for traffic coming in from WireGuard interface
+	exprs := []expr.Any{
+		// Match on the first fwmark
+		&expr.Meta{
+			Key:      expr.MetaKeyMARK,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkMasquerade),
+		},
+
+		// We need to exclude the loopback interface as this changes the ebpf proxy port
+		&expr.Meta{
+			Key:      expr.MetaKeyOIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpNeq,
+			Register: 1,
+			Data:     ifname("lo"),
+		},
+		&expr.Counter{},
+		&expr.Masq{},
+	}
+
+	r.conn.AddRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: r.chains[chainNameRoutingNat],
+		Exprs: exprs,
+	})
+
+	// Second masquerade rule for traffic going out through WireGuard interface
+	exprs2 := []expr.Any{
+		// Match on the second fwmark
+		&expr.Meta{
+			Key:      expr.MetaKeyMARK,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkMasqueradeReturn),
+		},
+
+		// Match WireGuard interface
+		&expr.Meta{
+			Key:      expr.MetaKeyOIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Counter{},
+		&expr.Masq{},
+	}
+
+	r.conn.AddRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: r.chains[chainNameRoutingNat],
+		Exprs: exprs2,
+	})
+}
+
+// addMSSClampingRules adds MSS clamping rules to prevent fragmentation for forwarded traffic.
+func (r *family) addMSSClampingRules() error {
+	overhead := uint16(ipv4TCPHeaderSize)
+	if r.af.tableFamily == nftables.TableFamilyIPv6 {
+		overhead = ipv6TCPHeaderSize
+	}
+	if r.mtu <= overhead {
+		log.Debugf("MTU %d too small for MSS clamping (overhead %d), skipping", r.mtu, overhead)
+		return nil
+	}
+	mss := r.mtu - overhead
+
+	exprsOut := []expr.Any{
+		&expr.Meta{
+			Key:      expr.MetaKeyOIFNAME,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(r.wgIface.Name()),
+		},
+		&expr.Meta{
+			Key:      expr.MetaKeyL4PROTO,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{unix.IPPROTO_TCP},
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       13,
+			Len:          1,
+		},
+		&expr.Bitwise{
+			DestRegister:   1,
+			SourceRegister: 1,
+			Len:            1,
+			Mask:           []byte{0x02},
+			Xor:            []byte{0x00},
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpNeq,
+			Register: 1,
+			Data:     []byte{0x00},
+		},
+		&expr.Counter{},
+		&expr.Exthdr{
+			DestRegister: 1,
+			Type:         2,
+			Offset:       2,
+			Len:          2,
+			Op:           expr.ExthdrOpTcpopt,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpGt,
+			Register: 1,
+			Data:     binaryutil.BigEndian.PutUint16(uint16(mss)),
+		},
+		&expr.Immediate{
+			Register: 1,
+			Data:     binaryutil.BigEndian.PutUint16(uint16(mss)),
+		},
+		&expr.Exthdr{
+			SourceRegister: 1,
+			Type:           2,
+			Offset:         2,
+			Len:            2,
+			Op:             expr.ExthdrOpTcpopt,
+		},
+	}
+
+	r.conn.AddRule(&nftables.Rule{
+		Table: r.workTable,
+		Chain: r.chains[chainNameMangleForward],
+		Exprs: exprsOut,
+	})
+
+	return r.conn.Flush()
+}
+
+func (r *family) addLegacyRouteRule(pair firewall.RouterPair) error {
+	sourceExp, err := r.applyNetwork(pair.Source, nil, true)
+	if err != nil {
+		return fmt.Errorf("apply source: %w", err)
+	}
+
+	destExp, err := r.applyNetwork(pair.Destination, nil, false)
+	if err != nil {
+		r.dropNetworkMatch(sourceExp)
+		return fmt.Errorf("apply destination: %w", err)
+	}
+
+	var exprs []expr.Any
+	exprs = append(exprs, sourceExp...)
+	exprs = append(exprs, destExp...)
+	exprs = append(exprs,
+		&expr.Counter{},
+		&expr.Verdict{Kind: expr.VerdictAccept},
+	)
+
+	ruleID := pair.GenKey(firewall.ForwardingFormat)
+
+	if _, exists := r.rules[ruleID]; exists {
+		if err := r.removeLegacyRouteRule(pair); err != nil {
+			r.dropNetworkMatch(sourceExp)
+			r.dropNetworkMatch(destExp)
+			return fmt.Errorf("remove legacy routing rule: %w", err)
+		}
+	}
+
+	r.rules[ruleID] = r.conn.AddRule(&nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingFw],
+		Exprs:    exprs,
+		UserData: []byte(ruleID),
+	})
+	return nil
+}
+
+// removeLegacyRouteRule removes a legacy routing rule for mgmt servers pre route acls
+func (r *family) removeLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.ForwardingFormat)
+
+	rule, exists := r.rules[ruleID]
+	if !exists {
+		return nil
+	}
+
+	return r.deleteLegacyRuleEntry(ruleID, rule)
+}
+
+// deleteLegacyRuleEntry removes one legacy forwarding rule and drops its
+// ipset references. It also clears stale entries that never got a handle.
+func (r *family) deleteLegacyRuleEntry(ruleID firewall.RuleID, rule *nftables.Rule) error {
+	if rule.Handle == 0 {
+		log.Warnf("legacy forwarding rule %s has no handle, removing stale entry", ruleID)
+		if err := r.decrementSetCounter(rule); err != nil {
+			log.Warnf("decrement set counter for stale rule %s: %v", ruleID, err)
+		}
+		delete(r.rules, ruleID)
+		return nil
