Merge branch 'main' into userspace-router

The nhooyr.io/websocket package was renamed to github.com/coder/websocket when
the project was transferred to "coder" as the new maintainer.

Use the new import path and update go.mod and go.sum accordingly.

Signed-off-by: Christian Stewart <christian@aperture.us>

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21-bullseye
+FROM golang:1.23-bullseye
 
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
     && apt-get -y install --no-install-recommends\

.devcontainer/devcontainer.json

@@ -7,7 +7,7 @@
 	"features": {
 		"ghcr.io/devcontainers/features/docker-in-docker:2": {},
 		"ghcr.io/devcontainers/features/go:1": {
-			"version": "1.21"
+			"version": "1.23"
 		}
 	},
 	"workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",

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

@@ -21,6 +21,7 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: "1.23.x"
+          cache: false
       - name: Checkout code
         uses: actions/checkout@v4
 
@@ -28,8 +29,9 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
-          key: macos-go-${{ hashFiles('**/go.sum') }}
+          key: macos-gotest-${{ hashFiles('**/go.sum') }}
           restore-keys: |
+            macos-gotest-
             macos-go-
 
       - name: Install libpcap
@@ -42,4 +44,5 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Test
-        run: NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 5m -p 1 ./...
+        run: NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -tags=devcert -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 5m -p 1 $(go list ./... | grep -v /management)
+

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

@@ -24,7 +24,7 @@ jobs:
           copyback: false
           release: "14.1"
           prepare: |
-            pkg install -y go
+            pkg install -y go pkgconf xorg
 
           # -x - to print all executed commands
           # -e - to faile on first error
@@ -33,7 +33,7 @@ jobs:
             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/...
-            # NOTE: without -p1 `client/internal/dns` will fail becasue of `listen udp4 :33100: bind: address already in use`
+            # NOTE: without -p1 `client/internal/dns` will fail because of `listen udp4 :33100: bind: address already in use`
             time go test -timeout 8m -failfast -p 1 ./client/...
             time go test -timeout 1m -failfast ./dns/...
             time go test -timeout 1m -failfast ./encryption/...

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

@@ -11,31 +11,115 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  build-cache:
+    runs-on: ubuntu-22.04
+    steps:        
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.23.x"
+          cache: false
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        id: cache
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+            
+
+      - 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
+
+      - name: Install 32-bit libpcap
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: sudo dpkg --add-architecture i386 && sudo apt update && sudo apt-get install -y libpcap0.8-dev:i386
+
+      - name: Build client
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: client
+        run: CGO_ENABLED=1 go build .
+
+      - name: Build client 386
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: client
+        run: CGO_ENABLED=1 GOARCH=386 go build -o client-386 .
+
+      - name: Build management
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: management
+        run: CGO_ENABLED=1 go build .
+
+      - name: Build management 386
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: management
+        run: CGO_ENABLED=1 GOARCH=386 go build -o management-386 .
+
+      - name: Build signal
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: signal
+        run: CGO_ENABLED=1 go build .
+
+      - name: Build signal 386
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: signal
+        run: CGO_ENABLED=1 GOARCH=386 go build -o signal-386 .
+
+      - name: Build relay
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: relay
+        run: CGO_ENABLED=1 go build .
+
+      - name: Build relay 386
+        if: steps.cache.outputs.cache-hit != 'true'
+        working-directory: relay
+        run: CGO_ENABLED=1 GOARCH=386 go build -o relay-386 .
+
   test:
+    needs: [build-cache]
     strategy:
       fail-fast: false
       matrix:
         arch: [ '386','amd64' ]
-        store: [ 'sqlite', 'postgres']
     runs-on: ubuntu-22.04
     steps:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
           go-version: "1.23.x"
-
-
-      - name: Cache Go modules
-        uses: actions/cache@v4
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
+          cache: false
 
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ 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
 
@@ -50,27 +134,265 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Test
-        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 10m -p 1 ./...
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} CI=true go test -tags devcert -exec 'sudo' -timeout 10m -p 1 $(go list ./... | grep -v /management)
+
+  test_management:
+    needs: [ build-cache ]
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ '386','amd64' ]
+        store: [ 'sqlite', 'postgres', 'mysql' ]
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.23.x"
+          cache: false
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ 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
+
+      - name: Install 32-bit libpcap
+        if: matrix.arch == '386'
+        run: sudo dpkg --add-architecture i386 && sudo apt update && sudo apt-get install -y libpcap0.8-dev:i386
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: check git status
+        run: git --no-pager diff --exit-code
+
+      - name: Login to Docker hub
+        if: matrix.store == 'mysql' && (github.repository == github.head.repo.full_name || !github.head_ref)
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: download mysql image
+        if: matrix.store == 'mysql'
+        run: docker pull mlsmaycon/warmed-mysql:8
+
+      - name: Test
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -tags=devcert -p 1 -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 10m $(go list ./... | grep /management)
+
+  benchmark:
+    needs: [ build-cache ]
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ '386','amd64' ]
+        store: [ 'sqlite', 'postgres', 'mysql' ]
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.23.x"
+          cache: false
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ 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
+
+      - name: Install 32-bit libpcap
+        if: matrix.arch == '386'
+        run: sudo dpkg --add-architecture i386 && sudo apt update && sudo apt-get install -y libpcap0.8-dev:i386
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: check git status
+        run: git --no-pager diff --exit-code
+
+      - name: Login to Docker hub
+        if: matrix.store == 'mysql' && (github.repository == github.head.repo.full_name || !github.head_ref)
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: download mysql image
+        if: matrix.store == 'mysql'
+        run: docker pull mlsmaycon/warmed-mysql:8
+
+      - name: Test
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -tags devcert -run=^$ -bench=. -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 20m ./...
+
+  api_benchmark:
+    needs: [ build-cache ]
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ '386','amd64' ]
+        store: [ 'sqlite', 'postgres' ]
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.23.x"
+          cache: false
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ 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
+
+      - name: Install 32-bit libpcap
+        if: matrix.arch == '386'
+        run: sudo dpkg --add-architecture i386 && sudo apt update && sudo apt-get install -y libpcap0.8-dev:i386
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: check git status
+        run: git --no-pager diff --exit-code
+
+      - name: Login to Docker hub
+        if: matrix.store == 'mysql' && (github.repository == github.head.repo.full_name || !github.head_ref)
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: download mysql image
+        if: matrix.store == 'mysql'
+        run: docker pull mlsmaycon/warmed-mysql:8
+        
+      - name: Test
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -run=^$ -tags=benchmark -bench=. -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 30m $(go list -tags=benchmark ./... | grep /management)
+
+  api_integration_test:
+    needs: [ build-cache ]
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ '386','amd64' ]
+        store: [ 'sqlite', 'postgres']
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.23.x"
+          cache: false
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-gotest-cache-
+
+      - name: Install dependencies
+        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev gcc-multilib libpcap-dev
+
+      - name: Install 32-bit libpcap
+        if: matrix.arch == '386'
+        run: sudo dpkg --add-architecture i386 && sudo apt update && sudo apt-get install -y libpcap0.8-dev:i386
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: check git status
+        run: git --no-pager diff --exit-code
+
+      - name: Test
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} CI=true go test -tags=integration -p 1 -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 30m $(go list -tags=integration ./... | grep /management)
 
   test_client_on_docker:
+    needs: [ build-cache ]
     runs-on: ubuntu-20.04
     steps:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
           go-version: "1.23.x"
-
-      - name: Cache Go modules
-        uses: actions/cache@v4
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
+          cache: false
 
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV     
+
+      - name: Cache Go modules
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-cache-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ 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
 

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

@@ -24,6 +24,23 @@ jobs:
         id: go
         with:
           go-version: "1.23.x"
+          cache: false
+
+      - name: Get Go environment
+        run: |
+          echo "cache=$(go env GOCACHE)" >> $env:GITHUB_ENV
+          echo "modcache=$(go env GOMODCACHE)" >> $env:GITHUB_ENV
+
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ${{ env.cache }}
+            ${{ env.modcache }}
+          key: ${{ runner.os }}-gotest-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-gotest-
+            ${{ runner.os }}-go-
 
       - name: Download wintun
         uses: carlosperate/download-file-action@v2
@@ -42,11 +59,13 @@ jobs:
       - run: choco install -y sysinternals --ignore-checksums
       - run: choco install -y mingw
 
-      - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOMODCACHE=C:\Users\runneradmin\go\pkg\mod
-      - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOCACHE=C:\Users\runneradmin\AppData\Local\go-build
+      - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOMODCACHE=${{ env.cache }}
+      - 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 ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe mod tidy
+      - run: echo "files=$(go list ./... | ForEach-Object { $_ } | Where-Object { $_ -notmatch '/management' })" >> $env:GITHUB_ENV
 
       - name: test
-        run: PsExec64 -s -w ${{ github.workspace }} cmd.exe /c "C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe test -timeout 10m -p 1 ./... > test-out.txt 2>&1"
+        run: PsExec64 -s -w ${{ github.workspace }} cmd.exe /c "C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe test -tags=devcert -timeout 10m -p 1 ${{ env.files }} > test-out.txt 2>&1"
       - name: test output
         if: ${{ always() }}
         run: Get-Content test-out.txt

.github/workflows/golangci-lint.yml

@@ -19,7 +19,7 @@ jobs:
       - name: codespell
         uses: codespell-project/actions-codespell@v2
         with:
-          ignore_words_list: erro,clienta,hastable,iif,groupd
+          ignore_words_list: erro,clienta,hastable,iif,groupd,testin
           skip: go.mod,go.sum
           only_warn: 1
   golangci:
@@ -46,7 +46,7 @@ jobs:
         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
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
         with:
           version: latest
-          args: --timeout=12m
+          args: --timeout=12m --out-format colored-line-number

.github/workflows/release.yml

@@ -9,10 +9,10 @@ on:
   pull_request:
 
 env:
-  SIGN_PIPE_VER: "v0.0.17"
+  SIGN_PIPE_VER: "v0.0.18"
   GORELEASER_VER: "v2.3.2"
   PRODUCT_NAME: "NetBird"
-  COPYRIGHT: "Wiretrustee UG (haftungsbeschreankt)"
+  COPYRIGHT: "NetBird GmbH"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}

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

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        store: [ 'sqlite', 'postgres' ]
+        store: [ 'sqlite', 'postgres', 'mysql' ]
     services:
       postgres:
         image: ${{ (matrix.store == 'postgres') && 'postgres' || '' }}
@@ -34,6 +34,19 @@ jobs:
           --health-timeout 5s
         ports:
           - 5432:5432
+      mysql:
+        image: ${{ (matrix.store == 'mysql') && 'mysql' || '' }}
+        env:
+          MYSQL_USER: netbird
+          MYSQL_PASSWORD: mysql
+          MYSQL_ROOT_PASSWORD: mysqlroot
+          MYSQL_DATABASE: netbird
+        options: >-
+          --health-cmd "mysqladmin ping --silent"
+          --health-interval 10s
+          --health-timeout 5s
+        ports:
+          - 3306:3306
     steps:
       - name: Set Database Connection String
         run: |
@@ -42,6 +55,11 @@ jobs:
           else
             echo "NETBIRD_STORE_ENGINE_POSTGRES_DSN==" >> $GITHUB_ENV
           fi
+          if [ "${{ matrix.store }}" == "mysql" ]; then
+            echo "NETBIRD_STORE_ENGINE_MYSQL_DSN=netbird:mysql@tcp($(hostname -I | awk '{print $1}'):3306)/netbird" >> $GITHUB_ENV
+          else
+            echo "NETBIRD_STORE_ENGINE_MYSQL_DSN==" >> $GITHUB_ENV
+          fi
 
       - name: Install jq
         run: sudo apt-get install -y jq
@@ -84,6 +102,7 @@ jobs:
           CI_NETBIRD_AUTH_SUPPORTED_SCOPES: "openid profile email offline_access api email_verified"
           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 }}
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
 
       - name: check values
@@ -112,6 +131,7 @@ jobs:
           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 }}$'
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
           CI_NETBIRD_TURN_EXTERNAL_IP: "1.2.3.4"
 
@@ -149,6 +169,7 @@ jobs:
           grep -A 10 PKCEAuthorizationFlow management.json | grep -A 10 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_SUPPORTED_SCOPES"
           grep -A 10 PKCEAuthorizationFlow management.json | grep -A 10 ProviderConfig | grep -A 3 RedirectURLs | grep "http://localhost:53000"
           grep "external-ip" turnserver.conf | grep $CI_NETBIRD_TURN_EXTERNAL_IP
+          grep "NETBIRD_STORE_ENGINE_MYSQL_DSN=$NETBIRD_STORE_ENGINE_MYSQL_DSN" docker-compose.yml
           grep NETBIRD_STORE_ENGINE_POSTGRES_DSN docker-compose.yml | egrep "$NETBIRD_STORE_ENGINE_POSTGRES_DSN"
           # check relay values
           grep "NB_EXPOSED_ADDRESS=$CI_NETBIRD_DOMAIN:33445" docker-compose.yml

.goreleaser.yaml

@@ -179,6 +179,51 @@ dockers:
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=maintainer=dev@netbird.io"
+
+  - image_templates:
+      - netbirdio/netbird:{{ .Version }}-rootless-amd64
+    ids:
+      - netbird
+    goarch: amd64
+    use: buildx
+    dockerfile: client/Dockerfile-rootless
+    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=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/netbird:{{ .Version }}-rootless-arm64v8
+    ids:
+      - netbird
+    goarch: arm64
+    use: buildx
+    dockerfile: client/Dockerfile-rootless
+    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=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/netbird:{{ .Version }}-rootless-arm
+    ids:
+      - netbird
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: client/Dockerfile-rootless
+    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=maintainer=dev@netbird.io"
+
   - image_templates:
       - netbirdio/relay:{{ .Version }}-amd64
     ids:
@@ -377,6 +422,18 @@ docker_manifests:
       - 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

AUTHORS

@@ -1,3 +1,3 @@
 Mikhail Bragin (https://github.com/braginini)
 Maycon Santos (https://github.com/mlsmaycon)
-Wiretrustee UG (haftungsbeschränkt)
+NetBird GmbH

CONTRIBUTOR_LICENSE_AGREEMENT.md

@@ -3,10 +3,10 @@
 We are incredibly thankful for the contributions we receive from the community.
 We require our external contributors to sign a Contributor License Agreement ("CLA") in
 order to ensure that our projects remain licensed under Free and Open Source licenses such
-as BSD-3 while allowing Wiretrustee to build a sustainable business.
+as BSD-3 while allowing NetBird to build a sustainable business.
 
-Wiretrustee is committed to having a true Open Source Software ("OSS") license for
-our software. A CLA enables Wiretrustee to safely commercialize our products
+NetBird is committed to having a true Open Source Software ("OSS") license for
+our software. A CLA enables NetBird to safely commercialize our products
 while keeping a standard OSS license with all the rights that license grants to users: the
 ability to use the project in their own projects or businesses, to republish modified
 source, or to completely fork the project.
@@ -20,11 +20,11 @@ This is a human-readable summary of (and not a substitute for) the full agreemen
 This highlights only some of key terms of the CLA. It has no legal value and you should
 carefully review all the terms of the actual CLA before agreeing.
 
-<li>Grant of copyright license. You give Wiretrustee permission to use your copyrighted work
+<li>Grant of copyright license. You give NetBird permission to use your copyrighted work
 in commercial products.
 </li>
 
-<li>Grant of patent license. If your contributed work uses a patent, you give Wiretrustee a
+<li>Grant of patent license. If your contributed work uses a patent, you give NetBird a
 license to use that patent including within commercial products. You also agree that you
 have permission to grant this license.
 </li>
@@ -45,7 +45,7 @@ more.
 # Why require a CLA?
 
 Agreeing to a CLA explicitly states that you are entitled to provide a contribution, that you cannot withdraw permission
-to use your contribution at a later date, and that Wiretrustee has permission to use your contribution in our commercial
+to use your contribution at a later date, and that NetBird has permission to use your contribution in our commercial
 products.
 
 This removes any ambiguities or uncertainties caused by not having a CLA and allows users and customers to confidently
@@ -65,25 +65,25 @@ Follow the steps given by the bot to sign the CLA. This will require you to log
 information from your account) and to fill in a few additional details such as your name and email address. We will only
 use this information for CLA tracking; none of your submitted information will be used for marketing purposes.
 
-You only have to sign the CLA once. Once you've signed the CLA, future contributions to any Wiretrustee project will not
+You only have to sign the CLA once. Once you've signed the CLA, future contributions to any NetBird project will not
 require you to sign again.
 
 # Legal Terms and Agreement
 
-In order to clarify the intellectual property license granted with Contributions from any person or entity, Wiretrustee
-UG (haftungsbeschränkt) ("Wiretrustee") must have a Contributor License Agreement ("CLA") on file that has been signed
+In order to clarify the intellectual property license granted with Contributions from any person or entity, NetBird
+GmbH ("NetBird") must have a Contributor License Agreement ("CLA") on file that has been signed
 by each Contributor, indicating agreement to the license terms below. This license does not change your rights to use
 your own Contributions for any other purpose.
 
 You accept and agree to the following terms and conditions for Your present and future Contributions submitted to
-Wiretrustee. Except for the license granted herein to Wiretrustee and recipients of software distributed by Wiretrustee,
+NetBird. Except for the license granted herein to NetBird and recipients of software distributed by NetBird,
 You reserve all right, title, and interest in and to Your Contributions.
 
 1. Definitions.
 
     ```
    "You" (or "Your") shall mean the copyright owner or legal entity authorized by the copyright owner 
-   that is making this Agreement with Wiretrustee. For legal entities, the entity making a Contribution and all other 
+   that is making this Agreement with NetBird. For legal entities, the entity making a Contribution and all other 
    entities that control, are controlled by, or are under common control with that entity are considered 
    to be a single Contributor. For the purposes of this definition, "control" means (i) the power, direct or indirect,
     to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty 
@@ -91,23 +91,23 @@ You reserve all right, title, and interest in and to Your Contributions.
    ```
    ```
     "Contribution" shall mean any original work of authorship, including any modifications or additions to 
-   an existing work, that is or previously has been intentionally submitted by You to Wiretrustee for inclusion in, 
-   or documentation of, any of the products owned or managed by Wiretrustee (the "Work"). 
+   an existing work, that is or previously has been intentionally submitted by You to NetBird for inclusion in, 
+   or documentation of, any of the products owned or managed by NetBird (the "Work"). 
    For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication 
-   sent to Wiretrustee or its representatives, including but not limited to communication on electronic mailing lists, 
+   sent to NetBird or its representatives, including but not limited to communication on electronic mailing lists, 
    source code control systems, and issue tracking systems that are managed by, or on behalf of, 
-   Wiretrustee for the purpose of discussing and improving the Work, but excluding communication that is conspicuously 
+   NetBird for the purpose of discussing and improving the Work, but excluding communication that is conspicuously 
    marked or otherwise designated in writing by You as "Not a Contribution."
    ```
 
-2. Grant of Copyright License. Subject to the terms and conditions of this Agreement, You hereby grant to Wiretrustee
-   and to recipients of software distributed by Wiretrustee a perpetual, worldwide, non-exclusive, no-charge,
+2. Grant of Copyright License. Subject to the terms and conditions of this Agreement, You hereby grant to NetBird
+   and to recipients of software distributed by NetBird a perpetual, worldwide, non-exclusive, no-charge,
    royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly
    perform, sublicense, and distribute Your Contributions and such derivative works.
 
 
-3. Grant of Patent License. Subject to the terms and conditions of this Agreement, You hereby grant to Wiretrustee and
-   to recipients of software distributed by Wiretrustee a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
+3. Grant of Patent License. Subject to the terms and conditions of this Agreement, You hereby grant to NetBird and
+   to recipients of software distributed by NetBird a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
    irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import,
    and otherwise transfer the Work, where such license applies only to those patent claims licensable by You that are
    necessarily infringed by Your Contribution(s) alone or by combination of Your Contribution(s) with the Work to which
@@ -121,8 +121,8 @@ You reserve all right, title, and interest in and to Your Contributions.
    intellectual property that you create that includes your Contributions, you represent that you have received
    permission to make Contributions on behalf of that employer, that you will have received permission from your current
    and future employers for all future Contributions, that your applicable employer has waived such rights for all of
-   your current and future Contributions to Wiretrustee, or that your employer has executed a separate Corporate CLA
-   with Wiretrustee.
+   your current and future Contributions to NetBird, or that your employer has executed a separate Corporate CLA
+   with NetBird.
 
 
 5. You represent that each of Your Contributions is Your original creation (see section 7 for submissions on behalf of
@@ -138,11 +138,11 @@ You reserve all right, title, and interest in and to Your Contributions.
    MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
 
 
-7. Should You wish to submit work that is not Your original creation, You may submit it to Wiretrustee separately from
+7. Should You wish to submit work that is not Your original creation, You may submit it to NetBird separately from
    any Contribution, identifying the complete details of its source and of any license or other restriction (including,
    but not limited to, related patents, trademarks, and license agreements) of which you are personally aware, and
    conspicuously marking the work as "Submitted on behalf of a third-party: [named here]".
 
 
-8. You agree to notify Wiretrustee of any facts or circumstances of which you become aware that would make these
+8. You agree to notify NetBird of any facts or circumstances of which you become aware that would make these
    representations inaccurate in any respect.

LICENSE

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2022 Wiretrustee UG (haftungsbeschränkt) & AUTHORS
+Copyright (c) 2022 NetBird GmbH & AUTHORS
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 

README.md

@@ -1,10 +1,3 @@
-<p align="center">
- <strong>:hatching_chick: New Release! Device Posture Checks.</strong>
-  <a href="https://docs.netbird.io/how-to/manage-posture-checks">
-       Learn more
-     </a>   
-</p>
-<br/>
 <div align="center">
 <p align="center">
   <img width="234" src="docs/media/logo-full.png"/>
@@ -17,7 +10,7 @@
        <img src="https://img.shields.io/badge/license-BSD--3-blue" />
      </a> 
     <br>
-    <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2p5zwhm4g-8fHollzrQa5y4PZF5AEpvQ">
+    <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2utg2ncdz-W7LEB6toRBLE1Jca37dYpg">
         <img src="https://img.shields.io/badge/slack-@netbird-red.svg?logo=slack"/>
      </a>  
      <br>
@@ -34,7 +27,7 @@
   <br/>
   See <a href="https://netbird.io/docs/">Documentation</a>
   <br/>
-   Join our <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2p5zwhm4g-8fHollzrQa5y4PZF5AEpvQ">Slack channel</a>
+   Join our <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2utg2ncdz-W7LEB6toRBLE1Jca37dYpg">Slack channel</a>
   <br/>
  
 </strong>

client/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.20
+FROM alpine:3.21.0
 RUN apk add --no-cache ca-certificates iptables ip6tables
 ENV NB_FOREGROUND_MODE=true
 ENTRYPOINT [ "/usr/local/bin/netbird","up"]

client/Dockerfile-rootless

@@ -0,0 +1,17 @@
+FROM alpine:3.21.0
+
+COPY netbird /usr/local/bin/netbird
+
+RUN apk add --no-cache ca-certificates \
+    && adduser -D -h /var/lib/netbird netbird
+WORKDIR /var/lib/netbird
+USER netbird:netbird
+
+ENV NB_FOREGROUND_MODE=true
+ENV NB_USE_NETSTACK_MODE=true
+ENV NB_ENABLE_NETSTACK_LOCAL_FORWARDING=true
+ENV NB_CONFIG=config.json
+ENV NB_DAEMON_ADDR=unix://netbird.sock
+ENV NB_DISABLE_DNS=true
+
+ENTRYPOINT [ "/usr/local/bin/netbird", "up" ]

client/android/login.go

@@ -162,7 +162,7 @@ func (a *Auth) login(urlOpener URLOpener) error {
 
 	// check if we need to generate JWT token
 	err := a.withBackOff(a.ctx, func() (err error) {
-		needsLogin, err = internal.IsLoginRequired(a.ctx, a.config.PrivateKey, a.config.ManagementURL, a.config.SSHKey)
+		needsLogin, err = internal.IsLoginRequired(a.ctx, a.config)
 		return
 	})
 	if err != nil {

client/anonymize/anonymize.go

@@ -12,6 +12,8 @@ import (
 	"strings"
 )
 
+const anonTLD = ".domain"
+
 type Anonymizer struct {
 	ipAnonymizer     map[netip.Addr]netip.Addr
 	domainAnonymizer map[string]string
@@ -19,6 +21,8 @@ type Anonymizer struct {
 	currentAnonIPv6  netip.Addr
 	startAnonIPv4    netip.Addr
 	startAnonIPv6    netip.Addr
+
+	domainKeyRegex *regexp.Regexp
 }
 
 func DefaultAddresses() (netip.Addr, netip.Addr) {
@@ -34,6 +38,8 @@ func NewAnonymizer(startIPv4, startIPv6 netip.Addr) *Anonymizer {
 		currentAnonIPv6:  startIPv6,
 		startAnonIPv4:    startIPv4,
 		startAnonIPv6:    startIPv6,
+
+		domainKeyRegex: regexp.MustCompile(`\bdomain=([^\s,:"]+)`),
 	}
 }
 
@@ -83,29 +89,39 @@ func (a *Anonymizer) AnonymizeIPString(ip string) string {
 }
 
 func (a *Anonymizer) AnonymizeDomain(domain string) string {
-	if strings.HasSuffix(domain, "netbird.io") ||
-		strings.HasSuffix(domain, "netbird.selfhosted") ||
-		strings.HasSuffix(domain, "netbird.cloud") ||
-		strings.HasSuffix(domain, "netbird.stage") ||
-		strings.HasSuffix(domain, ".domain") {
+	baseDomain := domain
+	hasDot := strings.HasSuffix(domain, ".")
+	if hasDot {
+		baseDomain = domain[:len(domain)-1]
+	}
+
+	if strings.HasSuffix(baseDomain, "netbird.io") ||
+		strings.HasSuffix(baseDomain, "netbird.selfhosted") ||
+		strings.HasSuffix(baseDomain, "netbird.cloud") ||
+		strings.HasSuffix(baseDomain, "netbird.stage") ||
+		strings.HasSuffix(baseDomain, anonTLD) {
 		return domain
 	}
 
-	parts := strings.Split(domain, ".")
+	parts := strings.Split(baseDomain, ".")
 	if len(parts) < 2 {
 		return domain
 	}
 
-	baseDomain := parts[len(parts)-2] + "." + parts[len(parts)-1]
+	baseForLookup := parts[len(parts)-2] + "." + parts[len(parts)-1]
 
-	anonymized, ok := a.domainAnonymizer[baseDomain]
+	anonymized, ok := a.domainAnonymizer[baseForLookup]
 	if !ok {
-		anonymizedBase := "anon-" + generateRandomString(5) + ".domain"
-		a.domainAnonymizer[baseDomain] = anonymizedBase
+		anonymizedBase := "anon-" + generateRandomString(5) + anonTLD
+		a.domainAnonymizer[baseForLookup] = anonymizedBase
 		anonymized = anonymizedBase
 	}
 
-	return strings.Replace(domain, baseDomain, anonymized, 1)
+	result := strings.Replace(baseDomain, baseForLookup, anonymized, 1)
+	if hasDot {
+		result += "."
+	}
+	return result
 }
 
 func (a *Anonymizer) AnonymizeURI(uri string) string {
@@ -152,27 +168,22 @@ func (a *Anonymizer) AnonymizeString(str string) string {
 	return str
 }
 
-// AnonymizeSchemeURI finds and anonymizes URIs with stun, stuns, turn, and turns schemes.
+// AnonymizeSchemeURI finds and anonymizes URIs with ws, wss, rel, rels, stun, stuns, turn, and turns schemes.
 func (a *Anonymizer) AnonymizeSchemeURI(text string) string {
-	re := regexp.MustCompile(`(?i)\b(stuns?:|turns?:|https?://)\S+\b`)
+	re := regexp.MustCompile(`(?i)\b(wss?://|rels?://|stuns?:|turns?:|https?://)\S+\b`)
 
 	return re.ReplaceAllStringFunc(text, a.AnonymizeURI)
 }
 
-// AnonymizeDNSLogLine anonymizes domain names in DNS log entries by replacing them with a random string.
 func (a *Anonymizer) AnonymizeDNSLogLine(logEntry string) string {
-	domainPattern := `dns\.Question{Name:"([^"]+)",`
-	domainRegex := regexp.MustCompile(domainPattern)
-
-	return domainRegex.ReplaceAllStringFunc(logEntry, func(match string) string {
-		parts := strings.Split(match, `"`)
+	return a.domainKeyRegex.ReplaceAllStringFunc(logEntry, func(match string) string {
+		parts := strings.SplitN(match, "=", 2)
 		if len(parts) >= 2 {
 			domain := parts[1]
-			if strings.HasSuffix(domain, ".domain") {
+			if strings.HasSuffix(domain, anonTLD) {
 				return match
 			}
-			randomDomain := generateRandomString(10) + ".domain"
-			return strings.Replace(match, domain, randomDomain, 1)
+			return "domain=" + a.AnonymizeDomain(domain)
 		}
 		return match
 	})

client/anonymize/anonymize_test.go

@@ -46,11 +46,59 @@ func TestAnonymizeIP(t *testing.T) {
 
 func TestAnonymizeDNSLogLine(t *testing.T) {
 	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
-	testLog := `2024-04-23T20:01:11+02:00 TRAC client/internal/dns/local.go:25: received question: dns.Question{Name:"example.com", Qtype:0x1c, Qclass:0x1}`
+	tests := []struct {
+		name     string
+		input    string
+		original string
+		expect   string
+	}{
+		{
+			name:     "Basic domain with trailing content",
+			input:    "received DNS request for DNS forwarder: domain=example.com: something happened with code=123",
+			original: "example.com",
+			expect:   `received DNS request for DNS forwarder: domain=anon-[a-zA-Z0-9]+\.domain: something happened with code=123`,
+		},
+		{
+			name:     "Domain with trailing dot",
+			input:    "domain=example.com. processing request with status=pending",
+			original: "example.com",
+			expect:   `domain=anon-[a-zA-Z0-9]+\.domain\. processing request with status=pending`,
+		},
+		{
+			name:     "Multiple domains in log",
+			input:    "forward domain=first.com status=ok, redirect to domain=second.com port=443",
+			original: "first.com", // testing just one is sufficient as AnonymizeDomain is tested separately
+			expect:   `forward domain=anon-[a-zA-Z0-9]+\.domain status=ok, redirect to domain=anon-[a-zA-Z0-9]+\.domain port=443`,
+		},
+		{
+			name:     "Already anonymized domain",
+			input:    "got request domain=anon-xyz123.domain from=client1 to=server2",
+			original: "", // nothing should be anonymized
+			expect:   `got request domain=anon-xyz123\.domain from=client1 to=server2`,
+		},
+		{
+			name:     "Subdomain with trailing dot",
+			input:    "domain=sub.example.com. next_hop=10.0.0.1 proto=udp",
+			original: "example.com",
+			expect:   `domain=sub\.anon-[a-zA-Z0-9]+\.domain\. next_hop=10\.0\.0\.1 proto=udp`,
+		},
+		{
+			name:     "Handler chain pattern log",
+			input:    "pattern: domain=example.com. original: domain=*.example.com. wildcard=true priority=100",
+			original: "example.com",
+			expect:   `pattern: domain=anon-[a-zA-Z0-9]+\.domain\. original: domain=\*\.anon-[a-zA-Z0-9]+\.domain\. wildcard=true priority=100`,
+		},
+	}
 
-	result := anonymizer.AnonymizeDNSLogLine(testLog)
-	require.NotEqual(t, testLog, result)
-	assert.NotContains(t, result, "example.com")
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := anonymizer.AnonymizeDNSLogLine(tc.input)
+			if tc.original != "" {
+				assert.NotContains(t, result, tc.original)
+			}
+			assert.Regexp(t, tc.expect, result)
+		})
+	}
 }
 
 func TestAnonymizeDomain(t *testing.T) {
@@ -67,18 +115,36 @@ func TestAnonymizeDomain(t *testing.T) {
 			`^anon-[a-zA-Z0-9]+\.domain$`,
 			true,
 		},
+		{
+			"Domain with Trailing Dot",
+			"example.com.",
+			`^anon-[a-zA-Z0-9]+\.domain.$`,
+			true,
+		},
 		{
 			"Subdomain",
 			"sub.example.com",
 			`^sub\.anon-[a-zA-Z0-9]+\.domain$`,
 			true,
 		},
+		{
+			"Subdomain with Trailing Dot",
+			"sub.example.com.",
+			`^sub\.anon-[a-zA-Z0-9]+\.domain.$`,
+			true,
+		},
 		{
 			"Protected Domain",
 			"netbird.io",
 			`^netbird\.io$`,
 			false,
 		},
+		{
+			"Protected Domain with Trailing Dot",
+			"netbird.io.",
+			`^netbird\.io.$`,
+			false,
+		},
 	}
 
 	for _, tc := range tests {
@@ -140,8 +206,16 @@ func TestAnonymizeSchemeURI(t *testing.T) {
 		expect string
 	}{
 		{"STUN URI in text", "Connection made via stun:example.com", `Connection made via stun:anon-[a-zA-Z0-9]+\.domain`},
+		{"STUNS URI in message", "Secure connection to stuns:example.com:443", `Secure connection to stuns:anon-[a-zA-Z0-9]+\.domain:443`},
 		{"TURN URI in log", "Failed attempt turn:some.example.com:3478?transport=tcp: retrying", `Failed attempt turn:some.anon-[a-zA-Z0-9]+\.domain:3478\?transport=tcp: retrying`},
+		{"TURNS URI in message", "Secure connection to turns:example.com:5349", `Secure connection to turns:anon-[a-zA-Z0-9]+\.domain:5349`},
+		{"HTTP URI in text", "Visit http://example.com for more", `Visit http://anon-[a-zA-Z0-9]+\.domain for more`},
+		{"HTTPS URI in CAPS", "Visit HTTPS://example.com for more", `Visit https://anon-[a-zA-Z0-9]+\.domain for more`},
 		{"HTTPS URI in message", "Visit https://example.com for more", `Visit https://anon-[a-zA-Z0-9]+\.domain for more`},
+		{"WS URI in log", "Connection established to ws://example.com:8080", `Connection established to ws://anon-[a-zA-Z0-9]+\.domain:8080`},
+		{"WSS URI in message", "Secure connection to wss://example.com", `Secure connection to wss://anon-[a-zA-Z0-9]+\.domain`},
+		{"Rel URI in text", "Relaying to rel://example.com", `Relaying to rel://anon-[a-zA-Z0-9]+\.domain`},
+		{"Rels URI in message", "Relaying to rels://example.com", `Relaying to rels://anon-[a-zA-Z0-9]+\.domain`},
 	}
 
 	for _, tc := range tests {

client/cmd/debug.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"context"
 	"fmt"
+	"strings"
 	"time"
 
 	log "github.com/sirupsen/logrus"
@@ -61,6 +62,15 @@ var forCmd = &cobra.Command{
 	RunE:    runForDuration,
 }
 
+var persistenceCmd = &cobra.Command{
+	Use:     "persistence [on|off]",
+	Short:   "Set network map memory persistence",
+	Long:    `Configure whether the latest network map should persist in memory. When enabled, the last known network map will be kept in memory.`,
+	Example: "  netbird debug persistence on",
+	Args:    cobra.ExactArgs(1),
+	RunE:    setNetworkMapPersistence,
+}
+
 func debugBundle(cmd *cobra.Command, _ []string) error {
 	conn, err := getClient(cmd)
 	if err != nil {
@@ -171,6 +181,13 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 
 	time.Sleep(1 * time.Second)
 
+	// Enable network map persistence before bringing the service up
+	if _, err := client.SetNetworkMapPersistence(cmd.Context(), &proto.SetNetworkMapPersistenceRequest{
+		Enabled: true,
+	}); err != nil {
+		return fmt.Errorf("failed to enable network map persistence: %v", status.Convert(err).Message())
+	}
+
 	if _, err := client.Up(cmd.Context(), &proto.UpRequest{}); err != nil {
 		return fmt.Errorf("failed to up: %v", status.Convert(err).Message())
 	}
@@ -200,6 +217,13 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to bundle debug: %v", status.Convert(err).Message())
 	}
 
+	// Disable network map persistence after creating the debug bundle
+	if _, err := client.SetNetworkMapPersistence(cmd.Context(), &proto.SetNetworkMapPersistenceRequest{
+		Enabled: false,
+	}); err != nil {
+		return fmt.Errorf("failed to disable network map persistence: %v", status.Convert(err).Message())
+	}
+
 	if stateWasDown {
 		if _, err := client.Down(cmd.Context(), &proto.DownRequest{}); err != nil {
 			return fmt.Errorf("failed to down: %v", status.Convert(err).Message())
@@ -219,6 +243,34 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
+func setNetworkMapPersistence(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf(errCloseConnection, err)
+		}
+	}()
+
+	persistence := strings.ToLower(args[0])
+	if persistence != "on" && persistence != "off" {
+		return fmt.Errorf("invalid persistence value: %s. Use 'on' or 'off'", args[0])
+	}
+
+	client := proto.NewDaemonServiceClient(conn)
+	_, err = client.SetNetworkMapPersistence(cmd.Context(), &proto.SetNetworkMapPersistenceRequest{
+		Enabled: persistence == "on",
+	})
+	if err != nil {
+		return fmt.Errorf("failed to set network map persistence: %v", status.Convert(err).Message())
+	}
+
+	cmd.Printf("Network map persistence set to: %s\n", persistence)
+	return nil
+}
+
 func getStatusOutput(cmd *cobra.Command) string {
 	var statusOutputString string
 	statusResp, err := getStatus(cmd.Context())

client/cmd/networks.go

@@ -0,0 +1,173 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var appendFlag bool
+
+var networksCMD = &cobra.Command{
+	Use:     "networks",
+	Aliases: []string{"routes"},
+	Short:   "Manage networks",
+	Long:    `Commands to list, select, or deselect networks. Replaces the "routes" command.`,
+}
+
+var routesListCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List networks",
+	Example: "  netbird networks list",
+	Long:    "List all available network routes.",
+	RunE:    networksList,
+}
+
+var routesSelectCmd = &cobra.Command{
+	Use:     "select network...|all",
+	Short:   "Select network",
+	Long:    "Select a list of networks by identifiers or 'all' to clear all selections and to accept all (including new) networks.\nDefault mode is replace, use -a to append to already selected networks.",
+	Example: "  netbird networks select all\n  netbird networks select route1 route2\n  netbird routes select -a route3",
+	Args:    cobra.MinimumNArgs(1),
+	RunE:    networksSelect,
+}
+
+var routesDeselectCmd = &cobra.Command{
+	Use:     "deselect network...|all",
+	Short:   "Deselect networks",
+	Long:    "Deselect previously selected networks by identifiers or 'all' to disable accepting any networks.",
+	Example: "  netbird networks deselect all\n  netbird networks deselect route1 route2",
+	Args:    cobra.MinimumNArgs(1),
+	RunE:    networksDeselect,
+}
+
+func init() {
+	routesSelectCmd.PersistentFlags().BoolVarP(&appendFlag, "append", "a", false, "Append to current network selection instead of replacing")
+}
+
+func networksList(cmd *cobra.Command, _ []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	resp, err := client.ListNetworks(cmd.Context(), &proto.ListNetworksRequest{})
+	if err != nil {
+		return fmt.Errorf("failed to list network: %v", status.Convert(err).Message())
+	}
+
+	if len(resp.Routes) == 0 {
+		cmd.Println("No networks available.")
+		return nil
+	}
+
+	printNetworks(cmd, resp)
+
+	return nil
+}
+
+func printNetworks(cmd *cobra.Command, resp *proto.ListNetworksResponse) {
+	cmd.Println("Available Networks:")
+	for _, route := range resp.Routes {
+		printNetwork(cmd, route)
+	}
+}
+
+func printNetwork(cmd *cobra.Command, route *proto.Network) {
+	selectedStatus := getSelectedStatus(route)
+	domains := route.GetDomains()
+
+	if len(domains) > 0 {
+		printDomainRoute(cmd, route, domains, selectedStatus)
+	} else {
+		printNetworkRoute(cmd, route, selectedStatus)
+	}
+}
+
+func getSelectedStatus(route *proto.Network) string {
+	if route.GetSelected() {
+		return "Selected"
+	}
+	return "Not Selected"
+}
+
+func printDomainRoute(cmd *cobra.Command, route *proto.Network, domains []string, selectedStatus string) {
+	cmd.Printf("\n  - ID: %s\n    Domains: %s\n    Status: %s\n", route.GetID(), strings.Join(domains, ", "), selectedStatus)
+	resolvedIPs := route.GetResolvedIPs()
+
+	if len(resolvedIPs) > 0 {
+		printResolvedIPs(cmd, domains, resolvedIPs)
+	} else {
+		cmd.Printf("    Resolved IPs: -\n")
+	}
+}
+
+func printNetworkRoute(cmd *cobra.Command, route *proto.Network, selectedStatus string) {
+	cmd.Printf("\n  - ID: %s\n    Network: %s\n    Status: %s\n", route.GetID(), route.GetRange(), selectedStatus)
+}
+
+func printResolvedIPs(cmd *cobra.Command, _ []string, resolvedIPs map[string]*proto.IPList) {
+	cmd.Printf("    Resolved IPs:\n")
+	for resolvedDomain, ipList := range resolvedIPs {
+		cmd.Printf("      [%s]: %s\n", resolvedDomain, strings.Join(ipList.GetIps(), ", "))
+	}
+}
+
+func networksSelect(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	req := &proto.SelectNetworksRequest{
+		NetworkIDs: args,
+	}
+
+	if len(args) == 1 && args[0] == "all" {
+		req.All = true
+	} else if appendFlag {
+		req.Append = true
+	}
+
+	if _, err := client.SelectNetworks(cmd.Context(), req); err != nil {
+		return fmt.Errorf("failed to select networks: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println("Networks selected successfully.")
+
+	return nil
+}
+
+func networksDeselect(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	req := &proto.SelectNetworksRequest{
+		NetworkIDs: args,
+	}
+
+	if len(args) == 1 && args[0] == "all" {
+		req.All = true
+	}
+
+	if _, err := client.DeselectNetworks(cmd.Context(), req); err != nil {
+		return fmt.Errorf("failed to deselect networks: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println("Networks deselected successfully.")
+
+	return nil
+}

client/cmd/pprof.go

@@ -0,0 +1,33 @@
+//go:build pprof
+// +build pprof
+
+package cmd
+
+import (
+	"net/http"
+	_ "net/http/pprof"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func init() {
+	addr := pprofAddr()
+	go pprof(addr)
+}
+
+func pprofAddr() string {
+	listenAddr := os.Getenv("NB_PPROF_ADDR")
+	if listenAddr == "" {
+		return "localhost:6969"
+	}
+
+	return listenAddr
+}
+
+func pprof(listenAddr string) {
+	log.Infof("listening pprof on: %s\n", listenAddr)
+	if err := http.ListenAndServe(listenAddr, nil); err != nil {
+		log.Fatalf("Failed to start pprof: %v", err)
+	}
+}

client/cmd/root.go

@@ -38,6 +38,7 @@ const (
 	extraIFaceBlackListFlag = "extra-iface-blacklist"
 	dnsRouteIntervalFlag    = "dns-router-interval"
 	systemInfoFlag          = "system-info"
+	blockLANAccessFlag      = "block-lan-access"
 )
 
 var (
@@ -73,6 +74,7 @@ var (
 	anonymizeFlag           bool
 	debugSystemInfoFlag     bool
 	dnsRouteInterval        time.Duration
+	blockLANAccess          bool
 
 	rootCmd = &cobra.Command{
 		Use:          "netbird",
@@ -142,19 +144,20 @@ func init() {
 	rootCmd.AddCommand(loginCmd)
 	rootCmd.AddCommand(versionCmd)
 	rootCmd.AddCommand(sshCmd)
-	rootCmd.AddCommand(routesCmd)
+	rootCmd.AddCommand(networksCMD)
 	rootCmd.AddCommand(debugCmd)
 
 	serviceCmd.AddCommand(runCmd, startCmd, stopCmd, restartCmd) // service control commands are subcommands of service
 	serviceCmd.AddCommand(installCmd, uninstallCmd)              // service installer commands are subcommands of service
 
-	routesCmd.AddCommand(routesListCmd)
-	routesCmd.AddCommand(routesSelectCmd, routesDeselectCmd)
+	networksCMD.AddCommand(routesListCmd)
+	networksCMD.AddCommand(routesSelectCmd, routesDeselectCmd)
 
 	debugCmd.AddCommand(debugBundleCmd)
 	debugCmd.AddCommand(logCmd)
 	logCmd.AddCommand(logLevelCmd)
 	debugCmd.AddCommand(forCmd)
+	debugCmd.AddCommand(persistenceCmd)
 
 	upCmd.PersistentFlags().StringSliceVar(&natExternalIPs, externalIPMapFlag, nil,
 		`Sets external IPs maps between local addresses and interfaces.`+

client/cmd/route.go

@@ -1,174 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"strings"
-
-	"github.com/spf13/cobra"
-	"google.golang.org/grpc/status"
-
-	"github.com/netbirdio/netbird/client/proto"
-)
-
-var appendFlag bool
-
-var routesCmd = &cobra.Command{
-	Use:   "routes",
-	Short: "Manage network routes",
-	Long:  `Commands to list, select, or deselect network routes.`,
-}
-
-var routesListCmd = &cobra.Command{
-	Use:     "list",
-	Aliases: []string{"ls"},
-	Short:   "List routes",
-	Example: "  netbird routes list",
-	Long:    "List all available network routes.",
-	RunE:    routesList,
-}
-
-var routesSelectCmd = &cobra.Command{
-	Use:     "select route...|all",
-	Short:   "Select routes",
-	Long:    "Select a list of routes by identifiers or 'all' to clear all selections and to accept all (including new) routes.\nDefault mode is replace, use -a to append to already selected routes.",
-	Example: "  netbird routes select all\n  netbird routes select route1 route2\n  netbird routes select -a route3",
-	Args:    cobra.MinimumNArgs(1),
-	RunE:    routesSelect,
-}
-
-var routesDeselectCmd = &cobra.Command{
-	Use:     "deselect route...|all",
-	Short:   "Deselect routes",
-	Long:    "Deselect previously selected routes by identifiers or 'all' to disable accepting any routes.",
-	Example: "  netbird routes deselect all\n  netbird routes deselect route1 route2",
-	Args:    cobra.MinimumNArgs(1),
-	RunE:    routesDeselect,
-}
-
-func init() {
-	routesSelectCmd.PersistentFlags().BoolVarP(&appendFlag, "append", "a", false, "Append to current route selection instead of replacing")
-}
-
-func routesList(cmd *cobra.Command, _ []string) error {
-	conn, err := getClient(cmd)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-
-	client := proto.NewDaemonServiceClient(conn)
-	resp, err := client.ListRoutes(cmd.Context(), &proto.ListRoutesRequest{})
-	if err != nil {
-		return fmt.Errorf("failed to list routes: %v", status.Convert(err).Message())
-	}
-
-	if len(resp.Routes) == 0 {
-		cmd.Println("No routes available.")
-		return nil
-	}
-
-	printRoutes(cmd, resp)
-
-	return nil
-}
-
-func printRoutes(cmd *cobra.Command, resp *proto.ListRoutesResponse) {
-	cmd.Println("Available Routes:")
-	for _, route := range resp.Routes {
-		printRoute(cmd, route)
-	}
-}
-
-func printRoute(cmd *cobra.Command, route *proto.Route) {
-	selectedStatus := getSelectedStatus(route)
-	domains := route.GetDomains()
-
-	if len(domains) > 0 {
-		printDomainRoute(cmd, route, domains, selectedStatus)
-	} else {
-		printNetworkRoute(cmd, route, selectedStatus)
-	}
-}
-
-func getSelectedStatus(route *proto.Route) string {
-	if route.GetSelected() {
-		return "Selected"
-	}
-	return "Not Selected"
-}
-
-func printDomainRoute(cmd *cobra.Command, route *proto.Route, domains []string, selectedStatus string) {
-	cmd.Printf("\n  - ID: %s\n    Domains: %s\n    Status: %s\n", route.GetID(), strings.Join(domains, ", "), selectedStatus)
-	resolvedIPs := route.GetResolvedIPs()
-
-	if len(resolvedIPs) > 0 {
-		printResolvedIPs(cmd, domains, resolvedIPs)
-	} else {
-		cmd.Printf("    Resolved IPs: -\n")
-	}
-}
-
-func printNetworkRoute(cmd *cobra.Command, route *proto.Route, selectedStatus string) {
-	cmd.Printf("\n  - ID: %s\n    Network: %s\n    Status: %s\n", route.GetID(), route.GetNetwork(), selectedStatus)
-}
-
-func printResolvedIPs(cmd *cobra.Command, domains []string, resolvedIPs map[string]*proto.IPList) {
-	cmd.Printf("    Resolved IPs:\n")
-	for _, domain := range domains {
-		if ipList, exists := resolvedIPs[domain]; exists {
-			cmd.Printf("      [%s]: %s\n", domain, strings.Join(ipList.GetIps(), ", "))
-		}
-	}
-}
-
-func routesSelect(cmd *cobra.Command, args []string) error {
-	conn, err := getClient(cmd)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-
-	client := proto.NewDaemonServiceClient(conn)
-	req := &proto.SelectRoutesRequest{
-		RouteIDs: args,
-	}
-
-	if len(args) == 1 && args[0] == "all" {
-		req.All = true
-	} else if appendFlag {
-		req.Append = true
-	}
-
-	if _, err := client.SelectRoutes(cmd.Context(), req); err != nil {
-		return fmt.Errorf("failed to select routes: %v", status.Convert(err).Message())
-	}
-
-	cmd.Println("Routes selected successfully.")
-
-	return nil
-}
-
-func routesDeselect(cmd *cobra.Command, args []string) error {
-	conn, err := getClient(cmd)
-	if err != nil {
-		return err
-	}
-	defer conn.Close()
-
-	client := proto.NewDaemonServiceClient(conn)
-	req := &proto.SelectRoutesRequest{
-		RouteIDs: args,
-	}
-
-	if len(args) == 1 && args[0] == "all" {
-		req.All = true
-	}
-
-	if _, err := client.DeselectRoutes(cmd.Context(), req); err != nil {
-		return fmt.Errorf("failed to deselect routes: %v", status.Convert(err).Message())
-	}
-
-	cmd.Println("Routes deselected successfully.")
-
-	return nil
-}

client/cmd/ssh.go

@@ -9,7 +9,6 @@ import (
 	"strings"
 	"syscall"
 
-	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 
 	"github.com/netbirdio/netbird/client/internal"
@@ -73,7 +72,7 @@ var sshCmd = &cobra.Command{
 		go func() {
 			// blocking
 			if err := runSSH(sshctx, host, []byte(config.SSHKey), cmd); err != nil {
-				log.Debug(err)
+				cmd.Printf("Error: %v\n", err)
 				os.Exit(1)
 			}
 			cancel()

client/cmd/state.go

@@ -0,0 +1,181 @@
+package cmd
+
+import (
+	"fmt"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var (
+	allFlag bool
+)
+
+var stateCmd = &cobra.Command{
+	Use:   "state",
+	Short: "Manage daemon state",
+	Long:  "Provides commands for managing and inspecting the Netbird daemon state.",
+}
+
+var stateListCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List all stored states",
+	Long:    "Lists all registered states with their status and basic information.",
+	Example: "  netbird state list",
+	RunE:    stateList,
+}
+
+var stateCleanCmd = &cobra.Command{
+	Use:   "clean [state-name]",
+	Short: "Clean stored states",
+	Long: `Clean specific state or all states. The daemon must not be running.
+This will perform cleanup operations and remove the state.`,
+	Example: `  netbird state clean dns_state
+  netbird state clean --all`,
+	RunE: stateClean,
+	PreRunE: func(cmd *cobra.Command, args []string) error {
+		// Check mutual exclusivity between --all flag and state-name argument
+		if allFlag && len(args) > 0 {
+			return fmt.Errorf("cannot specify both --all flag and state name")
+		}
+		if !allFlag && len(args) != 1 {
+			return fmt.Errorf("requires a state name argument or --all flag")
+		}
+		return nil
+	},
+}
+
+var stateDeleteCmd = &cobra.Command{
+	Use:   "delete [state-name]",
+	Short: "Delete stored states",
+	Long: `Delete specific state or all states from storage. The daemon must not be running.
+This will remove the state without performing any cleanup operations.`,
+	Example: `  netbird state delete dns_state
+  netbird state delete --all`,
+	RunE: stateDelete,
+	PreRunE: func(cmd *cobra.Command, args []string) error {
+		// Check mutual exclusivity between --all flag and state-name argument
+		if allFlag && len(args) > 0 {
+			return fmt.Errorf("cannot specify both --all flag and state name")
+		}
+		if !allFlag && len(args) != 1 {
+			return fmt.Errorf("requires a state name argument or --all flag")
+		}
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(stateCmd)
+	stateCmd.AddCommand(stateListCmd, stateCleanCmd, stateDeleteCmd)
+
+	stateCleanCmd.Flags().BoolVarP(&allFlag, "all", "a", false, "Clean all states")
+	stateDeleteCmd.Flags().BoolVarP(&allFlag, "all", "a", false, "Delete all states")
+}
+
+func stateList(cmd *cobra.Command, _ []string) error {
+	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.ListStates(cmd.Context(), &proto.ListStatesRequest{})
+	if err != nil {
+		return fmt.Errorf("failed to list states: %v", status.Convert(err).Message())
+	}
+
+	cmd.Printf("\nStored states:\n\n")
+	for _, state := range resp.States {
+		cmd.Printf("- %s\n", state.Name)
+	}
+
+	return nil
+}
+
+func stateClean(cmd *cobra.Command, args []string) error {
+	var stateName string
+	if !allFlag {
+		stateName = args[0]
+	}
+
+	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.CleanState(cmd.Context(), &proto.CleanStateRequest{
+		StateName: stateName,
+		All:       allFlag,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to clean state: %v", status.Convert(err).Message())
+	}
+
+	if resp.CleanedStates == 0 {
+		cmd.Println("No states were cleaned")
+		return nil
+	}
+
+	if allFlag {
+		cmd.Printf("Successfully cleaned %d states\n", resp.CleanedStates)
+	} else {
+		cmd.Printf("Successfully cleaned state %q\n", stateName)
+	}
+
+	return nil
+}
+
+func stateDelete(cmd *cobra.Command, args []string) error {
+	var stateName string
+	if !allFlag {
+		stateName = args[0]
+	}
+
+	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.DeleteState(cmd.Context(), &proto.DeleteStateRequest{
+		StateName: stateName,
+		All:       allFlag,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to delete state: %v", status.Convert(err).Message())
+	}
+
+	if resp.DeletedStates == 0 {
+		cmd.Println("No states were deleted")
+		return nil
+	}
+
+	if allFlag {
+		cmd.Printf("Successfully deleted %d states\n", resp.DeletedStates)
+	} else {
+		cmd.Printf("Successfully deleted state %q\n", stateName)
+	}
+
+	return nil
+}

client/cmd/status.go

@@ -40,6 +40,7 @@ type peerStateDetailOutput struct {
 	Latency                time.Duration    `json:"latency" yaml:"latency"`
 	RosenpassEnabled       bool             `json:"quantumResistance" yaml:"quantumResistance"`
 	Routes                 []string         `json:"routes" yaml:"routes"`
+	Networks               []string         `json:"networks" yaml:"networks"`
 }
 
 type peersStateOutput struct {
@@ -98,6 +99,7 @@ type statusOutputOverview struct {
 	RosenpassEnabled    bool                       `json:"quantumResistance" yaml:"quantumResistance"`
 	RosenpassPermissive bool                       `json:"quantumResistancePermissive" yaml:"quantumResistancePermissive"`
 	Routes              []string                   `json:"routes" yaml:"routes"`
+	Networks            []string                   `json:"networks" yaml:"networks"`
 	NSServerGroups      []nsServerGroupStateOutput `json:"dnsServers" yaml:"dnsServers"`
 }
 