+	}
+
+	if err := r.conn.DelRule(rule); err != nil {
+		return fmt.Errorf("remove legacy forwarding rule %s: %w", ruleID, err)
+	}
+
+	delete(r.rules, ruleID)
+
+	if err := r.decrementSetCounter(rule); err != nil {
+		return fmt.Errorf("decrement set counter: %w", err)
+	}
+
+	return nil
+}
+
+// GetLegacyManagement returns the route manager's legacy management mode
+func (r *family) GetLegacyManagement() bool {
+	return r.legacyManagement
+}
+
+// SetLegacyManagement sets the route manager to use legacy management mode
+func (r *family) SetLegacyManagement(isLegacy bool) {
+	r.legacyManagement = isLegacy
+}
+
+// RemoveAllLegacyRouteRules removes all legacy routing rules for mgmt servers pre route acls
+func (r *family) RemoveAllLegacyRouteRules() error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	var merr *multierror.Error
+	for k, rule := range r.rules {
+		if !strings.HasPrefix(string(k), firewall.ForwardingFormatPrefix) {
+			continue
+		}
+		if err := r.deleteLegacyRuleEntry(k, rule); err != nil {
+			merr = multierror.Append(merr, err)
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) removeNatPreroutingRules() error {
+	table := &nftables.Table{
+		Name:   tableNat,
+		Family: r.af.tableFamily,
+	}
+	chain := &nftables.Chain{
+		Name:     chainNameNatPrerouting,
+		Table:    table,
+		Hooknum:  nftables.ChainHookPrerouting,
+		Priority: nftables.ChainPriorityNATDest,
+		Type:     nftables.ChainTypeNAT,
+	}
+	rules, err := r.conn.GetRules(table, chain)
+	if err != nil {
+		return fmt.Errorf("get rules from nat table: %w", err)
+	}
+
+	var merr *multierror.Error
+
+	// Delete rules that have our UserData suffix
+	for _, rule := range rules {
+		if len(rule.UserData) == 0 || !strings.HasSuffix(string(rule.UserData), string(dnatSuffix)) {
+			continue
+		}
+		if err := r.conn.DelRule(rule); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("delete rule %s: %w", rule.UserData, err))
+		}
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf(flushError, err))
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) RemoveNatRule(pair firewall.RouterPair) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	var merr *multierror.Error
+
+	if pair.Masquerade {
+		if err := r.removeNatRule(pair); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove prerouting rule: %w", err))
+		}
+
+		if err := r.removeNatRule(firewall.GetInversePair(pair)); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove inverse prerouting rule: %w", err))
+		}
+	}
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("remove legacy routing rule: %w", err))
+	}
+
+	// Set counters are decremented in the sub-methods above before flush. If flush fails,
+	// counters will be off until the next successful removal or refresh cycle.
+	if err := r.conn.Flush(); err != nil {
+		merr = multierror.Append(merr, fmt.Errorf("flush remove nat rules %s: %w", pair.Destination, err))
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+func (r *family) removeNatRule(pair firewall.RouterPair) error {
+	ruleID := pair.GenKey(firewall.PreroutingFormat)
+
+	rule, exists := r.rules[ruleID]
+	if !exists {
+		log.Debugf("prerouting rule %s not found", ruleID)
+		return nil
+	}
+
+	if rule.Handle == 0 {
+		log.Warnf("prerouting rule %s has no handle, removing stale entry", ruleID)
+		if err := r.decrementSetCounter(rule); err != nil {
+			log.Warnf("decrement set counter for stale rule %s: %v", ruleID, err)
+		}
+		delete(r.rules, ruleID)
+		return nil
+	}
+
+	if err := r.conn.DelRule(rule); err != nil {
+		return fmt.Errorf("remove prerouting rule %s -> %s: %w", pair.Source, pair.Destination, err)
+	}
+
+	log.Debugf("removed prerouting rule %s -> %s", pair.Source, pair.Destination)
+
+	delete(r.rules, ruleID)
+
+	if err := r.decrementSetCounter(rule); err != nil {
+		return fmt.Errorf("decrement set counter: %w", err)
+	}
+
+	return nil
+}

client/firewall/nftables/rule_linux.go

@@ -1,21 +1,26 @@
 package nftables
 
 import (
-	"net"
+	"net/netip"
 
 	"github.com/google/nftables"
+
+	"github.com/netbirdio/netbird/client/firewall/manager"
 )
 
-// Rule to handle management of rules
+// Rule wraps an installed filter rule (peer or route). Source set
+// membership is encoded in the rule's expressions; DeleteFilterRule
+// recovers the set name via findSets so the refcounter can drop the
+// right reference. mangleRule is set only for peer rules.
 type Rule struct {
 	nftRule    *nftables.Rule
 	mangleRule *nftables.Rule
-	nftSet     *nftables.Set
-	ruleID     string
-	ip         net.IP
+	// sources is the canonical source list this rule was created for.
+	sources []netip.Prefix
+	id      manager.RuleID
 }
 
-// GetRuleID returns the rule id
-func (r *Rule) ID() string {
-	return r.ruleID
+// ID returns the rule id
+func (r *Rule) ID() manager.RuleID {
+	return r.id
 }