@@ -282,7 +284,8 @@ func convertToStatusOutputOverview(resp *proto.StatusResponse) statusOutputOverv
 		FQDN:                pbFullStatus.GetLocalPeerState().GetFqdn(),
 		RosenpassEnabled:    pbFullStatus.GetLocalPeerState().GetRosenpassEnabled(),
 		RosenpassPermissive: pbFullStatus.GetLocalPeerState().GetRosenpassPermissive(),
-		Routes:              pbFullStatus.GetLocalPeerState().GetRoutes(),
+		Routes:              pbFullStatus.GetLocalPeerState().GetNetworks(),
+		Networks:            pbFullStatus.GetLocalPeerState().GetNetworks(),
 		NSServerGroups:      mapNSGroups(pbFullStatus.GetDnsServers()),
 	}
 
@@ -390,7 +393,8 @@ func mapPeers(peers []*proto.PeerState) peersStateOutput {
 			TransferSent:           transferSent,
 			Latency:                pbPeerState.GetLatency().AsDuration(),
 			RosenpassEnabled:       pbPeerState.GetRosenpassEnabled(),
-			Routes:                 pbPeerState.GetRoutes(),
+			Routes:                 pbPeerState.GetNetworks(),
+			Networks:               pbPeerState.GetNetworks(),
 		}
 
 		peersStateDetail = append(peersStateDetail, peerState)
@@ -491,10 +495,10 @@ func parseGeneralSummary(overview statusOutputOverview, showURL bool, showRelays
 		relaysString = fmt.Sprintf("%d/%d Available", overview.Relays.Available, overview.Relays.Total)
 	}
 
-	routes := "-"
-	if len(overview.Routes) > 0 {
-		sort.Strings(overview.Routes)
-		routes = strings.Join(overview.Routes, ", ")
+	networks := "-"
+	if len(overview.Networks) > 0 {
+		sort.Strings(overview.Networks)
+		networks = strings.Join(overview.Networks, ", ")
 	}
 
 	var dnsServersString string
@@ -556,6 +560,7 @@ func parseGeneralSummary(overview statusOutputOverview, showURL bool, showRelays
 			"Interface type: %s\n"+
 			"Quantum resistance: %s\n"+
 			"Routes: %s\n"+
+			"Networks: %s\n"+
 			"Peers count: %s\n",
 		fmt.Sprintf("%s/%s%s", goos, goarch, goarm),
 		overview.DaemonVersion,
@@ -568,7 +573,8 @@ func parseGeneralSummary(overview statusOutputOverview, showURL bool, showRelays
 		interfaceIP,
 		interfaceTypeString,
 		rosenpassEnabledStatus,
-		routes,
+		networks,
+		networks,
 		peersCountString,
 	)
 	return summary
@@ -631,10 +637,10 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 			}
 		}
 
-		routes := "-"
-		if len(peerState.Routes) > 0 {
-			sort.Strings(peerState.Routes)
-			routes = strings.Join(peerState.Routes, ", ")
+		networks := "-"
+		if len(peerState.Networks) > 0 {
+			sort.Strings(peerState.Networks)
+			networks = strings.Join(peerState.Networks, ", ")
 		}
 
 		peerString := fmt.Sprintf(
@@ -652,6 +658,7 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 				"  Transfer status (received/sent) %s/%s\n"+
 				"  Quantum resistance: %s\n"+
 				"  Routes: %s\n"+
+				"  Networks: %s\n"+
 				"  Latency: %s\n",
 			peerState.FQDN,
 			peerState.IP,
@@ -668,7 +675,8 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 			toIEC(peerState.TransferReceived),
 			toIEC(peerState.TransferSent),
 			rosenpassEnabledStatus,
-			routes,
+			networks,
+			networks,
 			peerState.Latency.String(),
 		)
 
@@ -810,6 +818,14 @@ func anonymizePeerDetail(a *anonymize.Anonymizer, peer *peerStateDetailOutput) {
 
 	peer.RelayAddress = a.AnonymizeURI(peer.RelayAddress)
 
+	for i, route := range peer.Networks {
+		peer.Networks[i] = a.AnonymizeIPString(route)
+	}
+
+	for i, route := range peer.Networks {
+		peer.Networks[i] = a.AnonymizeRoute(route)
+	}
+
 	for i, route := range peer.Routes {
 		peer.Routes[i] = a.AnonymizeIPString(route)
 	}
@@ -850,6 +866,10 @@ func anonymizeOverview(a *anonymize.Anonymizer, overview *statusOutputOverview)
 		}
 	}
 
+	for i, route := range overview.Networks {
+		overview.Networks[i] = a.AnonymizeRoute(route)
+	}
+
 	for i, route := range overview.Routes {
 		overview.Routes[i] = a.AnonymizeRoute(route)
 	}

client/cmd/status_test.go

@@ -44,7 +44,7 @@ var resp = &proto.StatusResponse{
 				LastWireguardHandshake:     timestamppb.New(time.Date(2001, time.Month(1), 1, 1, 1, 2, 0, time.UTC)),
 				BytesRx:                    200,
 				BytesTx:                    100,
-				Routes: []string{
+				Networks: []string{
 					"10.1.0.0/24",
 				},
 				Latency: durationpb.New(time.Duration(10000000)),
@@ -93,7 +93,7 @@ var resp = &proto.StatusResponse{
 			PubKey:          "Some-Pub-Key",
 			KernelInterface: true,
 			Fqdn:            "some-localhost.awesome-domain.com",
-			Routes: []string{
+			Networks: []string{
 				"10.10.0.0/24",
 			},
 		},
@@ -149,6 +149,9 @@ var overview = statusOutputOverview{
 				Routes: []string{
 					"10.1.0.0/24",
 				},
+				Networks: []string{
+					"10.1.0.0/24",
+				},
 				Latency: time.Duration(10000000),
 			},
 			{
@@ -230,6 +233,9 @@ var overview = statusOutputOverview{
 	Routes: []string{
 		"10.10.0.0/24",
 	},
+	Networks: []string{
+		"10.10.0.0/24",
+	},
 }
 
 func TestConversionFromFullStatusToOutputOverview(t *testing.T) {
@@ -295,6 +301,9 @@ func TestParsingToJSON(t *testing.T) {
                 "quantumResistance": false,
                 "routes": [
                   "10.1.0.0/24"
+                ],
+                "networks": [
+                  "10.1.0.0/24"
                 ]
               },
               {
@@ -318,7 +327,8 @@ func TestParsingToJSON(t *testing.T) {
                 "transferSent": 1000,
 				"latency": 10000000,
                 "quantumResistance": false,
-                "routes": null
+                "routes": null,
+                "networks": null
               }
             ]
           },
@@ -359,6 +369,9 @@ func TestParsingToJSON(t *testing.T) {
           "routes": [
             "10.10.0.0/24"
           ],
+          "networks": [
+            "10.10.0.0/24"
+          ],
           "dnsServers": [
             {
               "servers": [
@@ -418,6 +431,8 @@ func TestParsingToYAML(t *testing.T) {
           quantumResistance: false
           routes:
             - 10.1.0.0/24
+          networks:
+            - 10.1.0.0/24
         - fqdn: peer-2.awesome-domain.com
           netbirdIp: 192.168.178.102
           publicKey: Pubkey2
@@ -437,6 +452,7 @@ func TestParsingToYAML(t *testing.T) {
           latency: 10ms
           quantumResistance: false
           routes: []
+          networks: []
 cliVersion: development
 daemonVersion: 0.14.1
 management:
@@ -465,6 +481,8 @@ quantumResistance: false
 quantumResistancePermissive: false
 routes:
     - 10.10.0.0/24
+networks:
+    - 10.10.0.0/24
 dnsServers:
     - servers:
         - 8.8.8.8:53
@@ -509,6 +527,7 @@ func TestParsingToDetail(t *testing.T) {
   Transfer status (received/sent) 200 B/100 B
   Quantum resistance: false
   Routes: 10.1.0.0/24
+  Networks: 10.1.0.0/24
   Latency: 10ms
 
  peer-2.awesome-domain.com:
@@ -525,6 +544,7 @@ func TestParsingToDetail(t *testing.T) {
   Transfer status (received/sent) 2.0 KiB/1000 B
   Quantum resistance: false
   Routes: -
+  Networks: -
   Latency: 10ms
 
 OS: %s/%s
@@ -543,6 +563,7 @@ NetBird IP: 192.168.178.100/16
 Interface type: Kernel
 Quantum resistance: false
 Routes: 10.10.0.0/24
+Networks: 10.10.0.0/24
 Peers count: 2/2 Connected
 `, lastConnectionUpdate1, lastHandshake1, lastConnectionUpdate2, lastHandshake2, runtime.GOOS, runtime.GOARCH, overview.CliVersion)
 
@@ -564,6 +585,7 @@ NetBird IP: 192.168.178.100/16
 Interface type: Kernel
 Quantum resistance: false
 Routes: 10.10.0.0/24
+Networks: 10.10.0.0/24
 Peers count: 2/2 Connected
 `
 

client/cmd/system.go

@@ -0,0 +1,31 @@
+package cmd
+
+// Flag constants for system configuration
+const (
+	disableClientRoutesFlag = "disable-client-routes"
+	disableServerRoutesFlag = "disable-server-routes"
+	disableDNSFlag          = "disable-dns"
+	disableFirewallFlag     = "disable-firewall"
+)
+
+var (
+	disableClientRoutes bool
+	disableServerRoutes bool
+	disableDNS          bool
+	disableFirewall     bool
+)
+
+func init() {
+	// Add system flags to upCmd
+	upCmd.PersistentFlags().BoolVar(&disableClientRoutes, disableClientRoutesFlag, false,
+		"Disable client routes. If enabled, the client won't process client routes received from the management service.")
+
+	upCmd.PersistentFlags().BoolVar(&disableServerRoutes, disableServerRoutesFlag, false,
+		"Disable server routes. If enabled, the client won't act as a router for server routes received from the management service.")
+
+	upCmd.PersistentFlags().BoolVar(&disableDNS, disableDNSFlag, false,
+		"Disable DNS. If enabled, the client won't configure DNS settings.")
+
+	upCmd.PersistentFlags().BoolVar(&disableFirewall, disableFirewallFlag, false,
+		"Disable firewall configuration. If enabled, the client won't modify firewall rules.")
+}

client/cmd/testutil_test.go

@@ -10,6 +10,8 @@ import (
 	"go.opentelemetry.io/otel"
 
 	"github.com/netbirdio/netbird/management/server/activity"
+	"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/util"
@@ -71,7 +73,7 @@ func startManagement(t *testing.T, config *mgmt.Config, testFile string) (*grpc.
 		t.Fatal(err)
 	}
 	s := grpc.NewServer()
-	store, cleanUp, err := mgmt.NewTestStoreFromSQL(context.Background(), testFile, t.TempDir())
+	store, cleanUp, err := store.NewTestStoreFromSQL(context.Background(), testFile, t.TempDir())
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -93,7 +95,7 @@ func startManagement(t *testing.T, config *mgmt.Config, testFile string) (*grpc.
 	}
 
 	secretsManager := mgmt.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig, config.Relay)
-	mgmtServer, err := mgmt.NewServer(context.Background(), config, accountManager, peersUpdateManager, secretsManager, nil, nil)
+	mgmtServer, err := mgmt.NewServer(context.Background(), config, accountManager, settings.NewManager(store), peersUpdateManager, secretsManager, nil, nil)
 	if err != nil {
 		t.Fatal(err)
 	}

client/cmd/trace.go

@@ -0,0 +1,137 @@
+package cmd
+
+import (
+	"fmt"
+	"math/rand"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var traceCmd = &cobra.Command{
+	Use:   "trace <direction> <source-ip> <dest-ip>",
+	Short: "Trace a packet through the firewall",
+	Example: `
+  netbird debug trace in 192.168.1.10 10.10.0.2 -p tcp --sport 12345 --dport 443 --syn --ack
+  netbird debug trace out 10.10.0.1 8.8.8.8 -p udp  --dport 53
+  netbird debug trace in 10.10.0.2 10.10.0.1 -p icmp --type 8 --code 0
+  netbird debug trace in 100.64.1.1 self -p tcp --dport 80`,
+	Args: cobra.ExactArgs(3),
+	RunE: tracePacket,
+}
+
+func init() {
+	debugCmd.AddCommand(traceCmd)
+
+	traceCmd.Flags().StringP("protocol", "p", "tcp", "Protocol (tcp/udp/icmp)")
+	traceCmd.Flags().Uint16("sport", 0, "Source port")
+	traceCmd.Flags().Uint16("dport", 0, "Destination port")
+	traceCmd.Flags().Uint8("icmp-type", 0, "ICMP type")
+	traceCmd.Flags().Uint8("icmp-code", 0, "ICMP code")
+	traceCmd.Flags().Bool("syn", false, "TCP SYN flag")
+	traceCmd.Flags().Bool("ack", false, "TCP ACK flag")
+	traceCmd.Flags().Bool("fin", false, "TCP FIN flag")
+	traceCmd.Flags().Bool("rst", false, "TCP RST flag")
+	traceCmd.Flags().Bool("psh", false, "TCP PSH flag")
+	traceCmd.Flags().Bool("urg", false, "TCP URG flag")
+}
+
+func tracePacket(cmd *cobra.Command, args []string) error {
+	direction := strings.ToLower(args[0])
+	if direction != "in" && direction != "out" {
+		return fmt.Errorf("invalid direction: use 'in' or 'out'")
+	}
+
+	protocol := cmd.Flag("protocol").Value.String()
+	if protocol != "tcp" && protocol != "udp" && protocol != "icmp" {
+		return fmt.Errorf("invalid protocol: use tcp/udp/icmp")
+	}
+
+	sport, err := cmd.Flags().GetUint16("sport")
+	if err != nil {
+		return fmt.Errorf("invalid source port: %v", err)
+	}
+	dport, err := cmd.Flags().GetUint16("dport")
+	if err != nil {
+		return fmt.Errorf("invalid destination port: %v", err)
+	}
+
+	// For TCP/UDP, generate random ephemeral port (49152-65535) if not specified
+	if protocol != "icmp" {
+		if sport == 0 {
+			sport = uint16(rand.Intn(16383) + 49152)
+		}
+		if dport == 0 {
+			dport = uint16(rand.Intn(16383) + 49152)
+		}
+	}
+
+	var tcpFlags *proto.TCPFlags
+	if protocol == "tcp" {
+		syn, _ := cmd.Flags().GetBool("syn")
+		ack, _ := cmd.Flags().GetBool("ack")
+		fin, _ := cmd.Flags().GetBool("fin")
+		rst, _ := cmd.Flags().GetBool("rst")
+		psh, _ := cmd.Flags().GetBool("psh")
+		urg, _ := cmd.Flags().GetBool("urg")
+
+		tcpFlags = &proto.TCPFlags{
+			Syn: syn,
+			Ack: ack,
+			Fin: fin,
+			Rst: rst,
+			Psh: psh,
+			Urg: urg,
+		}
+	}
+
+	icmpType, _ := cmd.Flags().GetUint32("icmp-type")
+	icmpCode, _ := cmd.Flags().GetUint32("icmp-code")
+
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	resp, err := client.TracePacket(cmd.Context(), &proto.TracePacketRequest{
+		SourceIp:        args[1],
+		DestinationIp:   args[2],
+		Protocol:        protocol,
+		SourcePort:      uint32(sport),
+		DestinationPort: uint32(dport),
+		Direction:       direction,
+		TcpFlags:        tcpFlags,
+		IcmpType:        &icmpType,
+		IcmpCode:        &icmpCode,
+	})
+	if err != nil {
+		return fmt.Errorf("trace failed: %v", status.Convert(err).Message())
+	}
+
+	printTrace(cmd, args[1], args[2], protocol, sport, dport, resp)
+	return nil
+}
+
+func printTrace(cmd *cobra.Command, src, dst, proto string, sport, dport uint16, resp *proto.TracePacketResponse) {
+	cmd.Printf("Packet trace %s:%d -> %s:%d (%s)\n\n", src, sport, dst, dport, strings.ToUpper(proto))
+
+	for _, stage := range resp.Stages {
+		if stage.ForwardingDetails != nil {
+			cmd.Printf("%s: %s [%s]\n", stage.Name, stage.Message, *stage.ForwardingDetails)
+		} else {
+			cmd.Printf("%s: %s\n", stage.Name, stage.Message)
+		}
+	}
+
+	disposition := map[bool]string{
+		true:  "\033[32mALLOWED\033[0m", // Green
+		false: "\033[31mDENIED\033[0m",  // Red
+	}[resp.FinalDisposition]
+
+	cmd.Printf("\nFinal disposition: %s\n", disposition)
+}

client/cmd/up.go

@@ -48,6 +48,7 @@ func init() {
 	)
 	upCmd.PersistentFlags().StringSliceVar(&extraIFaceBlackList, extraIFaceBlackListFlag, nil, "Extra list of default interfaces to ignore for listening")
 	upCmd.PersistentFlags().DurationVar(&dnsRouteInterval, dnsRouteIntervalFlag, time.Minute, "DNS route update interval")
+	upCmd.PersistentFlags().BoolVar(&blockLANAccess, blockLANAccessFlag, false, "Block access to local networks (LAN) when using this peer as a router or exit node")
 }
 
 func upFunc(cmd *cobra.Command, args []string) error {
@@ -147,6 +148,23 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 		ic.DNSRouteInterval = &dnsRouteInterval
 	}
 
+	if cmd.Flag(disableClientRoutesFlag).Changed {
+		ic.DisableClientRoutes = &disableClientRoutes
+	}
+	if cmd.Flag(disableServerRoutesFlag).Changed {
+		ic.DisableServerRoutes = &disableServerRoutes
+	}
+	if cmd.Flag(disableDNSFlag).Changed {
+		ic.DisableDNS = &disableDNS
+	}
+	if cmd.Flag(disableFirewallFlag).Changed {
+		ic.DisableFirewall = &disableFirewall
+	}
+
+	if cmd.Flag(blockLANAccessFlag).Changed {
+		ic.BlockLANAccess = &blockLANAccess
+	}
+
 	providedSetupKey, err := getSetupKey()
 	if err != nil {
 		return err
@@ -172,7 +190,7 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 	r.GetFullStatus()
 
 	connectClient := internal.NewConnectClient(ctx, config, r)
-	return connectClient.Run()
+	return connectClient.Run(nil)
 }
 
 func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
@@ -264,6 +282,23 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 		loginRequest.DnsRouteInterval = durationpb.New(dnsRouteInterval)
 	}
 
+	if cmd.Flag(disableClientRoutesFlag).Changed {
+		loginRequest.DisableClientRoutes = &disableClientRoutes
+	}
+	if cmd.Flag(disableServerRoutesFlag).Changed {
+		loginRequest.DisableServerRoutes = &disableServerRoutes
+	}
+	if cmd.Flag(disableDNSFlag).Changed {
+		loginRequest.DisableDns = &disableDNS
+	}
+	if cmd.Flag(disableFirewallFlag).Changed {
+		loginRequest.DisableFirewall = &disableFirewall
+	}
+
+	if cmd.Flag(blockLANAccessFlag).Changed {
+		loginRequest.BlockLanAccess = &blockLANAccess
+	}
+
 	var loginErr error
 
 	var loginResp *proto.LoginResponse

client/configs/configs.go

@@ -0,0 +1,24 @@
+package configs
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+)
+
+var StateDir string
+
+func init() {
+	StateDir = os.Getenv("NB_STATE_DIR")
+	if StateDir != "" {
+		return
+	}
+	switch runtime.GOOS {
+	case "windows":
+		StateDir = filepath.Join(os.Getenv("PROGRAMDATA"), "Netbird")
+	case "darwin", "linux":
+		StateDir = "/var/lib/netbird"
+	case "freebsd", "openbsd", "netbsd", "dragonfly":
+		StateDir = "/var/db/netbird"
+	}
+}

client/firewall/create.go

@@ -14,13 +14,13 @@ import (
 )
 
 // NewFirewall creates a firewall manager instance
-func NewFirewall(iface IFaceMapper, _ *statemanager.Manager) (firewall.Manager, error) {
+func NewFirewall(iface IFaceMapper, _ *statemanager.Manager, disableServerRoutes bool) (firewall.Manager, error) {
 	if !iface.IsUserspaceBind() {
 		return nil, fmt.Errorf("not implemented for this OS: %s", runtime.GOOS)
 	}
 
 	// use userspace packet filtering firewall
-	fm, err := uspfilter.Create(iface)
+	fm, err := uspfilter.Create(iface, disableServerRoutes)
 	if err != nil {
 		return nil, err
 	}

client/firewall/create_linux.go

@@ -33,12 +33,12 @@ const SKIP_NFTABLES_ENV = "NB_SKIP_NFTABLES_CHECK"
 // FWType is the type for the firewall type
 type FWType int
 
-func NewFirewall(iface IFaceMapper, stateManager *statemanager.Manager) (firewall.Manager, error) {
+func NewFirewall(iface IFaceMapper, stateManager *statemanager.Manager, disableServerRoutes bool) (firewall.Manager, error) {
 	// on the linux system we try to user nftables or iptables
 	// in any case, because we need to allow netbird interface traffic
 	// so we use AllowNetbird traffic from these firewall managers
 	// for the userspace packet filtering firewall
-	fm, err := createNativeFirewall(iface, stateManager)
+	fm, err := createNativeFirewall(iface, stateManager, disableServerRoutes)
 
 	if !iface.IsUserspaceBind() {
 		return fm, err
@@ -47,10 +47,10 @@ func NewFirewall(iface IFaceMapper, stateManager *statemanager.Manager) (firewal
 	if err != nil {
 		log.Warnf("failed to create native firewall: %v. Proceeding with userspace", err)
 	}
-	return createUserspaceFirewall(iface, fm)
+	return createUserspaceFirewall(iface, fm, disableServerRoutes)
 }
 
-func createNativeFirewall(iface IFaceMapper, stateManager *statemanager.Manager) (firewall.Manager, error) {
+func createNativeFirewall(iface IFaceMapper, stateManager *statemanager.Manager, routes bool) (firewall.Manager, error) {
 	fm, err := createFW(iface)
 	if err != nil {
 		return nil, fmt.Errorf("create firewall: %s", err)
@@ -77,12 +77,12 @@ func createFW(iface IFaceMapper) (firewall.Manager, error) {
 	}
 }
 
-func createUserspaceFirewall(iface IFaceMapper, fm firewall.Manager) (firewall.Manager, error) {
+func createUserspaceFirewall(iface IFaceMapper, fm firewall.Manager, disableServerRoutes bool) (firewall.Manager, error) {
 	var errUsp error
 	if fm != nil {
-		fm, errUsp = uspfilter.CreateWithNativeFirewall(iface, fm)
+		fm, errUsp = uspfilter.CreateWithNativeFirewall(iface, fm, disableServerRoutes)
 	} else {
-		fm, errUsp = uspfilter.Create(iface)
+		fm, errUsp = uspfilter.Create(iface, disableServerRoutes)
 	}
 
 	if errUsp != nil {

client/firewall/iface.go

@@ -1,6 +1,8 @@
 package firewall
 
 import (
+	wgdevice "golang.zx2c4.com/wireguard/device"
+
 	"github.com/netbirdio/netbird/client/iface/device"
 )
 
@@ -10,4 +12,6 @@ type IFaceMapper interface {
 	Address() device.WGAddress
 	IsUserspaceBind() bool
 	SetFilter(device.PacketFilter) error
+	GetDevice() *device.FilteredDevice
+	GetWGDevice() *wgdevice.Device
 }

client/firewall/iptables/acl_linux.go

@@ -3,7 +3,7 @@ package iptables
 import (
 	"fmt"
 	"net"
-	"strconv"
+	"slices"
 
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/google/uuid"
@@ -19,8 +19,7 @@ const (
 	tableName = "filter"
 
 	// rules chains contains the effective ACL rules
-	chainNameInputRules  = "NETBIRD-ACL-INPUT"
-	chainNameOutputRules = "NETBIRD-ACL-OUTPUT"
+	chainNameInputRules = "NETBIRD-ACL-INPUT"
 )
 
 type aclEntries map[string][][]string
@@ -84,28 +83,22 @@ func (m *aclManager) AddPeerFiltering(
 	protocol firewall.Protocol,
 	sPort *firewall.Port,
 	dPort *firewall.Port,
-	direction firewall.RuleDirection,
 	action firewall.Action,
 	ipsetName string,
 ) ([]firewall.Rule, error) {
-	var dPortVal, sPortVal string
-	if dPort != nil && dPort.Values != nil {
-		// TODO: we support only one port per rule in current implementation of ACLs
-		dPortVal = strconv.Itoa(dPort.Values[0])
-	}
-	if sPort != nil && sPort.Values != nil {
-		sPortVal = strconv.Itoa(sPort.Values[0])
-	}
+	chain := chainNameInputRules
 
-	var chain string
-	if direction == firewall.RuleDirectionOUT {
-		chain = chainNameOutputRules
-	} else {
-		chain = chainNameInputRules
-	}
+	ipsetName = transformIPsetName(ipsetName, sPort, dPort)
+	specs := filterRuleSpecs(ip, string(protocol), sPort, dPort, action, ipsetName)
 
-	ipsetName = transformIPsetName(ipsetName, sPortVal, dPortVal)
-	specs := filterRuleSpecs(ip, string(protocol), sPortVal, dPortVal, direction, 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 := ipset.Add(ipsetName, ip.String()); err != nil {
@@ -137,7 +130,7 @@ func (m *aclManager) AddPeerFiltering(
 		m.ipsetStore.addIpList(ipsetName, ipList)
 	}
 
-	ok, err := m.iptablesClient.Exists("filter", chain, specs...)
+	ok, err := m.iptablesClient.Exists(tableFilter, chain, specs...)
 	if err != nil {
 		return nil, fmt.Errorf("failed to check rule: %w", err)
 	}
@@ -145,16 +138,22 @@ func (m *aclManager) AddPeerFiltering(
 		return nil, fmt.Errorf("rule already exists")
 	}
 
-	if err := m.iptablesClient.Append("filter", chain, specs...); err != nil {
+	if err := m.iptablesClient.Append(tableFilter, chain, specs...); 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,
-		ipsetName: ipsetName,
-		ip:        ip.String(),
-		chain:     chain,
+		ruleID:      uuid.New().String(),
+		specs:       specs,
+		mangleSpecs: mangleSpecs,
+		ipsetName:   ipsetName,
+		ip:          ip.String(),
+		chain:       chain,
 	}
 
 	m.updateState()
@@ -197,6 +196,12 @@ func (m *aclManager) DeletePeerRule(rule firewall.Rule) error {
 		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)
+		}
+	}
+
 	m.updateState()
 
 	return nil
@@ -214,28 +219,7 @@ func (m *aclManager) Reset() error {
 
 // todo write less destructive cleanup mechanism
 func (m *aclManager) cleanChains() error {
-	ok, err := m.iptablesClient.ChainExists(tableName, chainNameOutputRules)
-	if err != nil {
-		log.Debugf("failed to list chains: %s", err)
-		return err
-	}
-	if ok {
-		rules := m.entries["OUTPUT"]
-		for _, rule := range rules {
-			err := m.iptablesClient.DeleteIfExists(tableName, "OUTPUT", rule...)
-			if err != nil {
-				log.Errorf("failed to delete rule: %v, %s", rule, err)
-			}
-		}
-
-		err = m.iptablesClient.ClearAndDeleteChain(tableName, chainNameOutputRules)
-		if err != nil {
-			log.Debugf("failed to clear and delete %s chain: %s", chainNameOutputRules, err)
-			return err
-		}
-	}
-
-	ok, err = m.iptablesClient.ChainExists(tableName, chainNameInputRules)
+	ok, err := m.iptablesClient.ChainExists(tableName, chainNameInputRules)
 	if err != nil {
 		log.Debugf("failed to list chains: %s", err)
 		return err
@@ -295,12 +279,6 @@ func (m *aclManager) createDefaultChains() error {
 		return err
 	}
 
-	// chain netbird-acl-output-rules
-	if err := m.iptablesClient.NewChain(tableName, chainNameOutputRules); err != nil {
-		log.Debugf("failed to create '%s' chain: %s", chainNameOutputRules, err)
-		return err
-	}
-
 	for chainName, rules := range m.entries {
 		for _, rule := range rules {
 			if err := m.iptablesClient.InsertUnique(tableName, chainName, 1, rule...); err != nil {
@@ -329,21 +307,13 @@ func (m *aclManager) createDefaultChains() error {
 
 // 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.
-
-// The OUTPUT chain gets an extra rule to allow traffic to any set up routes, the return traffic is handled by the INPUT related/established 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...))
 
-	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "-j", "DROP"})
-	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "-j", chainNameOutputRules})
-	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "!", "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
-	m.appendToEntries("OUTPUT", append([]string{"-o", m.wgIface.Name()}, established...))
-
 	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", "DROP"})
 	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", m.routingFwChainName})
 	m.appendToEntries("FORWARD", append([]string{"-o", m.wgIface.Name()}, established...))
@@ -352,17 +322,10 @@ func (m *aclManager) seedInitialEntries() {
 func (m *aclManager) seedInitialOptionalEntries() {
 	m.optionalEntries["FORWARD"] = []entry{
 		{
-			spec:     []string{"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected), "-j", chainNameInputRules},
+			spec:     []string{"-m", "mark", "--mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected), "-j", "ACCEPT"},
 			position: 2,
 		},
 	}
-
-	m.optionalEntries["PREROUTING"] = []entry{
-		{
-			spec:     []string{"-t", "mangle", "-i", m.wgIface.Name(), "-m", "addrtype", "--dst-type", "LOCAL", "-j", "MARK", "--set-mark", fmt.Sprintf("%#x", nbnet.PreroutingFwmarkRedirected)},
-			position: 1,
-		},
-	}
 }
 
 func (m *aclManager) appendToEntries(chainName string, spec []string) {
@@ -396,42 +359,26 @@ func (m *aclManager) updateState() {
 }
 
 // filterRuleSpecs returns the specs of a filtering rule
-func filterRuleSpecs(
-	ip net.IP, protocol string, sPort, dPort string, direction firewall.RuleDirection, action firewall.Action, ipsetName string,
-) (specs []string) {
+func filterRuleSpecs(ip net.IP, protocol string, sPort, dPort *firewall.Port, action firewall.Action, ipsetName string) (specs []string) {
 	matchByIP := true
 	// don't use IP matching if IP is ip 0.0.0.0
 	if ip.String() == "0.0.0.0" {
 		matchByIP = false
 	}
-	switch direction {
-	case firewall.RuleDirectionIN:
-		if matchByIP {
-			if ipsetName != "" {
-				specs = append(specs, "-m", "set", "--set", ipsetName, "src")
-			} else {
-				specs = append(specs, "-s", ip.String())
-			}
-		}
-	case firewall.RuleDirectionOUT:
-		if matchByIP {
-			if ipsetName != "" {
-				specs = append(specs, "-m", "set", "--set", ipsetName, "dst")
-			} else {
-				specs = append(specs, "-d", ip.String())
-			}
+
+	if matchByIP {
+		if ipsetName != "" {
+			specs = append(specs, "-m", "set", "--set", ipsetName, "src")
+		} else {
+			specs = append(specs, "-s", ip.String())
 		}
 	}
 	if protocol != "all" {
 		specs = append(specs, "-p", protocol)
 	}
-	if sPort != "" {
-		specs = append(specs, "--sport", sPort)
-	}
-	if dPort != "" {
-		specs = append(specs, "--dport", dPort)
-	}
-	return append(specs, "-j", actionToStr(action))
+	specs = append(specs, applyPort("--sport", sPort)...)
+	specs = append(specs, applyPort("--dport", dPort)...)
+	return specs
 }
 
 func actionToStr(action firewall.Action) string {
@@ -441,15 +388,15 @@ func actionToStr(action firewall.Action) string {
 	return "DROP"
 }
 
-func transformIPsetName(ipsetName string, sPort, dPort string) string {
+func transformIPsetName(ipsetName string, sPort, dPort *firewall.Port) string {
 	switch {
 	case ipsetName == "":
 		return ""
-	case sPort != "" && dPort != "":
+	case sPort != nil && dPort != nil:
 		return ipsetName + "-sport-dport"
-	case sPort != "":
+	case sPort != nil:
 		return ipsetName + "-sport"
-	case dPort != "":
+	case dPort != nil:
 		return ipsetName + "-dport"
 	default:
 		return ipsetName

client/firewall/iptables/manager_linux.go

@@ -100,15 +100,14 @@ func (m *Manager) AddPeerFiltering(
 	protocol firewall.Protocol,
 	sPort *firewall.Port,
 	dPort *firewall.Port,
-	direction firewall.RuleDirection,
 	action firewall.Action,
 	ipsetName string,
-	comment string,
+	_ string,
 ) ([]firewall.Rule, error) {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.aclMgr.AddPeerFiltering(ip, protocol, sPort, dPort, direction, action, ipsetName)
+	return m.aclMgr.AddPeerFiltering(ip, protocol, sPort, dPort, action, ipsetName)
 }
 
 func (m *Manager) AddRouteFiltering(
@@ -197,34 +196,28 @@ func (m *Manager) AllowNetbird() error {
 	}
 
 	_, err := m.AddPeerFiltering(
-		net.ParseIP("0.0.0.0"),
+		net.IP{0, 0, 0, 0},
 		"all",
 		nil,
 		nil,
-		firewall.RuleDirectionIN,
 		firewall.ActionAccept,
 		"",
 		"",
 	)
 	if err != nil {
-		return fmt.Errorf("failed to allow netbird interface traffic: %w", err)
+		return fmt.Errorf("allow netbird interface traffic: %w", err)
 	}
-	_, err = m.AddPeerFiltering(
-		net.ParseIP("0.0.0.0"),
-		"all",
-		nil,
-		nil,
-		firewall.RuleDirectionOUT,
-		firewall.ActionAccept,
-		"",
-		"",
-	)
-	return err
+	return nil
 }
 
 // Flush doesn't need to be implemented for this manager
 func (m *Manager) Flush() error { return nil }
 
+// SetLogLevel sets the log level for the firewall manager
+func (m *Manager) SetLogLevel(log.Level) {
+	// not supported
+}
+
 func getConntrackEstablished() []string {
 	return []string{"-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}
 }

client/firewall/iptables/manager_linux_test.go

@@ -68,27 +68,14 @@ func TestIptablesManager(t *testing.T) {
 		time.Sleep(time.Second)
 	}()
 
-	var rule1 []fw.Rule
-	t.Run("add first rule", func(t *testing.T) {
-		ip := net.ParseIP("10.20.0.2")
-		port := &fw.Port{Values: []int{8080}}
-		rule1, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
-		require.NoError(t, err, "failed to add rule")
-
-		for _, r := range rule1 {
-			checkRuleSpecs(t, ipv4Client, chainNameOutputRules, true, r.(*Rule).specs...)
-		}
-
-	})
-
 	var rule2 []fw.Rule
 	t.Run("add second rule", func(t *testing.T) {
 		ip := net.ParseIP("10.20.0.3")
 		port := &fw.Port{
-			Values: []int{8043: 8046},
+			IsRange: true,
+			Values:  []uint16{8043, 8046},
 		}
-		rule2, err = manager.AddPeerFiltering(
-			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTPS traffic from ports range")
+		rule2, err = manager.AddPeerFiltering(ip, "tcp", port, nil, fw.ActionAccept, "", "accept HTTPS traffic from ports range")
 		require.NoError(t, err, "failed to add rule")
 
 		for _, r := range rule2 {
@@ -97,15 +84,6 @@ func TestIptablesManager(t *testing.T) {
 		}
 	})
 
-	t.Run("delete first rule", func(t *testing.T) {
-		for _, r := range rule1 {
-			err := manager.DeletePeerRule(r)
-			require.NoError(t, err, "failed to delete rule")
-
-			checkRuleSpecs(t, ipv4Client, chainNameOutputRules, false, r.(*Rule).specs...)
-		}
-	})
-
 	t.Run("delete second rule", func(t *testing.T) {
 		for _, r := range rule2 {
 			err := manager.DeletePeerRule(r)
@@ -118,8 +96,8 @@ func TestIptablesManager(t *testing.T) {
 	t.Run("reset check", func(t *testing.T) {
 		// add second rule
 		ip := net.ParseIP("10.20.0.3")
-		port := &fw.Port{Values: []int{5353}}
-		_, err = manager.AddPeerFiltering(ip, "udp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept Fake DNS traffic")
+		port := &fw.Port{Values: []uint16{5353}}
+		_, err = manager.AddPeerFiltering(ip, "udp", nil, port, fw.ActionAccept, "", "accept Fake DNS traffic")
 		require.NoError(t, err, "failed to add rule")
 
 		err = manager.Reset(nil)
@@ -135,9 +113,6 @@ func TestIptablesManager(t *testing.T) {
 }
 
 func TestIptablesManagerIPSet(t *testing.T) {
-	ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
-	require.NoError(t, err)
-
 	mock := &iFaceMock{
 		NameFunc: func() string {
 			return "lo"
@@ -167,33 +142,13 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		time.Sleep(time.Second)
 	}()
 
-	var rule1 []fw.Rule
-	t.Run("add first rule with set", func(t *testing.T) {
-		ip := net.ParseIP("10.20.0.2")
-		port := &fw.Port{Values: []int{8080}}
-		rule1, err = manager.AddPeerFiltering(
-			ip, "tcp", nil, port, fw.RuleDirectionOUT,
-			fw.ActionAccept, "default", "accept HTTP traffic",
-		)
-		require.NoError(t, err, "failed to add rule")
-
-		for _, r := range rule1 {
-			checkRuleSpecs(t, ipv4Client, chainNameOutputRules, true, r.(*Rule).specs...)
-			require.Equal(t, r.(*Rule).ipsetName, "default-dport", "ipset name must be set")
-			require.Equal(t, r.(*Rule).ip, "10.20.0.2", "ipset IP must be set")
-		}
-	})
-
 	var rule2 []fw.Rule
 	t.Run("add second rule", func(t *testing.T) {
 		ip := net.ParseIP("10.20.0.3")
 		port := &fw.Port{
-			Values: []int{443},
+			Values: []uint16{443},
 		}
-		rule2, err = manager.AddPeerFiltering(
-			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept,
-			"default", "accept HTTPS traffic from ports range",
-		)
+		rule2, err = manager.AddPeerFiltering(ip, "tcp", port, nil, fw.ActionAccept, "default", "accept HTTPS traffic from ports range")
 		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")
@@ -201,15 +156,6 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		}
 	})
 
-	t.Run("delete first rule", func(t *testing.T) {
-		for _, r := range rule1 {
-			err := manager.DeletePeerRule(r)
-			require.NoError(t, err, "failed to delete rule")
-
-			require.NotContains(t, manager.aclMgr.ipsetStore.ipsets, r.(*Rule).ruleID, "rule must be removed form the ruleset index")
-		}
-	})
-
 	t.Run("delete second rule", func(t *testing.T) {
 		for _, r := range rule2 {
 			err := manager.DeletePeerRule(r)
@@ -269,12 +215,8 @@ func TestIptablesCreatePerformance(t *testing.T) {
 			ip := net.ParseIP("10.20.0.100")
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
-				port := &fw.Port{Values: []int{1000 + i}}
-				if i%2 == 0 {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
-				} else {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
-				}
+				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
+				_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.ActionAccept, "", "accept HTTP traffic")
 
 				require.NoError(t, err, "failed to add rule")
 			}

client/firewall/iptables/router_linux.go

@@ -135,7 +135,16 @@ func (r *router) AddRouteFiltering(
 	}
 
 	rule := genRouteFilteringRuleSpec(params)
-	if err := r.iptablesClient.Append(tableFilter, chainRTFWD, rule...); err != nil {
+	// Insert DROP rules at the beginning, append ACCEPT rules at the end
+	var err error
+	if action == firewall.ActionDrop {
+		// after the established rule
+		err = r.iptablesClient.Insert(tableFilter, chainRTFWD, 2, rule...)
+	} else {
+		err = r.iptablesClient.Append(tableFilter, chainRTFWD, rule...)
+	}
+
+	if err != nil {
 		return nil, fmt.Errorf("add route rule: %v", err)
 	}
 
@@ -590,10 +599,10 @@ func applyPort(flag string, port *firewall.Port) []string {
 	if len(port.Values) > 1 {
 		portList := make([]string, len(port.Values))
 		for i, p := range port.Values {
-			portList[i] = strconv.Itoa(p)
+			portList[i] = strconv.Itoa(int(p))
 		}
 		return []string{"-m", "multiport", flag, strings.Join(portList, ",")}
 	}
 
-	return []string{flag, strconv.Itoa(port.Values[0])}
+	return []string{flag, strconv.Itoa(int(port.Values[0]))}
 }

client/firewall/iptables/router_linux_test.go

@@ -239,7 +239,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			destination: netip.MustParsePrefix("10.0.0.0/24"),
 			proto:       firewall.ProtocolTCP,
 			sPort:       nil,
-			dPort:       &firewall.Port{Values: []int{80}},
+			dPort:       &firewall.Port{Values: []uint16{80}},
 			direction:   firewall.RuleDirectionIN,
 			action:      firewall.ActionAccept,
 			expectSet:   false,
@@ -252,7 +252,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			},
 			destination: netip.MustParsePrefix("10.0.0.0/8"),
 			proto:       firewall.ProtocolUDP,
-			sPort:       &firewall.Port{Values: []int{1024, 2048}, IsRange: true},
+			sPort:       &firewall.Port{Values: []uint16{1024, 2048}, IsRange: true},
 			dPort:       nil,
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionDrop,
@@ -285,7 +285,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			sources:     []netip.Prefix{netip.MustParsePrefix("172.16.0.0/12")},
 			destination: netip.MustParsePrefix("192.168.0.0/16"),
 			proto:       firewall.ProtocolTCP,
-			sPort:       &firewall.Port{Values: []int{80, 443, 8080}},
+			sPort:       &firewall.Port{Values: []uint16{80, 443, 8080}},
 			dPort:       nil,
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionAccept,
@@ -297,7 +297,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			destination: netip.MustParsePrefix("10.0.0.0/24"),
 			proto:       firewall.ProtocolUDP,
 			sPort:       nil,
-			dPort:       &firewall.Port{Values: []int{5000, 5100}, IsRange: true},
+			dPort:       &firewall.Port{Values: []uint16{5000, 5100}, IsRange: true},
 			direction:   firewall.RuleDirectionIN,
 			action:      firewall.ActionDrop,
 			expectSet:   false,
@@ -307,8 +307,8 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/24")},
 			destination: netip.MustParsePrefix("172.16.0.0/16"),
 			proto:       firewall.ProtocolTCP,
-			sPort:       &firewall.Port{Values: []int{1024, 65535}, IsRange: true},
-			dPort:       &firewall.Port{Values: []int{22}},
+			sPort:       &firewall.Port{Values: []uint16{1024, 65535}, IsRange: true},
+			dPort:       &firewall.Port{Values: []uint16{22}},
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionAccept,
 			expectSet:   false,

client/firewall/iptables/rule.go

@@ -5,9 +5,10 @@ type Rule struct {
 	ruleID    string
 	ipsetName string
 
-	specs []string
-	ip    string
-	chain string
+	specs       []string
+	mangleSpecs []string
+	ip          string
+	chain       string
 }
 
 // GetRuleID returns the rule id

client/firewall/iptables/rulestore_linux.go

@@ -37,6 +37,11 @@ func (s *ipList) UnmarshalJSON(data []byte) error {
 		return err
 	}
 	s.ips = temp.IPs
+
+	if temp.IPs == nil {
+		temp.IPs = make(map[string]struct{})
+	}
+
 	return nil
 }
 
@@ -89,5 +94,10 @@ func (s *ipsetStore) UnmarshalJSON(data []byte) error {
 		return err
 	}
 	s.ipsets = temp.IPSets
+
+	if temp.IPSets == nil {
+		temp.IPSets = make(map[string]*ipList)
+	}
+
 	return nil
 }

client/firewall/manager/firewall.go

@@ -69,7 +69,6 @@ type Manager interface {
 		proto Protocol,
 		sPort *Port,
 		dPort *Port,
-		direction RuleDirection,
 		action Action,
 		ipsetName string,
 		comment string,
@@ -100,6 +99,8 @@ type Manager interface {
 
 	// Flush the changes to firewall controller
 	Flush() error
+
+	SetLogLevel(log.Level)
 }
 
 func GenKey(format string, pair RouterPair) string {

client/firewall/manager/port.go

@@ -30,7 +30,7 @@ type Port struct {
 	IsRange bool
 
 	// Values contains one value for single port, multiple values for the list of ports, or two values for the range of ports
-	Values []int
+	Values []uint16
 }
 
 // String interface implementation
@@ -40,7 +40,11 @@ func (p *Port) String() string {
 		if ports != "" {
 			ports += ","
 		}
-		ports += strconv.Itoa(port)
+		ports += strconv.Itoa(int(port))
 	}
+	if p.IsRange {
+		ports = "range:" + ports
+	}
+
 	return ports
 }

client/firewall/nftables/acl_linux.go

@@ -2,10 +2,9 @@ package nftables
 
 import (
 	"bytes"
-	"encoding/binary"
 	"fmt"
 	"net"
-	"net/netip"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -23,12 +22,10 @@ import (
 const (
 
 	// rules chains contains the effective ACL rules
-	chainNameInputRules  = "netbird-acl-input-rules"
-	chainNameOutputRules = "netbird-acl-output-rules"
+	chainNameInputRules = "netbird-acl-input-rules"
 
 	// filter chains contains the rules that jump to the rules chains
 	chainNameInputFilter   = "netbird-acl-input-filter"
-	chainNameOutputFilter  = "netbird-acl-output-filter"
 	chainNameForwardFilter = "netbird-acl-forward-filter"
 	chainNamePrerouting    = "netbird-rt-prerouting"
 
@@ -47,9 +44,9 @@ type AclManager struct {
 	wgIface            iFaceMapper
 	routingFwChainName string
 
-	workTable        *nftables.Table
-	chainInputRules  *nftables.Chain
-	chainOutputRules *nftables.Chain
+	workTable       *nftables.Table
+	chainInputRules *nftables.Chain
+	chainPrerouting *nftables.Chain
 
 	ipsetStore *ipsetStore
 	rules      map[string]*Rule
@@ -91,7 +88,6 @@ func (m *AclManager) AddPeerFiltering(
 	proto firewall.Protocol,
 	sPort *firewall.Port,
 	dPort *firewall.Port,
-	direction firewall.RuleDirection,
 	action firewall.Action,
 	ipsetName string,
 	comment string,
@@ -106,7 +102,7 @@ func (m *AclManager) AddPeerFiltering(
 	}
 
 	newRules := make([]firewall.Rule, 0, 2)
-	ioRule, err := m.addIOFiltering(ip, proto, sPort, dPort, direction, action, ipset, comment)
+	ioRule, err := m.addIOFiltering(ip, proto, sPort, dPort, action, ipset, comment)
 	if err != nil {
 		return nil, err
 	}
@@ -123,23 +119,32 @@ func (m *AclManager) DeletePeerRule(rule firewall.Rule) error {
 	}
 
 	if r.nftSet == nil {
-		err := m.rConn.DelRule(r.nftRule)
-		if err != 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.GetRuleID())
 		return m.rConn.Flush()
 	}
 
 	ips, ok := m.ipsetStore.ips(r.nftSet.Name)
 	if !ok {
-		err := m.rConn.DelRule(r.nftRule)
-		if err != 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.GetRuleID())
 		return m.rConn.Flush()
 	}
+
 	if _, ok := ips[r.ip.String()]; ok {
 		err := m.sConn.SetDeleteElements(r.nftSet, []nftables.SetElement{{Key: r.ip.To4()}})
 		if err != nil {
@@ -158,12 +163,16 @@ func (m *AclManager) DeletePeerRule(rule firewall.Rule) error {
 		return nil
 	}
 
-	err := m.rConn.DelRule(r.nftRule)
-	if err != nil {
+	if err := m.rConn.DelRule(r.nftRule); err != nil {
 		log.Errorf("failed to delete rule: %v", err)
 	}
-	err = m.rConn.Flush()
-	if err != nil {
+	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
 	}
 
@@ -216,38 +225,6 @@ func (m *AclManager) createDefaultAllowRules() error {
 		Exprs:    expIn,
 	})
 
-	expOut := []expr.Any{
-		&expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			Len:          4,
-		},
-		// mask
-		&expr.Bitwise{
-			SourceRegister: 1,
-			DestRegister:   1,
-			Len:            4,
-			Mask:           []byte{0, 0, 0, 0},
-			Xor:            []byte{0, 0, 0, 0},
-		},
-		// net address
-		&expr.Cmp{
-			Register: 1,
-			Data:     []byte{0, 0, 0, 0},
-		},
-		&expr.Verdict{
-			Kind: expr.VerdictAccept,
-		},
-	}
-
-	_ = m.rConn.InsertRule(&nftables.Rule{
-		Table:    m.workTable,
-		Chain:    m.chainOutputRules,
-		Position: 0,
-		Exprs:    expOut,
-	})
-
 	if err := m.rConn.Flush(); err != nil {
 		return fmt.Errorf(flushError, err)
 	}
@@ -262,25 +239,33 @@ func (m *AclManager) Flush() error {
 		return err
 	}
 
-	if err := m.refreshRuleHandles(m.chainInputRules); err != nil {
+	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.chainOutputRules); err != nil {
-		log.Errorf("failed to refresh rule handles IPv4 output 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, direction firewall.RuleDirection, action firewall.Action, ipset *nftables.Set, comment string) (*Rule, error) {
-	ruleId := generatePeerRuleId(ip, sPort, dPort, direction, action, ipset)
+func (m *AclManager) addIOFiltering(
+	ip net.IP,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+	ipset *nftables.Set,
+	comment string,
+) (*Rule, error) {
+	ruleId := generatePeerRuleId(ip, sPort, dPort, action, ipset)
 	if r, ok := m.rules[ruleId]; ok {
 		return &Rule{
-			r.nftRule,
-			r.nftSet,
-			r.ruleID,
-			ip,
+			nftRule:    r.nftRule,
+			mangleRule: r.mangleRule,
+			nftSet:     r.nftSet,
+			ruleID:     r.ruleID,
+			ip:         ip,
 		}, nil
 	}
 
@@ -312,9 +297,6 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 	if !bytes.HasPrefix(anyIP, rawIP) {
 		// source address position
 		addrOffset := uint32(12)
-		if direction == firewall.RuleDirectionOUT {
-			addrOffset += 4 // is ipv4 address length
-		}
 
 		expressions = append(expressions,
 			&expr.Payload{
@@ -344,73 +326,100 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 		}
 	}
 
-	if sPort != nil && len(sPort.Values) != 0 {
-		expressions = append(expressions,
-			&expr.Payload{
-				DestRegister: 1,
-				Base:         expr.PayloadBaseTransportHeader,
-				Offset:       0,
-				Len:          2,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     encodePort(*sPort),
-			},
-		)
-	}
+	expressions = append(expressions, applyPort(sPort, true)...)
+	expressions = append(expressions, applyPort(dPort, false)...)
 
-	if dPort != nil && len(dPort.Values) != 0 {
-		expressions = append(expressions,
-			&expr.Payload{
-				DestRegister: 1,
-				Base:         expr.PayloadBaseTransportHeader,
-				Offset:       2,
-				Len:          2,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     encodePort(*dPort),
-			},
-		)
-	}
+	mainExpressions := slices.Clone(expressions)
 
 	switch action {
 	case firewall.ActionAccept:
-		expressions = append(expressions, &expr.Verdict{Kind: expr.VerdictAccept})
+		mainExpressions = append(mainExpressions, &expr.Verdict{Kind: expr.VerdictAccept})
 	case firewall.ActionDrop:
-		expressions = append(expressions, &expr.Verdict{Kind: expr.VerdictDrop})
+		mainExpressions = append(mainExpressions, &expr.Verdict{Kind: expr.VerdictDrop})
 	}
 
 	userData := []byte(strings.Join([]string{ruleId, comment}, " "))
 
-	var chain *nftables.Chain
-	if direction == firewall.RuleDirectionIN {
-		chain = m.chainInputRules
-	} else {
-		chain = m.chainOutputRules
-	}
+	chain := m.chainInputRules
 	nftRule := m.rConn.AddRule(&nftables.Rule{
 		Table:    m.workTable,
 		Chain:    chain,
-		Exprs:    expressions,
+		Exprs:    mainExpressions,
 		UserData: userData,
 	})
 
+	if err := m.rConn.Flush(); err != nil {
+		return nil, fmt.Errorf(flushError, err)
+	}
+
 	rule := &Rule{
-		nftRule: nftRule,
-		nftSet:  ipset,
-		ruleID:  ruleId,
-		ip:      ip,
+		nftRule:    nftRule,
+		mangleRule: m.createPreroutingRule(expressions, userData),
+		nftSet:     ipset,
+		ruleID:     ruleId,
+		ip:         ip,
 	}
 	m.rules[ruleId] = rule
 	if ipset != nil {
 		m.ipsetStore.AddReferenceToIpset(ipset.Name)
 	}
+
 	return rule, 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,
+		},
+	)
+
+	return m.rConn.AddRule(&nftables.Rule{
+		Table:    m.workTable,
+		Chain:    m.chainPrerouting,
+		Exprs:    preroutingExprs,
+		UserData: userData,
+	})
+}
+
 func (m *AclManager) createDefaultChains() (err error) {
 	// chainNameInputRules
 	chain := m.createChain(chainNameInputRules)
@@ -421,15 +430,6 @@ func (m *AclManager) createDefaultChains() (err error) {
 	}
 	m.chainInputRules = chain
 
-	// chainNameOutputRules
-	chain = m.createChain(chainNameOutputRules)
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", chainNameOutputRules, err)
-		return err
-	}
-	m.chainOutputRules = chain
-
 	// netbird-acl-input-filter
 	// type filter hook input priority filter; policy accept;
 	chain = m.createFilterChainWithHook(chainNameInputFilter, nftables.ChainHookInput)
@@ -441,18 +441,6 @@ func (m *AclManager) createDefaultChains() (err error) {
 		return err
 	}
 
-	// netbird-acl-output-filter
-	// type filter hook output priority filter; policy accept;
-	chain = m.createFilterChainWithHook(chainNameOutputFilter, nftables.ChainHookOutput)
-	m.addFwdAllow(chain, expr.MetaKeyOIFNAME)
-	m.addJumpRule(chain, m.chainOutputRules.Name, expr.MetaKeyOIFNAME) // to netbird-acl-output-rules
-	m.addDropExpressions(chain, expr.MetaKeyOIFNAME)
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", chainNameOutputFilter, err)
-		return err
-	}
-
 	// netbird-acl-forward-filter
 	chainFwFilter := m.createFilterChainWithHook(chainNameForwardFilter, nftables.ChainHookForward)
 	m.addJumpRulesToRtForward(chainFwFilter) // to netbird-rt-fwd
@@ -475,7 +463,7 @@ func (m *AclManager) createDefaultChains() (err error) {
 // 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 {
-	preroutingChain := m.rConn.AddChain(&nftables.Chain{
+	m.chainPrerouting = m.rConn.AddChain(&nftables.Chain{
 		Name:     chainNamePrerouting,
 		Table:    m.workTable,
 		Type:     nftables.ChainTypeFilter,
@@ -483,8 +471,6 @@ func (m *AclManager) allowRedirectedTraffic(chainFwFilter *nftables.Chain) error
 		Priority: nftables.ChainPriorityMangle,
 	})
 
-	m.addPreroutingRule(preroutingChain)
-
 	m.addFwmarkToForward(chainFwFilter)
 
 	if err := m.rConn.Flush(); err != nil {
@@ -494,43 +480,6 @@ func (m *AclManager) allowRedirectedTraffic(chainFwFilter *nftables.Chain) error
 	return nil
 }
 
-func (m *AclManager) addPreroutingRule(preroutingChain *nftables.Chain) {
-	m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: preroutingChain,
-		Exprs: []expr.Any{
-			&expr.Meta{
-				Key:      expr.MetaKeyIIFNAME,
-				Register: 1,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     ifname(m.wgIface.Name()),
-			},
-			&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,
-			},
-		},
-	})
-}
-
 func (m *AclManager) addFwmarkToForward(chainFwFilter *nftables.Chain) {
 	m.rConn.InsertRule(&nftables.Rule{
 		Table: m.workTable,
@@ -546,8 +495,7 @@ func (m *AclManager) addFwmarkToForward(chainFwFilter *nftables.Chain) {
 				Data:     binaryutil.NativeEndian.PutUint32(nbnet.PreroutingFwmarkRedirected),
 			},
 			&expr.Verdict{
-				Kind:  expr.VerdictJump,
-				Chain: m.chainInputRules.Name,
+				Kind: expr.VerdictAccept,
 			},
 		},
 	})
@@ -619,45 +567,6 @@ func (m *AclManager) addDropExpressions(chain *nftables.Chain, ifaceKey expr.Met
 	return nil
 }
 
-func (m *AclManager) addFwdAllow(chain *nftables.Chain, iifname expr.MetaKey) {
-	ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
-	dstOp := expr.CmpOpNeq
-	expressions := []expr.Any{
-		&expr.Meta{Key: iifname, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			Len:          4,
-		},
-		&expr.Bitwise{
-			SourceRegister: 2,
-			DestRegister:   2,
-			Len:            4,
-			Xor:            []byte{0x0, 0x0, 0x0, 0x0},
-			Mask:           m.wgIface.Address().Network.Mask,
-		},
-		&expr.Cmp{
-			Op:       dstOp,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
-		&expr.Verdict{
-			Kind: expr.VerdictAccept,
-		},
-	}
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: chain.Table,
-		Chain: chain,
-		Exprs: expressions,
-	})
-}
-
 func (m *AclManager) addJumpRule(chain *nftables.Chain, to string, ifaceKey expr.MetaKey) {
 	expressions := []expr.Any{
 		&expr.Meta{Key: ifaceKey, Register: 1},
@@ -733,6 +642,7 @@ func (m *AclManager) flushWithBackoff() (err error) {
 	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
 			}
@@ -749,7 +659,7 @@ func (m *AclManager) flushWithBackoff() (err error) {
 	return
 }
 
-func (m *AclManager) refreshRuleHandles(chain *nftables.Chain) error {
+func (m *AclManager) refreshRuleHandles(chain *nftables.Chain, mangle bool) error {
 	if m.workTable == nil || chain == nil {
 		return nil
 	}
@@ -766,22 +676,19 @@ func (m *AclManager) refreshRuleHandles(chain *nftables.Chain) error {
 		split := bytes.Split(rule.UserData, []byte(" "))
 		r, ok := m.rules[string(split[0])]
 		if ok {
-			*r.nftRule = *rule
+			if mangle {
+				*r.mangleRule = *rule
+			} else {
+				*r.nftRule = *rule
+			}
 		}
 	}
 
 	return nil
 }
 
-func generatePeerRuleId(
-	ip net.IP,
-	sPort *firewall.Port,
-	dPort *firewall.Port,
-	direction firewall.RuleDirection,
-	action firewall.Action,
-	ipset *nftables.Set,
-) string {
-	rulesetID := ":" + strconv.Itoa(int(direction)) + ":"
+func generatePeerRuleId(ip net.IP, sPort *firewall.Port, dPort *firewall.Port, action firewall.Action, ipset *nftables.Set) string {
+	rulesetID := ":"
 	if sPort != nil {
 		rulesetID += sPort.String()
 	}
@@ -797,12 +704,6 @@ func generatePeerRuleId(
 	return "set:" + ipset.Name + rulesetID
 }
 
-func encodePort(port firewall.Port) []byte {
-	bs := make([]byte, 2)
-	binary.BigEndian.PutUint16(bs, uint16(port.Values[0]))
-	return bs
-}
-
 func ifname(n string) []byte {
 	b := make([]byte, 16)
 	copy(b, n+"\x00")

client/firewall/nftables/manager_linux.go

@@ -117,7 +117,6 @@ func (m *Manager) AddPeerFiltering(
 	proto firewall.Protocol,
 	sPort *firewall.Port,
 	dPort *firewall.Port,
-	direction firewall.RuleDirection,
 	action firewall.Action,
 	ipsetName string,
 	comment string,
@@ -130,10 +129,17 @@ func (m *Manager) AddPeerFiltering(
 		return nil, fmt.Errorf("unsupported IP version: %s", ip.String())
 	}
 
-	return m.aclManager.AddPeerFiltering(ip, proto, sPort, dPort, direction, action, ipsetName, comment)
+	return m.aclManager.AddPeerFiltering(ip, proto, sPort, dPort, action, ipsetName, comment)
 }
 
-func (m *Manager) AddRouteFiltering(sources []netip.Prefix, destination netip.Prefix, proto firewall.Protocol, sPort *firewall.Port, dPort *firewall.Port, action firewall.Action) (firewall.Rule, error) {
+func (m *Manager) AddRouteFiltering(
+	sources []netip.Prefix,
+	destination netip.Prefix,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -312,6 +318,11 @@ func (m *Manager) cleanupNetbirdTables() error {
 	return nil
 }
 
+// SetLogLevel sets the log level for the firewall manager
+func (m *Manager) SetLogLevel(log.Level) {
+	// not supported
+}
+
 // Flush rule/chain/set operations from the buffer
 //
 // Method also get all rules after flush and refreshes handle values in the rulesets

client/firewall/nftables/manager_linux_test.go

@@ -1,9 +1,11 @@
 package nftables
 
 import (
+	"bytes"
 	"fmt"
 	"net"
 	"net/netip"
+	"os/exec"
 	"testing"
 	"time"
 
@@ -72,16 +74,7 @@ func TestNftablesManager(t *testing.T) {
 
 	testClient := &nftables.Conn{}
 
-	rule, err := manager.AddPeerFiltering(
-		ip,
-		fw.ProtocolTCP,
-		nil,
-		&fw.Port{Values: []int{53}},
-		fw.RuleDirectionIN,
-		fw.ActionDrop,
-		"",
-		"",
-	)
+	rule, err := manager.AddPeerFiltering(ip, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{53}}, fw.ActionDrop, "", "")
 	require.NoError(t, err, "failed to add rule")
 
 	err = manager.Flush()
@@ -114,7 +107,7 @@ func TestNftablesManager(t *testing.T) {
 			Kind: expr.VerdictAccept,
 		},
 	}
-	require.ElementsMatch(t, rules[0].Exprs, expectedExprs1, "expected the same expressions")
+	compareExprsIgnoringCounters(t, rules[0].Exprs, expectedExprs1)
 
 	ipToAdd, _ := netip.AddrFromSlice(ip)
 	add := ipToAdd.Unmap()
@@ -207,12 +200,8 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 			ip := net.ParseIP("10.20.0.100")
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
-				port := &fw.Port{Values: []int{1000 + i}}
-				if i%2 == 0 {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
-				} else {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
-				}
+				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
+				_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.ActionAccept, "", "accept HTTP traffic")
 				require.NoError(t, err, "failed to add rule")
 
 				if i%100 == 0 {
@@ -225,3 +214,111 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 		})
 	}
 }
+
+func runIptablesSave(t *testing.T) (string, string) {
+	t.Helper()
+	var stdout, stderr bytes.Buffer
+	cmd := exec.Command("iptables-save")
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	err := cmd.Run()
+	require.NoError(t, err, "iptables-save failed to run")
+
+	return stdout.String(), stderr.String()
+}
+
+func verifyIptablesOutput(t *testing.T, stdout, stderr string) {
+	t.Helper()
+	// Check for any incompatibility warnings
+	require.NotContains(t,
+		stderr,
+		"incompatible",
+		"iptables-save produced compatibility warning. Full stderr: %s",
+		stderr,
+	)
+
+	// Verify standard tables are present
+	expectedTables := []string{
+		"*filter",
+		"*nat",
+		"*mangle",
+	}
+
+	for _, table := range expectedTables {
+		require.Contains(t,
+			stdout,
+			table,
+			"iptables-save output missing expected table: %s\nFull stdout: %s",
+			table,
+			stdout,
+		)
+	}
+}
+
+func TestNftablesManagerCompatibilityWithIptables(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	if _, err := exec.LookPath("iptables-save"); err != nil {
+		t.Skipf("iptables-save not available on this system: %v", err)
+	}
+
+	// First ensure iptables-nft tables exist by running iptables-save
+	stdout, stderr := runIptablesSave(t)
+	verifyIptablesOutput(t, stdout, stderr)
+
+	manager, err := Create(ifaceMock)
+	require.NoError(t, err, "failed to create manager")
+	require.NoError(t, manager.Init(nil))
+
+	t.Cleanup(func() {
+		err := manager.Reset(nil)
+		require.NoError(t, err, "failed to reset manager state")
+
+		// Verify iptables output after reset
+		stdout, stderr := runIptablesSave(t)
+		verifyIptablesOutput(t, stdout, stderr)
+	})
+
+	ip := net.ParseIP("100.96.0.1")
+	_, err = manager.AddPeerFiltering(ip, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "", "test rule")
+	require.NoError(t, err, "failed to add peer filtering rule")
+
+	_, err = manager.AddRouteFiltering(
+		[]netip.Prefix{netip.MustParsePrefix("192.168.2.0/24")},
+		netip.MustParsePrefix("10.1.0.0/24"),
+		fw.ProtocolTCP,
+		nil,
+		&fw.Port{Values: []uint16{443}},
+		fw.ActionAccept,
+	)
+	require.NoError(t, err, "failed to add route filtering rule")
+
+	pair := fw.RouterPair{
+		Source:      netip.MustParsePrefix("192.168.1.0/24"),
+		Destination: netip.MustParsePrefix("10.0.0.0/24"),
+		Masquerade:  true,
+	}
+	err = manager.AddNatRule(pair)
+	require.NoError(t, err, "failed to add NAT rule")
+
+	stdout, stderr = runIptablesSave(t)
+	verifyIptablesOutput(t, stdout, stderr)
+}
+
+func compareExprsIgnoringCounters(t *testing.T, got, want []expr.Any) {
+	t.Helper()
+	require.Equal(t, len(got), len(want), "expression count mismatch")
+
+	for i := range got {
+		if _, isCounter := got[i].(*expr.Counter); isCounter {
+			_, wantIsCounter := want[i].(*expr.Counter)
+			require.True(t, wantIsCounter, "expected Counter at index %d", i)
+			continue
+		}
+
+		require.Equal(t, got[i], want[i], "expression mismatch at index %d", i)
+	}
+}

client/firewall/nftables/router_linux.go

@@ -233,7 +233,13 @@ func (r *router) AddRouteFiltering(
 		UserData: []byte(ruleKey),
 	}
 
-	rule = r.conn.AddRule(rule)
+	// Insert DROP rules at the beginning, append ACCEPT rules at the end
+	if action == firewall.ActionDrop {
+		// TODO: Insert after the established rule
+		rule = r.conn.InsertRule(rule)
+	} else {
+		rule = r.conn.AddRule(rule)
+	}
 
 	log.Tracef("Adding route rule %s", spew.Sdump(rule))
 	if err := r.conn.Flush(); err != nil {
@@ -956,12 +962,12 @@ func applyPort(port *firewall.Port, isSource bool) []expr.Any {
 			&expr.Cmp{
 				Op:       expr.CmpOpGte,
 				Register: 1,
-				Data:     binaryutil.BigEndian.PutUint16(uint16(port.Values[0])),
+				Data:     binaryutil.BigEndian.PutUint16(port.Values[0]),
 			},
 			&expr.Cmp{
 				Op:       expr.CmpOpLte,
 				Register: 1,
-				Data:     binaryutil.BigEndian.PutUint16(uint16(port.Values[1])),
+				Data:     binaryutil.BigEndian.PutUint16(port.Values[1]),
 			},
 		)
 	} else {
@@ -980,7 +986,7 @@ func applyPort(port *firewall.Port, isSource bool) []expr.Any {
 			exprs = append(exprs, &expr.Cmp{
 				Op:       expr.CmpOpEq,
 				Register: 1,
-				Data:     binaryutil.BigEndian.PutUint16(uint16(p)),
+				Data:     binaryutil.BigEndian.PutUint16(p),
 			})
 		}
 	}

client/firewall/nftables/router_linux_test.go

@@ -222,7 +222,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			destination: netip.MustParsePrefix("10.0.0.0/24"),
 			proto:       firewall.ProtocolTCP,
 			sPort:       nil,
-			dPort:       &firewall.Port{Values: []int{80}},
+			dPort:       &firewall.Port{Values: []uint16{80}},
 			direction:   firewall.RuleDirectionIN,
 			action:      firewall.ActionAccept,
 			expectSet:   false,
@@ -235,7 +235,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			},
 			destination: netip.MustParsePrefix("10.0.0.0/8"),
 			proto:       firewall.ProtocolUDP,
-			sPort:       &firewall.Port{Values: []int{1024, 2048}, IsRange: true},
+			sPort:       &firewall.Port{Values: []uint16{1024, 2048}, IsRange: true},
 			dPort:       nil,
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionDrop,
@@ -268,7 +268,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			sources:     []netip.Prefix{netip.MustParsePrefix("172.16.0.0/12")},
 			destination: netip.MustParsePrefix("192.168.0.0/16"),
 			proto:       firewall.ProtocolTCP,
-			sPort:       &firewall.Port{Values: []int{80, 443, 8080}},
+			sPort:       &firewall.Port{Values: []uint16{80, 443, 8080}},
 			dPort:       nil,
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionAccept,
@@ -280,7 +280,7 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			destination: netip.MustParsePrefix("10.0.0.0/24"),
 			proto:       firewall.ProtocolUDP,
 			sPort:       nil,
-			dPort:       &firewall.Port{Values: []int{5000, 5100}, IsRange: true},
+			dPort:       &firewall.Port{Values: []uint16{5000, 5100}, IsRange: true},
 			direction:   firewall.RuleDirectionIN,
 			action:      firewall.ActionDrop,
 			expectSet:   false,
@@ -290,8 +290,8 @@ func TestRouter_AddRouteFiltering(t *testing.T) {
 			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/24")},
 			destination: netip.MustParsePrefix("172.16.0.0/16"),
 			proto:       firewall.ProtocolTCP,
-			sPort:       &firewall.Port{Values: []int{1024, 65535}, IsRange: true},
-			dPort:       &firewall.Port{Values: []int{22}},
+			sPort:       &firewall.Port{Values: []uint16{1024, 65535}, IsRange: true},
+			dPort:       &firewall.Port{Values: []uint16{22}},
 			direction:   firewall.RuleDirectionOUT,
 			action:      firewall.ActionAccept,
 			expectSet:   false,

client/firewall/nftables/rule_linux.go

@@ -8,10 +8,11 @@ import (
 
 // Rule to handle management of rules
 type Rule struct {
-	nftRule *nftables.Rule
-	nftSet  *nftables.Set
-	ruleID  string
-	ip      net.IP
+	nftRule    *nftables.Rule
+	mangleRule *nftables.Rule
+	nftSet     *nftables.Set
+	ruleID     string
+	ip         net.IP
 }
 
 // GetRuleID returns the rule id

client/firewall/nftables/state.go

@@ -1 +0,0 @@
-package nftables

client/firewall/uspfilter/allow_netbird.go

@@ -2,7 +2,15 @@
 
 package uspfilter
 
-import "github.com/netbirdio/netbird/client/internal/statemanager"
+import (
+	"context"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/conntrack"
+	"github.com/netbirdio/netbird/client/internal/statemanager"
+)
 
 // Reset firewall to the default state
 func (m *Manager) Reset(stateManager *statemanager.Manager) error {
@@ -12,6 +20,33 @@ func (m *Manager) Reset(stateManager *statemanager.Manager) error {
 	m.outgoingRules = make(map[string]RuleSet)
 	m.incomingRules = make(map[string]RuleSet)
 
+	if m.udpTracker != nil {
+		m.udpTracker.Close()
+		m.udpTracker = conntrack.NewUDPTracker(conntrack.DefaultUDPTimeout, m.logger)
+	}
+
+	if m.icmpTracker != nil {
+		m.icmpTracker.Close()
+		m.icmpTracker = conntrack.NewICMPTracker(conntrack.DefaultICMPTimeout, m.logger)
+	}
+
+	if m.tcpTracker != nil {
+		m.tcpTracker.Close()
+		m.tcpTracker = conntrack.NewTCPTracker(conntrack.DefaultTCPTimeout, m.logger)
+	}
+
+	if m.forwarder != nil {
+		m.forwarder.Stop()
+	}
+
+	if m.logger != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+		if err := m.logger.Stop(ctx); err != nil {
+			log.Errorf("failed to shutdown logger: %v", err)
+		}
+	}
+
 	if m.nativeFirewall != nil {
 		return m.nativeFirewall.Reset(stateManager)
 	}

client/firewall/uspfilter/allow_netbird_windows.go

@@ -1,12 +1,15 @@
 package uspfilter
 
 import (
+	"context"
 	"fmt"
 	"os/exec"
 	"syscall"
+	"time"
 
 	log "github.com/sirupsen/logrus"
 
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/conntrack"
 	"github.com/netbirdio/netbird/client/internal/statemanager"
 )
 
@@ -26,6 +29,33 @@ func (m *Manager) Reset(*statemanager.Manager) error {
 	m.outgoingRules = make(map[string]RuleSet)
 	m.incomingRules = make(map[string]RuleSet)
 
+	if m.udpTracker != nil {
+		m.udpTracker.Close()
+		m.udpTracker = conntrack.NewUDPTracker(conntrack.DefaultUDPTimeout, m.logger)
+	}
+
+	if m.icmpTracker != nil {
+		m.icmpTracker.Close()
+		m.icmpTracker = conntrack.NewICMPTracker(conntrack.DefaultICMPTimeout, m.logger)
+	}
+
+	if m.tcpTracker != nil {
+		m.tcpTracker.Close()
+		m.tcpTracker = conntrack.NewTCPTracker(conntrack.DefaultTCPTimeout, m.logger)
+	}
+
+	if m.forwarder != nil {
+		m.forwarder.Stop()
+	}
+
+	if m.logger != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+		if err := m.logger.Stop(ctx); err != nil {
+			log.Errorf("failed to shutdown logger: %v", err)
+		}
+	}
+
 	if !isWindowsFirewallReachable() {
 		return nil
 	}

client/firewall/uspfilter/common/iface.go

@@ -0,0 +1,16 @@
+package common
+
+import (
+	wgdevice "golang.zx2c4.com/wireguard/device"
+
+	"github.com/netbirdio/netbird/client/iface"
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+// IFaceMapper defines subset methods of interface required for manager
+type IFaceMapper interface {
+	SetFilter(device.PacketFilter) error
+	Address() iface.WGAddress
+	GetWGDevice() *wgdevice.Device
+	GetDevice() *device.FilteredDevice
+}

client/firewall/uspfilter/conntrack/common.go

@@ -0,0 +1,126 @@
+// common.go
+package conntrack
+
+import (
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// BaseConnTrack provides common fields and locking for all connection types
+type BaseConnTrack struct {
+	SourceIP   net.IP
+	DestIP     net.IP
+	SourcePort uint16
+	DestPort   uint16
+	lastSeen   atomic.Int64 // Unix nano for atomic access
+}
+
+// these small methods will be inlined by the compiler
+
+// UpdateLastSeen safely updates the last seen timestamp
+func (b *BaseConnTrack) UpdateLastSeen() {
+	b.lastSeen.Store(time.Now().UnixNano())
+}
+
+// GetLastSeen safely gets the last seen timestamp
+func (b *BaseConnTrack) GetLastSeen() time.Time {
+	return time.Unix(0, b.lastSeen.Load())
+}
+
+// timeoutExceeded checks if the connection has exceeded the given timeout
+func (b *BaseConnTrack) timeoutExceeded(timeout time.Duration) bool {
+	lastSeen := time.Unix(0, b.lastSeen.Load())
+	return time.Since(lastSeen) > timeout
+}
+
+// IPAddr is a fixed-size IP address to avoid allocations
+type IPAddr [16]byte
+
+// MakeIPAddr creates an IPAddr from net.IP
+func MakeIPAddr(ip net.IP) (addr IPAddr) {
+	// Optimization: check for v4 first as it's more common
+	if ip4 := ip.To4(); ip4 != nil {
+		copy(addr[12:], ip4)
+	} else {
+		copy(addr[:], ip.To16())
+	}
+	return addr
+}
+
+// ConnKey uniquely identifies a connection
+type ConnKey struct {
+	SrcIP   IPAddr
+	DstIP   IPAddr
+	SrcPort uint16
+	DstPort uint16
+}
+
+// makeConnKey creates a connection key
+func makeConnKey(srcIP net.IP, dstIP net.IP, srcPort uint16, dstPort uint16) ConnKey {
+	return ConnKey{
+		SrcIP:   MakeIPAddr(srcIP),
+		DstIP:   MakeIPAddr(dstIP),
+		SrcPort: srcPort,
+		DstPort: dstPort,
+	}
+}
+
+// ValidateIPs checks if IPs match without allocation
+func ValidateIPs(connIP IPAddr, pktIP net.IP) bool {
+	if ip4 := pktIP.To4(); ip4 != nil {
+		// Compare IPv4 addresses (last 4 bytes)
+		for i := 0; i < 4; i++ {
+			if connIP[12+i] != ip4[i] {
+				return false
+			}
+		}
+		return true
+	}
+	// Compare full IPv6 addresses
+	ip6 := pktIP.To16()
+	for i := 0; i < 16; i++ {
+		if connIP[i] != ip6[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// PreallocatedIPs is a pool of IP byte slices to reduce allocations
+type PreallocatedIPs struct {
+	sync.Pool
+}
+
+// NewPreallocatedIPs creates a new IP pool
+func NewPreallocatedIPs() *PreallocatedIPs {
+	return &PreallocatedIPs{
+		Pool: sync.Pool{
+			New: func() interface{} {
+				ip := make(net.IP, 16)
+				return &ip
+			},
+		},
+	}
+}
+
+// Get retrieves an IP from the pool
+func (p *PreallocatedIPs) Get() net.IP {
+	return *p.Pool.Get().(*net.IP)
+}
+
+// Put returns an IP to the pool
+func (p *PreallocatedIPs) Put(ip net.IP) {
+	p.Pool.Put(&ip)
+}
+
+// copyIP copies an IP address efficiently
+func copyIP(dst, src net.IP) {
+	if len(src) == 16 {
+		copy(dst, src)
+	} else {
+		// Handle IPv4
+		copy(dst[12:], src.To4())
+	}
+}

client/firewall/uspfilter/conntrack/common_test.go

@@ -0,0 +1,95 @@
+package conntrack
+
+import (
+	"net"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+var logger = log.NewFromLogrus(logrus.StandardLogger())
+
+func BenchmarkIPOperations(b *testing.B) {
+	b.Run("MakeIPAddr", func(b *testing.B) {
+		ip := net.ParseIP("192.168.1.1")
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			_ = MakeIPAddr(ip)
+		}
+	})
+
+	b.Run("ValidateIPs", func(b *testing.B) {
+		ip1 := net.ParseIP("192.168.1.1")
+		ip2 := net.ParseIP("192.168.1.1")
+		addr := MakeIPAddr(ip1)
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			_ = ValidateIPs(addr, ip2)
+		}
+	})
+
+	b.Run("IPPool", func(b *testing.B) {
+		pool := NewPreallocatedIPs()
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			ip := pool.Get()
+			pool.Put(ip)
+		}
+	})
+
+}
+
+// Memory pressure tests
+func BenchmarkMemoryPressure(b *testing.B) {
+	b.Run("TCPHighLoad", func(b *testing.B) {
+		tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+		defer tracker.Close()
+
+		// Generate different IPs
+		srcIPs := make([]net.IP, 100)
+		dstIPs := make([]net.IP, 100)
+		for i := 0; i < 100; i++ {
+			srcIPs[i] = net.IPv4(192, 168, byte(i/256), byte(i%256))
+			dstIPs[i] = net.IPv4(10, 0, byte(i/256), byte(i%256))
+		}
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			srcIdx := i % len(srcIPs)
+			dstIdx := (i + 1) % len(dstIPs)
+			tracker.TrackOutbound(srcIPs[srcIdx], dstIPs[dstIdx], uint16(i%65535), 80, TCPSyn)
+
+			// Simulate some valid inbound packets
+			if i%3 == 0 {
+				tracker.IsValidInbound(dstIPs[dstIdx], srcIPs[srcIdx], 80, uint16(i%65535), TCPAck)
+			}
+		}
+	})
+
+	b.Run("UDPHighLoad", func(b *testing.B) {
+		tracker := NewUDPTracker(DefaultUDPTimeout, logger)
+		defer tracker.Close()
+
+		// Generate different IPs
+		srcIPs := make([]net.IP, 100)
+		dstIPs := make([]net.IP, 100)
+		for i := 0; i < 100; i++ {
+			srcIPs[i] = net.IPv4(192, 168, byte(i/256), byte(i%256))
+			dstIPs[i] = net.IPv4(10, 0, byte(i/256), byte(i%256))
+		}
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			srcIdx := i % len(srcIPs)
+			dstIdx := (i + 1) % len(dstIPs)
+			tracker.TrackOutbound(srcIPs[srcIdx], dstIPs[dstIdx], uint16(i%65535), 80)
+
+			// Simulate some valid inbound packets
+			if i%3 == 0 {
+				tracker.IsValidInbound(dstIPs[dstIdx], srcIPs[srcIdx], 80, uint16(i%65535))
+			}
+		}
+	})
+}

client/firewall/uspfilter/conntrack/icmp.go

@@ -0,0 +1,169 @@
+package conntrack
+
+import (
+	"net"
+	"sync"
+	"time"
+
+	"github.com/google/gopacket/layers"
+
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+const (
+	// DefaultICMPTimeout is the default timeout for ICMP connections
+	DefaultICMPTimeout = 30 * time.Second
+	// ICMPCleanupInterval is how often we check for stale ICMP connections
+	ICMPCleanupInterval = 15 * time.Second
+)
+
+// ICMPConnKey uniquely identifies an ICMP connection
+type ICMPConnKey struct {
+	// Supports both IPv4 and IPv6
+	SrcIP    [16]byte
+	DstIP    [16]byte
+	Sequence uint16 // ICMP sequence number
+	ID       uint16 // ICMP identifier
+}
+
+// ICMPConnTrack represents an ICMP connection state
+type ICMPConnTrack struct {
+	BaseConnTrack
+	Sequence uint16
+	ID       uint16
+}
+
+// ICMPTracker manages ICMP connection states
+type ICMPTracker struct {
+	logger        *nblog.Logger
+	connections   map[ICMPConnKey]*ICMPConnTrack
+	timeout       time.Duration
+	cleanupTicker *time.Ticker
+	mutex         sync.RWMutex
+	done          chan struct{}
+	ipPool        *PreallocatedIPs
+}
+
+// NewICMPTracker creates a new ICMP connection tracker
+func NewICMPTracker(timeout time.Duration, logger *nblog.Logger) *ICMPTracker {
+	if timeout == 0 {
+		timeout = DefaultICMPTimeout
+	}
+
+	tracker := &ICMPTracker{
+		logger:        logger,
+		connections:   make(map[ICMPConnKey]*ICMPConnTrack),
+		timeout:       timeout,
+		cleanupTicker: time.NewTicker(ICMPCleanupInterval),
+		done:          make(chan struct{}),
+		ipPool:        NewPreallocatedIPs(),
+	}
+
+	go tracker.cleanupRoutine()
+	return tracker
+}
+
+// TrackOutbound records an outbound ICMP Echo Request
+func (t *ICMPTracker) TrackOutbound(srcIP net.IP, dstIP net.IP, id uint16, seq uint16) {
+	key := makeICMPKey(srcIP, dstIP, id, seq)
+
+	t.mutex.Lock()
+	conn, exists := t.connections[key]
+	if !exists {
+		srcIPCopy := t.ipPool.Get()
+		dstIPCopy := t.ipPool.Get()
+		copyIP(srcIPCopy, srcIP)
+		copyIP(dstIPCopy, dstIP)
+
+		conn = &ICMPConnTrack{
+			BaseConnTrack: BaseConnTrack{
+				SourceIP: srcIPCopy,
+				DestIP:   dstIPCopy,
+			},
+			ID:       id,
+			Sequence: seq,
+		}
+		conn.UpdateLastSeen()
+		t.connections[key] = conn
+
+		t.logger.Trace("New ICMP connection %v", key)
+	}
+	t.mutex.Unlock()
+
+	conn.UpdateLastSeen()
+}
+
+// IsValidInbound checks if an inbound ICMP Echo Reply matches a tracked request
+func (t *ICMPTracker) IsValidInbound(srcIP net.IP, dstIP net.IP, id uint16, seq uint16, icmpType uint8) bool {
+	if icmpType != uint8(layers.ICMPv4TypeEchoReply) {
+		return false
+	}
+
+	key := makeICMPKey(dstIP, srcIP, id, seq)
+
+	t.mutex.RLock()
+	conn, exists := t.connections[key]
+	t.mutex.RUnlock()
+
+	if !exists {
+		return false
+	}
+
+	if conn.timeoutExceeded(t.timeout) {
+		return false
+	}
+
+	return ValidateIPs(MakeIPAddr(srcIP), conn.DestIP) &&
+		ValidateIPs(MakeIPAddr(dstIP), conn.SourceIP) &&
+		conn.ID == id &&
+		conn.Sequence == seq
+}
+
+func (t *ICMPTracker) cleanupRoutine() {
+	for {
+		select {
+		case <-t.cleanupTicker.C:
+			t.cleanup()
+		case <-t.done:
+			return
+		}
+	}
+}
+func (t *ICMPTracker) cleanup() {
+	t.mutex.Lock()
+	defer t.mutex.Unlock()
+
+	for key, conn := range t.connections {
+		if conn.timeoutExceeded(t.timeout) {
+			t.ipPool.Put(conn.SourceIP)
+			t.ipPool.Put(conn.DestIP)
+			delete(t.connections, key)
+
+			t.logger.Debug("Removed ICMP connection %v (timeout)", key)
+		}
+	}
+}
+
+// Close stops the cleanup routine and releases resources
+func (t *ICMPTracker) Close() {
+	t.cleanupTicker.Stop()
+	close(t.done)
+
+	t.mutex.Lock()
+	for _, conn := range t.connections {
+		t.ipPool.Put(conn.SourceIP)
+		t.ipPool.Put(conn.DestIP)
+	}
+	t.connections = nil
+	t.mutex.Unlock()
+}
+
+// makeICMPKey creates an ICMP connection key
+func makeICMPKey(srcIP net.IP, dstIP net.IP, id uint16, seq uint16) ICMPConnKey {
+	return ICMPConnKey{
+		SrcIP:    MakeIPAddr(srcIP),
+		DstIP:    MakeIPAddr(dstIP),
+		ID:       id,
+		Sequence: seq,
+	}
+}

client/firewall/uspfilter/conntrack/icmp_test.go

@@ -0,0 +1,39 @@
+package conntrack
+
+import (
+	"net"
+	"testing"
+)
+
+func BenchmarkICMPTracker(b *testing.B) {
+	b.Run("TrackOutbound", func(b *testing.B) {
+		tracker := NewICMPTracker(DefaultICMPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), uint16(i%65535))
+		}
+	})
+
+	b.Run("IsValidInbound", func(b *testing.B) {
+		tracker := NewICMPTracker(DefaultICMPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		// Pre-populate some connections
+		for i := 0; i < 1000; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i), uint16(i))
+		}
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.IsValidInbound(dstIP, srcIP, uint16(i%1000), uint16(i%1000), 0)
+		}
+	})
+}

client/firewall/uspfilter/conntrack/tcp.go

@@ -0,0 +1,383 @@
+package conntrack
+
+// TODO: Send RST packets for invalid/timed-out connections
+
+import (
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+const (
+	// MSL (Maximum Segment Lifetime) is typically 2 minutes
+	MSL = 2 * time.Minute
+	// TimeWaitTimeout (TIME-WAIT) should last 2*MSL
+	TimeWaitTimeout = 2 * MSL
+)
+
+const (
+	TCPSyn  uint8 = 0x02
+	TCPAck  uint8 = 0x10
+	TCPFin  uint8 = 0x01
+	TCPRst  uint8 = 0x04
+	TCPPush uint8 = 0x08
+	TCPUrg  uint8 = 0x20
+)
+
+const (
+	// DefaultTCPTimeout is the default timeout for established TCP connections
+	DefaultTCPTimeout = 3 * time.Hour
+	// TCPHandshakeTimeout is timeout for TCP handshake completion
+	TCPHandshakeTimeout = 60 * time.Second
+	// TCPCleanupInterval is how often we check for stale connections
+	TCPCleanupInterval = 5 * time.Minute
+)
+
+// TCPState represents the state of a TCP connection
+type TCPState int
+
+const (
+	TCPStateNew TCPState = iota
+	TCPStateSynSent
+	TCPStateSynReceived
+	TCPStateEstablished
+	TCPStateFinWait1
+	TCPStateFinWait2
+	TCPStateClosing
+	TCPStateTimeWait
+	TCPStateCloseWait
+	TCPStateLastAck
+	TCPStateClosed
+)
+
+// TCPConnKey uniquely identifies a TCP connection
+type TCPConnKey struct {
+	SrcIP   [16]byte
+	DstIP   [16]byte
+	SrcPort uint16
+	DstPort uint16
+}
+
+// TCPConnTrack represents a TCP connection state
+type TCPConnTrack struct {
+	BaseConnTrack
+	State       TCPState
+	established atomic.Bool
+	sync.RWMutex
+}
+
+// IsEstablished safely checks if connection is established
+func (t *TCPConnTrack) IsEstablished() bool {
+	return t.established.Load()
+}
+
+// SetEstablished safely sets the established state
+func (t *TCPConnTrack) SetEstablished(state bool) {
+	t.established.Store(state)
+}
+
+// TCPTracker manages TCP connection states
+type TCPTracker struct {
+	logger        *nblog.Logger
+	connections   map[ConnKey]*TCPConnTrack
+	mutex         sync.RWMutex
+	cleanupTicker *time.Ticker
+	done          chan struct{}
+	timeout       time.Duration
+	ipPool        *PreallocatedIPs
+}
+
+// NewTCPTracker creates a new TCP connection tracker
+func NewTCPTracker(timeout time.Duration, logger *nblog.Logger) *TCPTracker {
+	tracker := &TCPTracker{
+		logger:        logger,
+		connections:   make(map[ConnKey]*TCPConnTrack),
+		cleanupTicker: time.NewTicker(TCPCleanupInterval),
+		done:          make(chan struct{}),
+		timeout:       timeout,
+		ipPool:        NewPreallocatedIPs(),
+	}
+
+	go tracker.cleanupRoutine()
+	return tracker
+}
+
+// TrackOutbound processes an outbound TCP packet and updates connection state
+func (t *TCPTracker) TrackOutbound(srcIP net.IP, dstIP net.IP, srcPort uint16, dstPort uint16, flags uint8) {
+	// Create key before lock
+	key := makeConnKey(srcIP, dstIP, srcPort, dstPort)
+
+	t.mutex.Lock()
+	conn, exists := t.connections[key]
+	if !exists {
+		// Use preallocated IPs
+		srcIPCopy := t.ipPool.Get()
+		dstIPCopy := t.ipPool.Get()
+		copyIP(srcIPCopy, srcIP)
+		copyIP(dstIPCopy, dstIP)
+
+		conn = &TCPConnTrack{
+			BaseConnTrack: BaseConnTrack{
+				SourceIP:   srcIPCopy,
+				DestIP:     dstIPCopy,
+				SourcePort: srcPort,
+				DestPort:   dstPort,
+			},
+			State: TCPStateNew,
+		}
+		conn.UpdateLastSeen()
+		conn.established.Store(false)
+		t.connections[key] = conn
+
+		t.logger.Trace("New TCP connection: %s:%d -> %s:%d", srcIP, srcPort, dstIP, dstPort)
+	}
+	t.mutex.Unlock()
+
+	// Lock individual connection for state update
+	conn.Lock()
+	t.updateState(conn, flags, true)
+	conn.Unlock()
+	conn.UpdateLastSeen()
+}
+
+// IsValidInbound checks if an inbound TCP packet matches a tracked connection
+func (t *TCPTracker) IsValidInbound(srcIP net.IP, dstIP net.IP, srcPort uint16, dstPort uint16, flags uint8) bool {
+	if !isValidFlagCombination(flags) {
+		return false
+	}
+
+	key := makeConnKey(dstIP, srcIP, dstPort, srcPort)
+
+	t.mutex.RLock()
+	conn, exists := t.connections[key]
+	t.mutex.RUnlock()
+
+	if !exists {
+		return false
+	}
+
+	// Handle RST packets
+	if flags&TCPRst != 0 {
+		conn.Lock()
+		if conn.IsEstablished() || conn.State == TCPStateSynSent || conn.State == TCPStateSynReceived {
+			conn.State = TCPStateClosed
+			conn.SetEstablished(false)
+			conn.Unlock()
+			return true
+		}
+		conn.Unlock()
+		return false
+	}
+
+	conn.Lock()
+	t.updateState(conn, flags, false)
+	conn.UpdateLastSeen()
+	isEstablished := conn.IsEstablished()
+	isValidState := t.isValidStateForFlags(conn.State, flags)
+	conn.Unlock()
+
+	return isEstablished || isValidState
+}
+
+// updateState updates the TCP connection state based on flags
+func (t *TCPTracker) updateState(conn *TCPConnTrack, flags uint8, isOutbound bool) {
+	// Handle RST flag specially - it always causes transition to closed
+	if flags&TCPRst != 0 {
+		conn.State = TCPStateClosed
+		conn.SetEstablished(false)
+
+		t.logger.Trace("TCP connection reset: %s:%d -> %s:%d",
+			conn.SourceIP, conn.SourcePort, conn.DestIP, conn.DestPort)
+		return
+	}
+
+	switch conn.State {
+	case TCPStateNew:
+		if flags&TCPSyn != 0 && flags&TCPAck == 0 {
+			conn.State = TCPStateSynSent
+		}
+
+	case TCPStateSynSent:
+		if flags&TCPSyn != 0 && flags&TCPAck != 0 {
+			if isOutbound {
+				conn.State = TCPStateSynReceived
+			} else {
+				// Simultaneous open
+				conn.State = TCPStateEstablished
+				conn.SetEstablished(true)
+			}
+		}
+
+	case TCPStateSynReceived:
+		if flags&TCPAck != 0 && flags&TCPSyn == 0 {
+			conn.State = TCPStateEstablished
+			conn.SetEstablished(true)
+		}
+
+	case TCPStateEstablished:
+		if flags&TCPFin != 0 {
+			if isOutbound {
+				conn.State = TCPStateFinWait1
+			} else {
+				conn.State = TCPStateCloseWait
+			}
+			conn.SetEstablished(false)
+		}
+
+	case TCPStateFinWait1:
+		switch {
+		case flags&TCPFin != 0 && flags&TCPAck != 0:
+			// Simultaneous close - both sides sent FIN
+			conn.State = TCPStateClosing
+		case flags&TCPFin != 0:
+			conn.State = TCPStateFinWait2
+		case flags&TCPAck != 0:
+			conn.State = TCPStateFinWait2
+		}
+
+	case TCPStateFinWait2:
+		if flags&TCPFin != 0 {
+			conn.State = TCPStateTimeWait
+		}
+
+	case TCPStateClosing:
+		if flags&TCPAck != 0 {
+			conn.State = TCPStateTimeWait
+			// Keep established = false from previous state
+
+			t.logger.Trace("TCP connection closed (simultaneous) - %s:%d -> %s:%d",
+				conn.SourceIP, conn.SourcePort, conn.DestIP, conn.DestPort)
+		}
+
+	case TCPStateCloseWait:
+		if flags&TCPFin != 0 {
+			conn.State = TCPStateLastAck
+		}
+
+	case TCPStateLastAck:
+		if flags&TCPAck != 0 {
+			conn.State = TCPStateClosed
+
+			t.logger.Trace("TCP connection gracefully closed: %s:%d -> %s:%d",
+				conn.SourceIP, conn.SourcePort, conn.DestIP, conn.DestPort)
+		}
+
+	case TCPStateTimeWait:
+		// Stay in TIME-WAIT for 2MSL before transitioning to closed
+		// This is handled by the cleanup routine
+
+		t.logger.Trace("TCP connection completed - %s:%d -> %s:%d",
+			conn.SourceIP, conn.SourcePort, conn.DestIP, conn.DestPort)
+	}
+}
+
+// isValidStateForFlags checks if the TCP flags are valid for the current connection state
+func (t *TCPTracker) isValidStateForFlags(state TCPState, flags uint8) bool {
+	if !isValidFlagCombination(flags) {
+		return false
+	}
+
+	switch state {
+	case TCPStateNew:
+		return flags&TCPSyn != 0 && flags&TCPAck == 0
+	case TCPStateSynSent:
+		return flags&TCPSyn != 0 && flags&TCPAck != 0
+	case TCPStateSynReceived:
+		return flags&TCPAck != 0
+	case TCPStateEstablished:
+		if flags&TCPRst != 0 {
+			return true
+		}
+		return flags&TCPAck != 0
+	case TCPStateFinWait1:
+		return flags&TCPFin != 0 || flags&TCPAck != 0
+	case TCPStateFinWait2:
+		return flags&TCPFin != 0 || flags&TCPAck != 0
+	case TCPStateClosing:
+		// In CLOSING state, we should accept the final ACK
+		return flags&TCPAck != 0
+	case TCPStateTimeWait:
+		// In TIME_WAIT, we might see retransmissions
+		return flags&TCPAck != 0
+	case TCPStateCloseWait:
+		return flags&TCPFin != 0 || flags&TCPAck != 0
+	case TCPStateLastAck:
+		return flags&TCPAck != 0
+	case TCPStateClosed:
+		// Accept retransmitted ACKs in closed state
+		// This is important because the final ACK might be lost
+		// and the peer will retransmit their FIN-ACK
+		return flags&TCPAck != 0
+	}
+	return false
+}
+
+func (t *TCPTracker) cleanupRoutine() {
+	for {
+		select {
+		case <-t.cleanupTicker.C:
+			t.cleanup()
+		case <-t.done:
+			return
+		}
+	}
+}
+
+func (t *TCPTracker) cleanup() {
+	t.mutex.Lock()
+	defer t.mutex.Unlock()
+
+	for key, conn := range t.connections {
+		var timeout time.Duration
+		switch {
+		case conn.State == TCPStateTimeWait:
+			timeout = TimeWaitTimeout
+		case conn.IsEstablished():
+			timeout = t.timeout
+		default:
+			timeout = TCPHandshakeTimeout
+		}
+
+		lastSeen := conn.GetLastSeen()
+		if time.Since(lastSeen) > timeout {
+			// Return IPs to pool
+			t.ipPool.Put(conn.SourceIP)
+			t.ipPool.Put(conn.DestIP)
+			delete(t.connections, key)
+
+			t.logger.Trace("Cleaned up TCP connection: %s:%d -> %s:%d", conn.SourceIP, conn.SourcePort, conn.DestIP, conn.DestPort)
+		}
+	}
+}
+
+// Close stops the cleanup routine and releases resources
+func (t *TCPTracker) Close() {
+	t.cleanupTicker.Stop()
+	close(t.done)
+
+	// Clean up all remaining IPs
+	t.mutex.Lock()
+	for _, conn := range t.connections {
+		t.ipPool.Put(conn.SourceIP)
+		t.ipPool.Put(conn.DestIP)
+	}
+	t.connections = nil
+	t.mutex.Unlock()
+}
+
+func isValidFlagCombination(flags uint8) bool {
+	// Invalid: SYN+FIN
+	if flags&TCPSyn != 0 && flags&TCPFin != 0 {
+		return false
+	}
+
+	// Invalid: RST with SYN or FIN
+	if flags&TCPRst != 0 && (flags&TCPSyn != 0 || flags&TCPFin != 0) {
+		return false
+	}
+
+	return true
+}

client/firewall/uspfilter/conntrack/tcp_test.go

@@ -0,0 +1,308 @@
+package conntrack
+
+import (
+	"net"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestTCPStateMachine(t *testing.T) {
+	tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+	defer tracker.Close()
+
+	srcIP := net.ParseIP("100.64.0.1")
+	dstIP := net.ParseIP("100.64.0.2")
+	srcPort := uint16(12345)
+	dstPort := uint16(80)
+
+	t.Run("Security Tests", func(t *testing.T) {
+		tests := []struct {
+			name     string
+			flags    uint8
+			wantDrop bool
+			desc     string
+		}{
+			{
+				name:     "Block unsolicited SYN-ACK",
+				flags:    TCPSyn | TCPAck,
+				wantDrop: true,
+				desc:     "Should block SYN-ACK without prior SYN",
+			},
+			{
+				name:     "Block invalid SYN-FIN",
+				flags:    TCPSyn | TCPFin,
+				wantDrop: true,
+				desc:     "Should block invalid SYN-FIN combination",
+			},
+			{
+				name:     "Block unsolicited RST",
+				flags:    TCPRst,
+				wantDrop: true,
+				desc:     "Should block RST without connection",
+			},
+			{
+				name:     "Block unsolicited ACK",
+				flags:    TCPAck,
+				wantDrop: true,
+				desc:     "Should block ACK without connection",
+			},
+			{
+				name:     "Block data without connection",
+				flags:    TCPAck | TCPPush,
+				wantDrop: true,
+				desc:     "Should block data without established connection",
+			},
+		}
+
+		for _, tt := range tests {
+			t.Run(tt.name, func(t *testing.T) {
+				isValid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, tt.flags)
+				require.Equal(t, !tt.wantDrop, isValid, tt.desc)
+			})
+		}
+	})
+
+	t.Run("Connection Flow Tests", func(t *testing.T) {
+		tests := []struct {
+			name string
+			test func(*testing.T)
+			desc string
+		}{
+			{
+				name: "Normal Handshake",
+				test: func(t *testing.T) {
+					t.Helper()
+
+					// Send initial SYN
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPSyn)
+
+					// Receive SYN-ACK
+					valid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPSyn|TCPAck)
+					require.True(t, valid, "SYN-ACK should be allowed")
+
+					// Send ACK
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPAck)
+
+					// Test data transfer
+					valid = tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPPush|TCPAck)
+					require.True(t, valid, "Data should be allowed after handshake")
+				},
+			},
+			{
+				name: "Normal Close",
+				test: func(t *testing.T) {
+					t.Helper()
+
+					// First establish connection
+					establishConnection(t, tracker, srcIP, dstIP, srcPort, dstPort)
+
+					// Send FIN
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPFin|TCPAck)
+
+					// Receive ACK for FIN
+					valid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPAck)
+					require.True(t, valid, "ACK for FIN should be allowed")
+
+					// Receive FIN from other side
+					valid = tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPFin|TCPAck)
+					require.True(t, valid, "FIN should be allowed")
+
+					// Send final ACK
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPAck)
+				},
+			},
+			{
+				name: "RST During Connection",
+				test: func(t *testing.T) {
+					t.Helper()
+
+					// First establish connection
+					establishConnection(t, tracker, srcIP, dstIP, srcPort, dstPort)
+
+					// Receive RST
+					valid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPRst)
+					require.True(t, valid, "RST should be allowed for established connection")
+
+					// Connection is logically dead but we don't enforce blocking subsequent packets
+					// The connection will be cleaned up by timeout
+				},
+			},
+			{
+				name: "Simultaneous Close",
+				test: func(t *testing.T) {
+					t.Helper()
+
+					// First establish connection
+					establishConnection(t, tracker, srcIP, dstIP, srcPort, dstPort)
+
+					// Both sides send FIN+ACK
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPFin|TCPAck)
+					valid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPFin|TCPAck)
+					require.True(t, valid, "Simultaneous FIN should be allowed")
+
+					// Both sides send final ACK
+					tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPAck)
+					valid = tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPAck)
+					require.True(t, valid, "Final ACKs should be allowed")
+				},
+			},
+		}
+
+		for _, tt := range tests {
+			t.Run(tt.name, func(t *testing.T) {
+				t.Helper()
+
+				tracker = NewTCPTracker(DefaultTCPTimeout, logger)
+				tt.test(t)
+			})
+		}
+	})
+}
+
+func TestRSTHandling(t *testing.T) {
+	tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+	defer tracker.Close()
+
+	srcIP := net.ParseIP("100.64.0.1")
+	dstIP := net.ParseIP("100.64.0.2")
+	srcPort := uint16(12345)
+	dstPort := uint16(80)
+
+	tests := []struct {
+		name       string
+		setupState func()
+		sendRST    func()
+		wantValid  bool
+		desc       string
+	}{
+		{
+			name: "RST in established",
+			setupState: func() {
+				// Establish connection first
+				tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPSyn)
+				tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPSyn|TCPAck)
+				tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPAck)
+			},
+			sendRST: func() {
+				tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPRst)
+			},
+			wantValid: true,
+			desc:      "Should accept RST for established connection",
+		},
+		{
+			name:       "RST without connection",
+			setupState: func() {},
+			sendRST: func() {
+				tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPRst)
+			},
+			wantValid: false,
+			desc:      "Should reject RST without connection",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.setupState()
+			tt.sendRST()
+
+			// Verify connection state is as expected
+			key := makeConnKey(srcIP, dstIP, srcPort, dstPort)
+			conn := tracker.connections[key]
+			if tt.wantValid {
+				require.NotNil(t, conn)
+				require.Equal(t, TCPStateClosed, conn.State)
+				require.False(t, conn.IsEstablished())
+			}
+		})
+	}
+}
+
+// Helper to establish a TCP connection
+func establishConnection(t *testing.T, tracker *TCPTracker, srcIP, dstIP net.IP, srcPort, dstPort uint16) {
+	t.Helper()
+
+	tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPSyn)
+
+	valid := tracker.IsValidInbound(dstIP, srcIP, dstPort, srcPort, TCPSyn|TCPAck)
+	require.True(t, valid, "SYN-ACK should be allowed")
+
+	tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort, TCPAck)
+}
+
+func BenchmarkTCPTracker(b *testing.B) {
+	b.Run("TrackOutbound", func(b *testing.B) {
+		tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), 80, TCPSyn)
+		}
+	})
+
+	b.Run("IsValidInbound", func(b *testing.B) {
+		tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		// Pre-populate some connections
+		for i := 0; i < 1000; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i), 80, TCPSyn)
+		}
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.IsValidInbound(dstIP, srcIP, 80, uint16(i%1000), TCPAck)
+		}
+	})
+
+	b.Run("ConcurrentAccess", func(b *testing.B) {
+		tracker := NewTCPTracker(DefaultTCPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				if i%2 == 0 {
+					tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), 80, TCPSyn)
+				} else {
+					tracker.IsValidInbound(dstIP, srcIP, 80, uint16(i%65535), TCPAck)
+				}
+				i++
+			}
+		})
+	})
+}
+
+// Benchmark connection cleanup
+func BenchmarkCleanup(b *testing.B) {
+	b.Run("TCPCleanup", func(b *testing.B) {
+		tracker := NewTCPTracker(100*time.Millisecond, logger) // Short timeout for testing
+		defer tracker.Close()
+
+		// Pre-populate with expired connections
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+		for i := 0; i < 10000; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i), 80, TCPSyn)
+		}
+
+		// Wait for connections to expire
+		time.Sleep(200 * time.Millisecond)
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.cleanup()
+		}
+	})
+}

client/firewall/uspfilter/conntrack/udp.go

@@ -0,0 +1,163 @@
+package conntrack
+
+import (
+	"net"
+	"sync"
+	"time"
+
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+const (
+	// DefaultUDPTimeout is the default timeout for UDP connections
+	DefaultUDPTimeout = 30 * time.Second
+	// UDPCleanupInterval is how often we check for stale connections
+	UDPCleanupInterval = 15 * time.Second
+)
+
+// UDPConnTrack represents a UDP connection state
+type UDPConnTrack struct {
+	BaseConnTrack
+}
+
+// UDPTracker manages UDP connection states
+type UDPTracker struct {
+	logger        *nblog.Logger
+	connections   map[ConnKey]*UDPConnTrack
+	timeout       time.Duration
+	cleanupTicker *time.Ticker
+	mutex         sync.RWMutex
+	done          chan struct{}
+	ipPool        *PreallocatedIPs
+}
+
+// NewUDPTracker creates a new UDP connection tracker
+func NewUDPTracker(timeout time.Duration, logger *nblog.Logger) *UDPTracker {
+	if timeout == 0 {
+		timeout = DefaultUDPTimeout
+	}
+
+	tracker := &UDPTracker{
+		logger:        logger,
+		connections:   make(map[ConnKey]*UDPConnTrack),
+		timeout:       timeout,
+		cleanupTicker: time.NewTicker(UDPCleanupInterval),
+		done:          make(chan struct{}),
+		ipPool:        NewPreallocatedIPs(),
+	}
+
+	go tracker.cleanupRoutine()
+	return tracker
+}
+
+// TrackOutbound records an outbound UDP connection
+func (t *UDPTracker) TrackOutbound(srcIP net.IP, dstIP net.IP, srcPort uint16, dstPort uint16) {
+	key := makeConnKey(srcIP, dstIP, srcPort, dstPort)
+
+	t.mutex.Lock()
+	conn, exists := t.connections[key]
+	if !exists {
+		srcIPCopy := t.ipPool.Get()
+		dstIPCopy := t.ipPool.Get()
+		copyIP(srcIPCopy, srcIP)
+		copyIP(dstIPCopy, dstIP)
+
+		conn = &UDPConnTrack{
+			BaseConnTrack: BaseConnTrack{
+				SourceIP:   srcIPCopy,
+				DestIP:     dstIPCopy,
+				SourcePort: srcPort,
+				DestPort:   dstPort,
+			},
+		}
+		conn.UpdateLastSeen()
+		t.connections[key] = conn
+
+		t.logger.Trace("New UDP connection: %v", conn)
+	}
+	t.mutex.Unlock()
+
+	conn.UpdateLastSeen()
+}
+
+// IsValidInbound checks if an inbound packet matches a tracked connection
+func (t *UDPTracker) IsValidInbound(srcIP net.IP, dstIP net.IP, srcPort uint16, dstPort uint16) bool {
+	key := makeConnKey(dstIP, srcIP, dstPort, srcPort)
+
+	t.mutex.RLock()
+	conn, exists := t.connections[key]
+	t.mutex.RUnlock()
+
+	if !exists {
+		return false
+	}
+
+	if conn.timeoutExceeded(t.timeout) {
+		return false
+	}
+
+	return ValidateIPs(MakeIPAddr(srcIP), conn.DestIP) &&
+		ValidateIPs(MakeIPAddr(dstIP), conn.SourceIP) &&
+		conn.DestPort == srcPort &&
+		conn.SourcePort == dstPort
+}
+
+// cleanupRoutine periodically removes stale connections
+func (t *UDPTracker) cleanupRoutine() {
+	for {
+		select {
+		case <-t.cleanupTicker.C:
+			t.cleanup()
+		case <-t.done:
+			return
+		}
+	}
+}
+
+func (t *UDPTracker) cleanup() {
+	t.mutex.Lock()
+	defer t.mutex.Unlock()
+
+	for key, conn := range t.connections {
+		if conn.timeoutExceeded(t.timeout) {
+			t.ipPool.Put(conn.SourceIP)
+			t.ipPool.Put(conn.DestIP)
+			delete(t.connections, key)
+
+			t.logger.Trace("Removed UDP connection %v (timeout)", conn)
+		}
+	}
+}
+
+// Close stops the cleanup routine and releases resources
+func (t *UDPTracker) Close() {
+	t.cleanupTicker.Stop()
+	close(t.done)
+
+	t.mutex.Lock()
+	for _, conn := range t.connections {
+		t.ipPool.Put(conn.SourceIP)
+		t.ipPool.Put(conn.DestIP)
+	}
+	t.connections = nil
+	t.mutex.Unlock()
+}
+
+// GetConnection safely retrieves a connection state
+func (t *UDPTracker) GetConnection(srcIP net.IP, srcPort uint16, dstIP net.IP, dstPort uint16) (*UDPConnTrack, bool) {
+	t.mutex.RLock()
+	defer t.mutex.RUnlock()
+
+	key := makeConnKey(srcIP, dstIP, srcPort, dstPort)
+	conn, exists := t.connections[key]
+	if !exists {
+		return nil, false
+	}
+
+	return conn, true
+}
+
+// Timeout returns the configured timeout duration for the tracker
+func (t *UDPTracker) Timeout() time.Duration {
+	return t.timeout
+}

client/firewall/uspfilter/conntrack/udp_test.go

@@ -0,0 +1,243 @@
+package conntrack
+
+import (
+	"net"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewUDPTracker(t *testing.T) {
+	tests := []struct {
+		name        string
+		timeout     time.Duration
+		wantTimeout time.Duration
+	}{
+		{
+			name:        "with custom timeout",
+			timeout:     1 * time.Minute,
+			wantTimeout: 1 * time.Minute,
+		},
+		{
+			name:        "with zero timeout uses default",
+			timeout:     0,
+			wantTimeout: DefaultUDPTimeout,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tracker := NewUDPTracker(tt.timeout, logger)
+			assert.NotNil(t, tracker)
+			assert.Equal(t, tt.wantTimeout, tracker.timeout)
+			assert.NotNil(t, tracker.connections)
+			assert.NotNil(t, tracker.cleanupTicker)
+			assert.NotNil(t, tracker.done)
+		})
+	}
+}
+
+func TestUDPTracker_TrackOutbound(t *testing.T) {
+	tracker := NewUDPTracker(DefaultUDPTimeout, logger)
+	defer tracker.Close()
+
+	srcIP := net.ParseIP("192.168.1.2")
+	dstIP := net.ParseIP("192.168.1.3")
+	srcPort := uint16(12345)
+	dstPort := uint16(53)
+
+	tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort)
+
+	// Verify connection was tracked
+	key := makeConnKey(srcIP, dstIP, srcPort, dstPort)
+	conn, exists := tracker.connections[key]
+	require.True(t, exists)
+	assert.True(t, conn.SourceIP.Equal(srcIP))
+	assert.True(t, conn.DestIP.Equal(dstIP))
+	assert.Equal(t, srcPort, conn.SourcePort)
+	assert.Equal(t, dstPort, conn.DestPort)
+	assert.WithinDuration(t, time.Now(), conn.GetLastSeen(), 1*time.Second)
+}
+
+func TestUDPTracker_IsValidInbound(t *testing.T) {
+	tracker := NewUDPTracker(1*time.Second, logger)
+	defer tracker.Close()
+
+	srcIP := net.ParseIP("192.168.1.2")
+	dstIP := net.ParseIP("192.168.1.3")
+	srcPort := uint16(12345)
+	dstPort := uint16(53)
+
+	// Track outbound connection
+	tracker.TrackOutbound(srcIP, dstIP, srcPort, dstPort)
+
+	tests := []struct {
+		name    string
+		srcIP   net.IP
+		dstIP   net.IP
+		srcPort uint16
+		dstPort uint16
+		sleep   time.Duration
+		want    bool
+	}{
+		{
+			name:    "valid inbound response",
+			srcIP:   dstIP,   // Original destination is now source
+			dstIP:   srcIP,   // Original source is now destination
+			srcPort: dstPort, // Original destination port is now source
+			dstPort: srcPort, // Original source port is now destination
+			sleep:   0,
+			want:    true,
+		},
+		{
+			name:    "invalid source IP",
+			srcIP:   net.ParseIP("192.168.1.4"),
+			dstIP:   srcIP,
+			srcPort: dstPort,
+			dstPort: srcPort,
+			sleep:   0,
+			want:    false,
+		},
+		{
+			name:    "invalid destination IP",
+			srcIP:   dstIP,
+			dstIP:   net.ParseIP("192.168.1.4"),
+			srcPort: dstPort,
+			dstPort: srcPort,
+			sleep:   0,
+			want:    false,
+		},
+		{
+			name:    "invalid source port",
+			srcIP:   dstIP,
+			dstIP:   srcIP,
+			srcPort: 54321,
+			dstPort: srcPort,
+			sleep:   0,
+			want:    false,
+		},
+		{
+			name:    "invalid destination port",
+			srcIP:   dstIP,
+			dstIP:   srcIP,
+			srcPort: dstPort,
+			dstPort: 54321,
+			sleep:   0,
+			want:    false,
+		},
+		{
+			name:    "expired connection",
+			srcIP:   dstIP,
+			dstIP:   srcIP,
+			srcPort: dstPort,
+			dstPort: srcPort,
+			sleep:   2 * time.Second, // Longer than tracker timeout
+			want:    false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.sleep > 0 {
+				time.Sleep(tt.sleep)
+			}
+			got := tracker.IsValidInbound(tt.srcIP, tt.dstIP, tt.srcPort, tt.dstPort)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestUDPTracker_Cleanup(t *testing.T) {
+	// Use shorter intervals for testing
+	timeout := 50 * time.Millisecond
+	cleanupInterval := 25 * time.Millisecond
+
+	// Create tracker with custom cleanup interval
+	tracker := &UDPTracker{
+		connections:   make(map[ConnKey]*UDPConnTrack),
+		timeout:       timeout,
+		cleanupTicker: time.NewTicker(cleanupInterval),
+		done:          make(chan struct{}),
+		ipPool:        NewPreallocatedIPs(),
+		logger:        logger,
+	}
+
+	// Start cleanup routine
+	go tracker.cleanupRoutine()
+
+	// Add some connections
+	connections := []struct {
+		srcIP   net.IP
+		dstIP   net.IP
+		srcPort uint16
+		dstPort uint16
+	}{
+		{
+			srcIP:   net.ParseIP("192.168.1.2"),
+			dstIP:   net.ParseIP("192.168.1.3"),
+			srcPort: 12345,
+			dstPort: 53,
+		},
+		{
+			srcIP:   net.ParseIP("192.168.1.4"),
+			dstIP:   net.ParseIP("192.168.1.5"),
+			srcPort: 12346,
+			dstPort: 53,
+		},
+	}
+
+	for _, conn := range connections {
+		tracker.TrackOutbound(conn.srcIP, conn.dstIP, conn.srcPort, conn.dstPort)
+	}
+
+	// Verify initial connections
+	assert.Len(t, tracker.connections, 2)
+
+	// Wait for connection timeout and cleanup interval
+	time.Sleep(timeout + 2*cleanupInterval)
+
+	tracker.mutex.RLock()
+	connCount := len(tracker.connections)
+	tracker.mutex.RUnlock()
+
+	// Verify connections were cleaned up
+	assert.Equal(t, 0, connCount, "Expected all connections to be cleaned up")
+
+	// Properly close the tracker
+	tracker.Close()
+}
+
+func BenchmarkUDPTracker(b *testing.B) {
+	b.Run("TrackOutbound", func(b *testing.B) {
+		tracker := NewUDPTracker(DefaultUDPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), 80)
+		}
+	})
+
+	b.Run("IsValidInbound", func(b *testing.B) {
+		tracker := NewUDPTracker(DefaultUDPTimeout, logger)
+		defer tracker.Close()
+
+		srcIP := net.ParseIP("192.168.1.1")
+		dstIP := net.ParseIP("192.168.1.2")
+
+		// Pre-populate some connections
+		for i := 0; i < 1000; i++ {
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i), 80)
+		}
+
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			tracker.IsValidInbound(dstIP, srcIP, 80, uint16(i%1000))
+		}
+	})
+}

client/firewall/uspfilter/forwarder/endpoint.go

@@ -0,0 +1,81 @@
+package forwarder
+
+import (
+	wgdevice "golang.zx2c4.com/wireguard/device"
+	"gvisor.dev/gvisor/pkg/tcpip"
+	"gvisor.dev/gvisor/pkg/tcpip/header"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+// endpoint implements stack.LinkEndpoint and handles integration with the wireguard device
+type endpoint struct {
+	logger     *nblog.Logger
+	dispatcher stack.NetworkDispatcher
+	device     *wgdevice.Device
+	mtu        uint32
+}
+
+func (e *endpoint) Attach(dispatcher stack.NetworkDispatcher) {
+	e.dispatcher = dispatcher
+}
+
+func (e *endpoint) IsAttached() bool {
+	return e.dispatcher != nil
+}
+
+func (e *endpoint) MTU() uint32 {
+	return e.mtu
+}
+
+func (e *endpoint) Capabilities() stack.LinkEndpointCapabilities {
+	return stack.CapabilityNone
+}
+
+func (e *endpoint) MaxHeaderLength() uint16 {
+	return 0
+}
+
+func (e *endpoint) LinkAddress() tcpip.LinkAddress {
+	return ""
+}
+
+func (e *endpoint) WritePackets(pkts stack.PacketBufferList) (int, tcpip.Error) {
+	var written int
+	for _, pkt := range pkts.AsSlice() {
+		netHeader := header.IPv4(pkt.NetworkHeader().View().AsSlice())
+
+		data := stack.PayloadSince(pkt.NetworkHeader())
+		if data == nil {
+			continue
+		}
+
+		// Send the packet through WireGuard
+		address := netHeader.DestinationAddress()
+		err := e.device.CreateOutboundPacket(data.AsSlice(), address.AsSlice())
+		if err != nil {
+			e.logger.Error("CreateOutboundPacket: %v", err)
+			continue
+		}
+		written++
+	}
+
+	return written, nil
+}
+
+func (e *endpoint) Wait() {
+	// not required
+}
+
+func (e *endpoint) ARPHardwareType() header.ARPHardwareType {
+	return header.ARPHardwareNone
+}
+
+func (e *endpoint) AddHeader(*stack.PacketBuffer) {
+	// not required
+}
+
+func (e *endpoint) ParseHeader(*stack.PacketBuffer) bool {
+	return true
+}

client/firewall/uspfilter/forwarder/forwarder.go

@@ -0,0 +1,166 @@
+package forwarder
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"runtime"
+
+	log "github.com/sirupsen/logrus"
+	"gvisor.dev/gvisor/pkg/buffer"
+	"gvisor.dev/gvisor/pkg/tcpip"
+	"gvisor.dev/gvisor/pkg/tcpip/header"
+	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/icmp"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/common"
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+const (
+	defaultReceiveWindow = 32768
+	defaultMaxInFlight   = 1024
+	iosReceiveWindow     = 16384
+	iosMaxInFlight       = 256
+)
+
+type Forwarder struct {
+	logger       *nblog.Logger
+	stack        *stack.Stack
+	endpoint     *endpoint
+	udpForwarder *udpForwarder
+	ctx          context.Context
+	cancel       context.CancelFunc
+	ip           net.IP
+	netstack     bool
+}
+
+func New(iface common.IFaceMapper, logger *nblog.Logger, netstack bool) (*Forwarder, error) {
+	s := stack.New(stack.Options{
+		NetworkProtocols: []stack.NetworkProtocolFactory{ipv4.NewProtocol},
+		TransportProtocols: []stack.TransportProtocolFactory{
+			tcp.NewProtocol,
+			udp.NewProtocol,
+			icmp.NewProtocol4,
+		},
+		HandleLocal: false,
+	})
+
+	mtu, err := iface.GetDevice().MTU()
+	if err != nil {
+		return nil, fmt.Errorf("get MTU: %w", err)
+	}
+	nicID := tcpip.NICID(1)
+	endpoint := &endpoint{
+		logger: logger,
+		device: iface.GetWGDevice(),
+		mtu:    uint32(mtu),
+	}
+
+	if err := s.CreateNIC(nicID, endpoint); err != nil {
+		return nil, fmt.Errorf("failed to create NIC: %v", err)
+	}
+
+	ones, _ := iface.Address().Network.Mask.Size()
+	protoAddr := tcpip.ProtocolAddress{
+		Protocol: ipv4.ProtocolNumber,
+		AddressWithPrefix: tcpip.AddressWithPrefix{
+			Address:   tcpip.AddrFromSlice(iface.Address().IP.To4()),
+			PrefixLen: ones,
+		},
+	}
+
+	if err := s.AddProtocolAddress(nicID, protoAddr, stack.AddressProperties{}); err != nil {
+		return nil, fmt.Errorf("failed to add protocol address: %s", err)
+	}
+
+	defaultSubnet, err := tcpip.NewSubnet(
+		tcpip.AddrFrom4([4]byte{0, 0, 0, 0}),
+		tcpip.MaskFromBytes([]byte{0, 0, 0, 0}),
+	)
+	if err != nil {
+		return nil, fmt.Errorf("creating default subnet: %w", err)
+	}
+
+	if err := s.SetPromiscuousMode(nicID, true); err != nil {
+		return nil, fmt.Errorf("set promiscuous mode: %s", err)
+	}
+	if err := s.SetSpoofing(nicID, true); err != nil {
+		return nil, fmt.Errorf("set spoofing: %s", err)
+	}
+
+	s.SetRouteTable([]tcpip.Route{
+		{
+			Destination: defaultSubnet,
+			NIC:         nicID,
+		},
+	})
+
+	ctx, cancel := context.WithCancel(context.Background())
+	f := &Forwarder{
+		logger:       logger,
+		stack:        s,
+		endpoint:     endpoint,
+		udpForwarder: newUDPForwarder(mtu, logger),
+		ctx:          ctx,
+		cancel:       cancel,
+		netstack:     netstack,
+		ip:           iface.Address().IP,
+	}
+
+	receiveWindow := defaultReceiveWindow
+	maxInFlight := defaultMaxInFlight
+	if runtime.GOOS == "ios" {
+		receiveWindow = iosReceiveWindow
+		maxInFlight = iosMaxInFlight
+	}
+
+	tcpForwarder := tcp.NewForwarder(s, receiveWindow, maxInFlight, f.handleTCP)
+	s.SetTransportProtocolHandler(tcp.ProtocolNumber, tcpForwarder.HandlePacket)
+
+	udpForwarder := udp.NewForwarder(s, f.handleUDP)
+	s.SetTransportProtocolHandler(udp.ProtocolNumber, udpForwarder.HandlePacket)
+
+	s.SetTransportProtocolHandler(icmp.ProtocolNumber4, f.handleICMP)
+
+	log.Debugf("forwarder: Initialization complete with NIC %d", nicID)
+	return f, nil
+}
+
+func (f *Forwarder) InjectIncomingPacket(payload []byte) error {
+	if len(payload) < header.IPv4MinimumSize {
+		return fmt.Errorf("packet too small: %d bytes", len(payload))
+	}
+
+	pkt := stack.NewPacketBuffer(stack.PacketBufferOptions{
+		Payload: buffer.MakeWithData(payload),
+	})
+	defer pkt.DecRef()
+
+	if f.endpoint.dispatcher != nil {
+		f.endpoint.dispatcher.DeliverNetworkPacket(ipv4.ProtocolNumber, pkt)
+	}
+	return nil
+}
+
+// Stop gracefully shuts down the forwarder
+func (f *Forwarder) Stop() {
+	f.cancel()
+
+	if f.udpForwarder != nil {
+		f.udpForwarder.Stop()
+	}
+
+	f.stack.Close()
+	f.stack.Wait()
+}
+
+func (f *Forwarder) determineDialAddr(addr tcpip.Address) net.IP {
+	if f.netstack && f.ip.Equal(addr.AsSlice()) {
+		return net.IPv4(127, 0, 0, 1)
+	}
+	return addr.AsSlice()
+}

client/firewall/uspfilter/forwarder/icmp.go

@@ -0,0 +1,109 @@
+package forwarder
+
+import (
+	"context"
+	"net"
+	"time"
+
+	"gvisor.dev/gvisor/pkg/tcpip/header"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+)
+
+// handleICMP handles ICMP packets from the network stack
+func (f *Forwarder) handleICMP(id stack.TransportEndpointID, pkt stack.PacketBufferPtr) bool {
+	ctx, cancel := context.WithTimeout(f.ctx, 5*time.Second)
+	defer cancel()
+
+	lc := net.ListenConfig{}
+	// TODO: support non-root
+	conn, err := lc.ListenPacket(ctx, "ip4:icmp", "0.0.0.0")
+	if err != nil {
+		f.logger.Error("Failed to create ICMP socket for %v: %v", id, err)
+
+		// This will make netstack reply on behalf of the original destination, that's ok for now
+		return false
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			f.logger.Debug("Failed to close ICMP socket: %v", err)
+		}
+	}()
+
+	dstIP := f.determineDialAddr(id.LocalAddress)
+	dst := &net.IPAddr{IP: dstIP}
+
+	// Get the complete ICMP message (header + data)
+	fullPacket := stack.PayloadSince(pkt.TransportHeader())
+	payload := fullPacket.AsSlice()
+
+	icmpHdr := header.ICMPv4(pkt.TransportHeader().View().AsSlice())
+
+	// For Echo Requests, send and handle response
+	switch icmpHdr.Type() {
+	case header.ICMPv4Echo:
+		return f.handleEchoResponse(icmpHdr, payload, dst, conn, id)
+	case header.ICMPv4EchoReply:
+		// dont process our own replies
+		return true
+	default:
+	}
+
+	// For other ICMP types (Time Exceeded, Destination Unreachable, etc)
+	_, err = conn.WriteTo(payload, dst)
+	if err != nil {
+		f.logger.Error("Failed to write ICMP packet for %v: %v", id, err)
+		return true
+	}
+
+	f.logger.Trace("Forwarded ICMP packet %v type=%v code=%v",
+		id, icmpHdr.Type(), icmpHdr.Code())
+
+	return true
+}
+
+func (f *Forwarder) handleEchoResponse(icmpHdr header.ICMPv4, payload []byte, dst *net.IPAddr, conn net.PacketConn, id stack.TransportEndpointID) bool {
+	if _, err := conn.WriteTo(payload, dst); err != nil {
+		f.logger.Error("Failed to write ICMP packet for %v: %v", id, err)
+		return true
+	}
+
+	f.logger.Trace("Forwarded ICMP packet %v type=%v code=%v",
+		id, icmpHdr.Type(), icmpHdr.Code())
+
+	if err := conn.SetReadDeadline(time.Now().Add(5 * time.Second)); err != nil {
+		f.logger.Error("Failed to set read deadline for ICMP response: %v", err)
+		return true
+	}
+
+	response := make([]byte, f.endpoint.mtu)
+	n, _, err := conn.ReadFrom(response)
+	if err != nil {
+		if !isTimeout(err) {
+			f.logger.Error("Failed to read ICMP response: %v", err)
+		}
+		return true
+	}
+
+	ipHdr := make([]byte, header.IPv4MinimumSize)
+	ip := header.IPv4(ipHdr)
+	ip.Encode(&header.IPv4Fields{
+		TotalLength: uint16(header.IPv4MinimumSize + n),
+		TTL:         64,
+		Protocol:    uint8(header.ICMPv4ProtocolNumber),
+		SrcAddr:     id.LocalAddress,
+		DstAddr:     id.RemoteAddress,
+	})
+	ip.SetChecksum(^ip.CalculateChecksum())
+
+	fullPacket := make([]byte, 0, len(ipHdr)+n)
+	fullPacket = append(fullPacket, ipHdr...)
+	fullPacket = append(fullPacket, response[:n]...)
+
+	if err := f.InjectIncomingPacket(fullPacket); err != nil {
+		f.logger.Error("Failed to inject ICMP response: %v", err)
+		return true
+	}
+
+	f.logger.Trace("Forwarded ICMP echo reply for %v", id)
+	return true
+}

client/firewall/uspfilter/forwarder/tcp.go

@@ -0,0 +1,90 @@
+package forwarder
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+
+	"gvisor.dev/gvisor/pkg/tcpip"
+	"gvisor.dev/gvisor/pkg/tcpip/adapters/gonet"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
+	"gvisor.dev/gvisor/pkg/waiter"
+)
+
+// handleTCP is called by the TCP forwarder for new connections.
+func (f *Forwarder) handleTCP(r *tcp.ForwarderRequest) {
+	id := r.ID()
+
+	dialAddr := fmt.Sprintf("%s:%d", f.determineDialAddr(id.LocalAddress), id.LocalPort)
+
+	outConn, err := (&net.Dialer{}).DialContext(f.ctx, "tcp", dialAddr)
+	if err != nil {
+		r.Complete(true)
+		f.logger.Trace("forwarder: dial error for %v: %v", id, err)
+		return
+	}
+
+	// Create wait queue for blocking syscalls
+	wq := waiter.Queue{}
+
+	ep, epErr := r.CreateEndpoint(&wq)
+	if epErr != nil {
+		f.logger.Error("forwarder: failed to create TCP endpoint: %v", epErr)
+		if err := outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: outConn close error: %v", err)
+		}
+		r.Complete(true)
+		return
+	}
+
+	// Complete the handshake
+	r.Complete(false)
+
+	inConn := gonet.NewTCPConn(&wq, ep)
+
+	f.logger.Trace("forwarder: established TCP connection %v", id)
+
+	go f.proxyTCP(id, inConn, outConn, ep)
+}
+
+func (f *Forwarder) proxyTCP(id stack.TransportEndpointID, inConn *gonet.TCPConn, outConn net.Conn, ep tcpip.Endpoint) {
+	defer func() {
+		if err := inConn.Close(); err != nil {
+			f.logger.Debug("forwarder: inConn close error: %v", err)
+		}
+		if err := outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: outConn close error: %v", err)
+		}
+		ep.Close()
+	}()
+
+	// Create context for managing the proxy goroutines
+	ctx, cancel := context.WithCancel(f.ctx)
+	defer cancel()
+
+	errChan := make(chan error, 2)
+
+	go func() {
+		_, err := io.Copy(outConn, inConn)
+		errChan <- err
+	}()
+
+	go func() {
+		_, err := io.Copy(inConn, outConn)
+		errChan <- err
+	}()
+
+	select {
+	case <-ctx.Done():
+		f.logger.Trace("forwarder: tearing down TCP connection %v due to context done", id)
+		return
+	case err := <-errChan:
+		if err != nil && !isClosedError(err) {
+			f.logger.Error("proxyTCP: copy error: %v", err)
+		}
+		f.logger.Trace("forwarder: tearing down TCP connection %v", id)
+		return
+	}
+}

client/firewall/uspfilter/forwarder/udp.go

@@ -0,0 +1,288 @@
+package forwarder
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"gvisor.dev/gvisor/pkg/tcpip"
+	"gvisor.dev/gvisor/pkg/tcpip/adapters/gonet"
+	"gvisor.dev/gvisor/pkg/tcpip/stack"
+	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
+	"gvisor.dev/gvisor/pkg/waiter"
+
+	nblog "github.com/netbirdio/netbird/client/firewall/uspfilter/log"
+)
+
+const (
+	udpTimeout = 30 * time.Second
+)
+
+type udpPacketConn struct {
+	conn     *gonet.UDPConn
+	outConn  net.Conn
+	lastSeen atomic.Int64
+	cancel   context.CancelFunc
+	ep       tcpip.Endpoint
+}
+
+type udpForwarder struct {
+	sync.RWMutex
+	logger  *nblog.Logger
+	conns   map[stack.TransportEndpointID]*udpPacketConn
+	bufPool sync.Pool
+	ctx     context.Context
+	cancel  context.CancelFunc
+}
+
+type idleConn struct {
+	id   stack.TransportEndpointID
+	conn *udpPacketConn
+}
+
+func newUDPForwarder(mtu int, logger *nblog.Logger) *udpForwarder {
+	ctx, cancel := context.WithCancel(context.Background())
+	f := &udpForwarder{
+		logger: logger,
+		conns:  make(map[stack.TransportEndpointID]*udpPacketConn),
+		ctx:    ctx,
+		cancel: cancel,
+		bufPool: sync.Pool{
+			New: func() any {
+				b := make([]byte, mtu)
+				return &b
+			},
+		},
+	}
+	go f.cleanup()
+	return f
+}
+
+// Stop stops the UDP forwarder and all active connections
+func (f *udpForwarder) Stop() {
+	f.cancel()
+
+	f.Lock()
+	defer f.Unlock()
+
+	for id, conn := range f.conns {
+		conn.cancel()
+		if err := conn.conn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP conn close error for %v: %v", id, err)
+		}
+		if err := conn.outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP outConn close error for %v: %v", id, err)
+		}
+
+		conn.ep.Close()
+		delete(f.conns, id)
+	}
+}
+
+// cleanup periodically removes idle UDP connections
+func (f *udpForwarder) cleanup() {
+	ticker := time.NewTicker(time.Minute)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-f.ctx.Done():
+			return
+		case <-ticker.C:
+			var idleConns []idleConn
+
+			f.RLock()
+			for id, conn := range f.conns {
+				if conn.getIdleDuration() > udpTimeout {
+					idleConns = append(idleConns, idleConn{id, conn})
+				}
+			}
+			f.RUnlock()
+
+			for _, idle := range idleConns {
+				idle.conn.cancel()
+				if err := idle.conn.conn.Close(); err != nil {
+					f.logger.Debug("forwarder: UDP conn close error for %v: %v", idle.id, err)
+				}
+				if err := idle.conn.outConn.Close(); err != nil {
+					f.logger.Debug("forwarder: UDP outConn close error for %v: %v", idle.id, err)
+				}
+
+				idle.conn.ep.Close()
+
+				f.Lock()
+				delete(f.conns, idle.id)
+				f.Unlock()
+
+				f.logger.Trace("forwarder: cleaned up idle UDP connection %v", idle.id)
+			}
+		}
+	}
+}
+
+// handleUDP is called by the UDP forwarder for new packets
+func (f *Forwarder) handleUDP(r *udp.ForwarderRequest) {
+	if f.ctx.Err() != nil {
+		f.logger.Trace("forwarder: context done, dropping UDP packet")
+		return
+	}
+
+	id := r.ID()
+
+	f.udpForwarder.RLock()
+	_, exists := f.udpForwarder.conns[id]
+	f.udpForwarder.RUnlock()
+	if exists {
+		f.logger.Trace("forwarder: existing UDP connection for %v", id)
+		return
+	}
+
+	dstAddr := fmt.Sprintf("%s:%d", f.determineDialAddr(id.LocalAddress), id.LocalPort)
+	outConn, err := (&net.Dialer{}).DialContext(f.ctx, "udp", dstAddr)
+	if err != nil {
+		f.logger.Debug("forwarder: UDP dial error for %v: %v", id, err)
+		// TODO: Send ICMP error message
+		return
+	}
+
+	// Create wait queue for blocking syscalls
+	wq := waiter.Queue{}
+	ep, epErr := r.CreateEndpoint(&wq)
+	if epErr != nil {
+		f.logger.Debug("forwarder: failed to create UDP endpoint: %v", epErr)
+		if err := outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP outConn close error for %v: %v", id, err)
+		}
+		return
+	}
+
+	inConn := gonet.NewUDPConn(f.stack, &wq, ep)
+	connCtx, connCancel := context.WithCancel(f.ctx)
+
+	pConn := &udpPacketConn{
+		conn:    inConn,
+		outConn: outConn,
+		cancel:  connCancel,
+		ep:      ep,
+	}
+	pConn.updateLastSeen()
+
+	f.udpForwarder.Lock()
+	// Double-check no connection was created while we were setting up
+	if _, exists := f.udpForwarder.conns[id]; exists {
+		f.udpForwarder.Unlock()
+		pConn.cancel()
+		if err := inConn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP inConn close error for %v: %v", id, err)
+		}
+		if err := outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP outConn close error for %v: %v", id, err)
+		}
+		return
+	}
+	f.udpForwarder.conns[id] = pConn
+	f.udpForwarder.Unlock()
+
+	f.logger.Trace("forwarder: established UDP connection to %v", id)
+	go f.proxyUDP(connCtx, pConn, id, ep)
+}
+
+func (f *Forwarder) proxyUDP(ctx context.Context, pConn *udpPacketConn, id stack.TransportEndpointID, ep tcpip.Endpoint) {
+	defer func() {
+		pConn.cancel()
+		if err := pConn.conn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP inConn close error for %v: %v", id, err)
+		}
+		if err := pConn.outConn.Close(); err != nil {
+			f.logger.Debug("forwarder: UDP outConn close error for %v: %v", id, err)
+		}
+
+		ep.Close()
+
+		f.udpForwarder.Lock()
+		delete(f.udpForwarder.conns, id)
+		f.udpForwarder.Unlock()
+	}()
+
+	errChan := make(chan error, 2)
+
+	go func() {
+		errChan <- pConn.copy(ctx, pConn.conn, pConn.outConn, &f.udpForwarder.bufPool, "outbound->inbound")
+	}()
+
+	go func() {
+		errChan <- pConn.copy(ctx, pConn.outConn, pConn.conn, &f.udpForwarder.bufPool, "inbound->outbound")
+	}()
+
+	select {
+	case <-ctx.Done():
+		f.logger.Trace("forwarder: tearing down UDP connection %v due to context done", id)
+		return
+	case err := <-errChan:
+		if err != nil && !isClosedError(err) {
+			f.logger.Error("proxyUDP: copy error: %v", err)
+		}
+		f.logger.Trace("forwarder: tearing down UDP connection %v", id)
+		return
+	}
+}
+
+func (c *udpPacketConn) updateLastSeen() {
+	c.lastSeen.Store(time.Now().UnixNano())
+}
+
+func (c *udpPacketConn) getIdleDuration() time.Duration {
+	lastSeen := time.Unix(0, c.lastSeen.Load())
+	return time.Since(lastSeen)
+}
+
+func (c *udpPacketConn) copy(ctx context.Context, dst net.Conn, src net.Conn, bufPool *sync.Pool, direction string) error {
+	bufp := bufPool.Get().(*[]byte)
+	defer bufPool.Put(bufp)
+	buffer := *bufp
+
+	if err := src.SetReadDeadline(time.Now().Add(udpTimeout)); err != nil {
+		return fmt.Errorf("set read deadline: %w", err)
+	}
+	if err := src.SetWriteDeadline(time.Now().Add(udpTimeout)); err != nil {
+		return fmt.Errorf("set write deadline: %w", err)
+	}
+
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+			n, err := src.Read(buffer)
+			if err != nil {
+				if isTimeout(err) {
+					continue
+				}
+				return fmt.Errorf("read from %s: %w", direction, err)
+			}
+
+			_, err = dst.Write(buffer[:n])
+			if err != nil {
+				return fmt.Errorf("write to %s: %w", direction, err)
+			}
+
+			c.updateLastSeen()
+		}
+	}
+}
+
+func isClosedError(err error) bool {
+	return errors.Is(err, net.ErrClosed) || errors.Is(err, context.Canceled)
+}
+
+func isTimeout(err error) bool {
+	var netErr net.Error
+	if errors.As(err, &netErr) {
+		return netErr.Timeout()
+	}
+	return false
+}

client/firewall/uspfilter/localip.go

@@ -0,0 +1,134 @@
+package uspfilter
+
+import (
+	"fmt"
+	"net"
+	"sync"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/common"
+)
+
+type localIPManager struct {
+	mu sync.RWMutex
+
+	// Use bitmap for IPv4 (32 bits * 2^16 = 256KB memory)
+	ipv4Bitmap [1 << 16]uint32
+}
+
+func newLocalIPManager() *localIPManager {
+	return &localIPManager{}
+}
+
+func (m *localIPManager) setBitmapBit(ip net.IP) {
+	ipv4 := ip.To4()
+	if ipv4 == nil {
+		return
+	}
+	high := (uint16(ipv4[0]) << 8) | uint16(ipv4[1])
+	low := (uint16(ipv4[2]) << 8) | uint16(ipv4[3])
+	m.ipv4Bitmap[high] |= 1 << (low % 32)
+}
+
+func (m *localIPManager) checkBitmapBit(ip net.IP) bool {
+	ipv4 := ip.To4()
+	if ipv4 == nil {
+		return false
+	}
+	high := (uint16(ipv4[0]) << 8) | uint16(ipv4[1])
+	low := (uint16(ipv4[2]) << 8) | uint16(ipv4[3])
+	return (m.ipv4Bitmap[high] & (1 << (low % 32))) != 0
+}
+
+func (m *localIPManager) processIP(ip net.IP, newIPv4Bitmap *[1 << 16]uint32, ipv4Set map[string]struct{}, ipv4Addresses *[]string) error {
+	if ipv4 := ip.To4(); ipv4 != nil {
+		high := (uint16(ipv4[0]) << 8) | uint16(ipv4[1])
+		low := (uint16(ipv4[2]) << 8) | uint16(ipv4[3])
+		if int(high) >= len(*newIPv4Bitmap) {
+			return fmt.Errorf("invalid IPv4 address: %s", ip)
+		}
+		ipStr := ip.String()
+		if _, exists := ipv4Set[ipStr]; !exists {
+			ipv4Set[ipStr] = struct{}{}
+			*ipv4Addresses = append(*ipv4Addresses, ipStr)
+			newIPv4Bitmap[high] |= 1 << (low % 32)
+		}
+	}
+	return nil
+}
+
+func (m *localIPManager) processInterface(iface net.Interface, newIPv4Bitmap *[1 << 16]uint32, ipv4Set map[string]struct{}, ipv4Addresses *[]string) {
+	addrs, err := iface.Addrs()
+	if err != nil {
+		log.Debugf("get addresses for interface %s failed: %v", iface.Name, err)
+		return
+	}
+
+	for _, addr := range addrs {
+		var ip net.IP
+		switch v := addr.(type) {
+		case *net.IPNet:
+			ip = v.IP
+		case *net.IPAddr:
+			ip = v.IP
+		default:
+			continue
+		}
+
+		if err := m.processIP(ip, newIPv4Bitmap, ipv4Set, ipv4Addresses); err != nil {
+			log.Debugf("process IP failed: %v", err)
+		}
+	}
+}
+
+func (m *localIPManager) UpdateLocalIPs(iface common.IFaceMapper) (err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("panic: %v", r)
+		}
+	}()
+
+	var newIPv4Bitmap [1 << 16]uint32
+	ipv4Set := make(map[string]struct{})
+	var ipv4Addresses []string
+
+	// 127.0.0.0/8
+	high := uint16(127) << 8
+	for i := uint16(0); i < 256; i++ {
+		newIPv4Bitmap[high|i] = 0xffffffff
+	}
+
+	if iface != nil {
+		if err := m.processIP(iface.Address().IP, &newIPv4Bitmap, ipv4Set, &ipv4Addresses); err != nil {
+			return err
+		}
+	}
+
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		log.Warnf("failed to get interfaces: %v", err)
+	} else {
+		for _, intf := range interfaces {
+			m.processInterface(intf, &newIPv4Bitmap, ipv4Set, &ipv4Addresses)
+		}
+	}
+
+	m.mu.Lock()
+	m.ipv4Bitmap = newIPv4Bitmap
+	m.mu.Unlock()
+
+	log.Debugf("Local IPv4 addresses: %v", ipv4Addresses)
+	return nil
+}
+
+func (m *localIPManager) IsLocalIP(ip net.IP) bool {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+
+	if ipv4 := ip.To4(); ipv4 != nil {
+		return m.checkBitmapBit(ipv4)
+	}
+
+	return false
+}

client/firewall/uspfilter/localip_test.go

@@ -0,0 +1,270 @@
+package uspfilter
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/client/iface"
+)
+
+func TestLocalIPManager(t *testing.T) {
+	tests := []struct {
+		name      string
+		setupAddr iface.WGAddress
+		testIP    net.IP
+		expected  bool
+	}{
+		{
+			name: "Localhost range",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("192.168.1.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("192.168.1.0"),
+					Mask: net.CIDRMask(24, 32),
+				},
+			},
+			testIP:   net.ParseIP("127.0.0.2"),
+			expected: true,
+		},
+		{
+			name: "Localhost standard address",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("192.168.1.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("192.168.1.0"),
+					Mask: net.CIDRMask(24, 32),
+				},
+			},
+			testIP:   net.ParseIP("127.0.0.1"),
+			expected: true,
+		},
+		{
+			name: "Localhost range edge",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("192.168.1.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("192.168.1.0"),
+					Mask: net.CIDRMask(24, 32),
+				},
+			},
+			testIP:   net.ParseIP("127.255.255.255"),
+			expected: true,
+		},
+		{
+			name: "Local IP matches",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("192.168.1.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("192.168.1.0"),
+					Mask: net.CIDRMask(24, 32),
+				},
+			},
+			testIP:   net.ParseIP("192.168.1.1"),
+			expected: true,
+		},
+		{
+			name: "Local IP doesn't match",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("192.168.1.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("192.168.1.0"),
+					Mask: net.CIDRMask(24, 32),
+				},
+			},
+			testIP:   net.ParseIP("192.168.1.2"),
+			expected: false,
+		},
+		{
+			name: "IPv6 address",
+			setupAddr: iface.WGAddress{
+				IP: net.ParseIP("fe80::1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("fe80::"),
+					Mask: net.CIDRMask(64, 128),
+				},
+			},
+			testIP:   net.ParseIP("fe80::1"),
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			manager := newLocalIPManager()
+
+			mock := &IFaceMock{
+				AddressFunc: func() iface.WGAddress {
+					return tt.setupAddr
+				},
+			}
+
+			err := manager.UpdateLocalIPs(mock)
+			require.NoError(t, err)
+
+			result := manager.IsLocalIP(tt.testIP)
+			require.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestLocalIPManager_AllInterfaces(t *testing.T) {
+	manager := newLocalIPManager()
+	mock := &IFaceMock{}
+
+	// Get actual local interfaces
+	interfaces, err := net.Interfaces()
+	require.NoError(t, err)
+
+	var tests []struct {
+		ip       string
+		expected bool
+	}
+
+	// Add all local interface IPs to test cases
+	for _, iface := range interfaces {
+		addrs, err := iface.Addrs()
+		require.NoError(t, err)
+
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			default:
+				continue
+			}
+
+			if ip4 := ip.To4(); ip4 != nil {
+				tests = append(tests, struct {
+					ip       string
+					expected bool
+				}{
+					ip:       ip4.String(),
+					expected: true,
+				})
+			}
+		}
+	}
+
+	// Add some external IPs as negative test cases
+	externalIPs := []string{
+		"8.8.8.8",
+		"1.1.1.1",
+		"208.67.222.222",
+	}
+	for _, ip := range externalIPs {
+		tests = append(tests, struct {
+			ip       string
+			expected bool
+		}{
+			ip:       ip,
+			expected: false,
+		})
+	}
+
+	require.NotEmpty(t, tests, "No test cases generated")
+
+	err = manager.UpdateLocalIPs(mock)
+	require.NoError(t, err)
+
+	t.Logf("Testing %d IPs", len(tests))
+	for _, tt := range tests {
+		t.Run(tt.ip, func(t *testing.T) {
+			result := manager.IsLocalIP(net.ParseIP(tt.ip))
+			require.Equal(t, tt.expected, result, "IP: %s", tt.ip)
+		})
+	}
+}
+
+// MapImplementation is a version using map[string]struct{}
+type MapImplementation struct {
+	localIPs map[string]struct{}
+}
+
+func BenchmarkIPChecks(b *testing.B) {
+	interfaces := make([]net.IP, 16)
+	for i := range interfaces {
+		interfaces[i] = net.IPv4(10, 0, byte(i>>8), byte(i))
+	}
+
+	// Setup bitmap version
+	bitmapManager := &localIPManager{
+		ipv4Bitmap: [1 << 16]uint32{},
+	}
+	for _, ip := range interfaces[:8] { // Add half of IPs
+		bitmapManager.setBitmapBit(ip)
+	}
+
+	// Setup map version
+	mapManager := &MapImplementation{
+		localIPs: make(map[string]struct{}),
+	}
+	for _, ip := range interfaces[:8] {
+		mapManager.localIPs[ip.String()] = struct{}{}
+	}
+
+	b.Run("Bitmap_Hit", func(b *testing.B) {
+		ip := interfaces[4]
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			bitmapManager.checkBitmapBit(ip)
+		}
+	})
+
+	b.Run("Bitmap_Miss", func(b *testing.B) {
+		ip := interfaces[12]
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			bitmapManager.checkBitmapBit(ip)
+		}
+	})
+
+	b.Run("Map_Hit", func(b *testing.B) {
+		ip := interfaces[4]
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			// nolint:gosimple
+			_, _ = mapManager.localIPs[ip.String()]
+		}
+	})
+
+	b.Run("Map_Miss", func(b *testing.B) {
+		ip := interfaces[12]
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			// nolint:gosimple
+			_, _ = mapManager.localIPs[ip.String()]
+		}
+	})
+}
+
+func BenchmarkWGPosition(b *testing.B) {
+	wgIP := net.ParseIP("10.10.0.1")
+
+	// Create two managers - one checks WG IP first, other checks it last
+	b.Run("WG_First", func(b *testing.B) {
+		bm := &localIPManager{ipv4Bitmap: [1 << 16]uint32{}}
+		bm.setBitmapBit(wgIP)
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			bm.checkBitmapBit(wgIP)
+		}
+	})
+
+	b.Run("WG_Last", func(b *testing.B) {
+		bm := &localIPManager{ipv4Bitmap: [1 << 16]uint32{}}
+		// Fill with other IPs first
+		for i := 0; i < 15; i++ {
+			bm.setBitmapBit(net.IPv4(10, 0, byte(i>>8), byte(i)))
+		}
+		bm.setBitmapBit(wgIP) // Add WG IP last
+		b.ResetTimer()
+		for i := 0; i < b.N; i++ {
+			bm.checkBitmapBit(wgIP)
+		}
+	})
+}

client/firewall/uspfilter/log/log.go

@@ -0,0 +1,196 @@
+// Package logger provides a high-performance, non-blocking logger for userspace networking
+package log
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	maxBatchSize         = 1024 * 16  // 16KB max batch size
+	maxMessageSize       = 1024 * 2   // 2KB per message
+	bufferSize           = 1024 * 256 // 256KB ring buffer
+	defaultFlushInterval = 2 * time.Second
+)
+
+// Level represents log severity
+type Level uint32
+
+const (
+	LevelPanic Level = iota
+	LevelFatal
+	LevelError
+	LevelWarn
+	LevelInfo
+	LevelDebug
+	LevelTrace
+)
+
+var levelStrings = map[Level]string{
+	LevelPanic: "PANC",
+	LevelFatal: "FATL",
+	LevelError: "ERRO",
+	LevelWarn:  "WARN",
+	LevelInfo:  "INFO",
+	LevelDebug: "DEBG",
+	LevelTrace: "TRAC",
+}
+
+// Logger is a high-performance, non-blocking logger
+type Logger struct {
+	output    io.Writer
+	level     atomic.Uint32
+	buffer    *ringBuffer
+	shutdown  chan struct{}
+	closeOnce sync.Once
+	wg        sync.WaitGroup
+
+	// Reusable buffer pool for formatting messages
+	bufPool sync.Pool
+}
+
+func NewFromLogrus(logrusLogger *log.Logger) *Logger {
+	l := &Logger{
+		output:   logrusLogger.Out,
+		buffer:   newRingBuffer(bufferSize),
+		shutdown: make(chan struct{}),
+		bufPool: sync.Pool{
+			New: func() interface{} {
+				// Pre-allocate buffer for message formatting
+				b := make([]byte, 0, maxMessageSize)
+				return &b
+			},
+		},
+	}
+	logrusLevel := logrusLogger.GetLevel()
+	l.level.Store(uint32(logrusLevel))
+	level := levelStrings[Level(logrusLevel)]
+	log.Debugf("New uspfilter logger created with loglevel %v", level)
+
+	l.wg.Add(1)
+	go l.worker()
+
+	return l
+}
+
+func (l *Logger) SetLevel(level Level) {
+	l.level.Store(uint32(level))
+
+	log.Debugf("Set uspfilter logger loglevel to %v", levelStrings[level])
+}
+
+func (l *Logger) formatMessage(buf *[]byte, level Level, format string, args ...interface{}) {
+	*buf = (*buf)[:0]
+
+	// Timestamp
+	*buf = time.Now().AppendFormat(*buf, "2006-01-02T15:04:05-07:00")
+	*buf = append(*buf, ' ')
+
+	// Level
+	*buf = append(*buf, levelStrings[level]...)
+	*buf = append(*buf, ' ')
+
+	// Message
+	if len(args) > 0 {
+		*buf = append(*buf, fmt.Sprintf(format, args...)...)
+	} else {
+		*buf = append(*buf, format...)
+	}
+
+	*buf = append(*buf, '\n')
+}
+
+func (l *Logger) log(level Level, format string, args ...interface{}) {
+	bufp := l.bufPool.Get().(*[]byte)
+	l.formatMessage(bufp, level, format, args...)
+
+	if len(*bufp) > maxMessageSize {
+		*bufp = (*bufp)[:maxMessageSize]
+	}
+	_, _ = l.buffer.Write(*bufp)
+
+	l.bufPool.Put(bufp)
+}
+
+func (l *Logger) Error(format string, args ...interface{}) {
+	if l.level.Load() >= uint32(LevelError) {
+		l.log(LevelError, format, args...)
+	}
+}
+
+func (l *Logger) Warn(format string, args ...interface{}) {
+	if l.level.Load() >= uint32(LevelWarn) {
+		l.log(LevelWarn, format, args...)
+	}
+}
+
+func (l *Logger) Info(format string, args ...interface{}) {
+	if l.level.Load() >= uint32(LevelInfo) {
+		l.log(LevelInfo, format, args...)
+	}
+}
+
+func (l *Logger) Debug(format string, args ...interface{}) {
+	if l.level.Load() >= uint32(LevelDebug) {
+		l.log(LevelDebug, format, args...)
+	}
+}
+
+func (l *Logger) Trace(format string, args ...interface{}) {
+	if l.level.Load() >= uint32(LevelTrace) {
+		l.log(LevelTrace, format, args...)
+	}
+}
+
+// worker periodically flushes the buffer
+func (l *Logger) worker() {
+	defer l.wg.Done()
+
+	ticker := time.NewTicker(defaultFlushInterval)
+	defer ticker.Stop()
+
+	buf := make([]byte, 0, maxBatchSize)
+
+	for {
+		select {
+		case <-l.shutdown:
+			return
+		case <-ticker.C:
+			// Read accumulated messages
+			n, _ := l.buffer.Read(buf[:cap(buf)])
+			if n == 0 {
+				continue
+			}
+
+			// Write batch
+			_, _ = l.output.Write(buf[:n])
+		}
+	}
+}
+
+// Stop gracefully shuts down the logger
+func (l *Logger) Stop(ctx context.Context) error {
+	done := make(chan struct{})
+
+	l.closeOnce.Do(func() {
+		close(l.shutdown)
+	})
+
+	go func() {
+		l.wg.Wait()
+		close(done)
+	}()
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	case <-done:
+		return nil
+	}
+}

client/firewall/uspfilter/log/ringbuffer.go

@@ -0,0 +1,85 @@
+package log
+
+import "sync"
+
+// ringBuffer is a simple ring buffer implementation
+type ringBuffer struct {
+	buf  []byte
+	size int
+	r, w int64 // Read and write positions
+	mu   sync.Mutex
+}
+
+func newRingBuffer(size int) *ringBuffer {
+	return &ringBuffer{
+		buf:  make([]byte, size),
+		size: size,
+	}
+}
+
+func (r *ringBuffer) Write(p []byte) (n int, err error) {
+	if len(p) == 0 {
+		return 0, nil
+	}
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if len(p) > r.size {
+		p = p[:r.size]
+	}
+
+	n = len(p)
+
+	// Write data, handling wrap-around
+	pos := int(r.w % int64(r.size))
+	writeLen := min(len(p), r.size-pos)
+	copy(r.buf[pos:], p[:writeLen])
+
+	// If we have more data and need to wrap around
+	if writeLen < len(p) {
+		copy(r.buf, p[writeLen:])
+	}
+
+	// Update write position
+	r.w += int64(n)
+
+	return n, nil
+}
+
+func (r *ringBuffer) Read(p []byte) (n int, err error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if r.w == r.r {
+		return 0, nil
+	}
+
+	// Calculate available data accounting for wraparound
+	available := int(r.w - r.r)
+	if available < 0 {
+		available += r.size
+	}
+	available = min(available, r.size)
+
+	// Limit read to buffer size
+	toRead := min(available, len(p))
+	if toRead == 0 {
+		return 0, nil
+	}
+
+	// Read data, handling wrap-around
+	pos := int(r.r % int64(r.size))
+	readLen := min(toRead, r.size-pos)
+	n = copy(p, r.buf[pos:pos+readLen])
+
+	// If we need more data and need to wrap around
+	if readLen < toRead {
+		n += copy(p[readLen:toRead], r.buf[:toRead-readLen])
+	}
+
+	// Update read position
+	r.r += int64(n)
+
+	return n, nil
+}

client/firewall/uspfilter/rule.go

@@ -2,22 +2,22 @@ package uspfilter
 
 import (
 	"net"
+	"net/netip"
 
 	"github.com/google/gopacket"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
 )
 
-// Rule to handle management of rules
-type Rule struct {
+// PeerRule to handle management of rules
+type PeerRule struct {
 	id         string
 	ip         net.IP
 	ipLayer    gopacket.LayerType
 	matchByIP  bool
 	protoLayer gopacket.LayerType
-	direction  firewall.RuleDirection
-	sPort      uint16
-	dPort      uint16
+	sPort      *firewall.Port
+	dPort      *firewall.Port
 	drop       bool
 	comment    string
 
@@ -25,6 +25,21 @@ type Rule struct {
 }
 
 // GetRuleID returns the rule id
-func (r *Rule) GetRuleID() string {
+func (r *PeerRule) GetRuleID() string {
+	return r.id
+}
+
+type RouteRule struct {
+	id          string
+	sources     []netip.Prefix
+	destination netip.Prefix
+	proto       firewall.Protocol
+	srcPort     *firewall.Port
+	dstPort     *firewall.Port
+	action      firewall.Action
+}
+
+// GetRuleID returns the rule id
+func (r *RouteRule) GetRuleID() string {
 	return r.id
 }

client/firewall/uspfilter/tracer.go

@@ -0,0 +1,390 @@
+package uspfilter
+
+import (
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+
+	fw "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/conntrack"
+)
+
+type PacketStage int
+
+const (
+	StageReceived PacketStage = iota
+	StageConntrack
+	StagePeerACL
+	StageRouting
+	StageRouteACL
+	StageForwarding
+	StageCompleted
+)
+
+const msgProcessingCompleted = "Processing completed"
+
+func (s PacketStage) String() string {
+	return map[PacketStage]string{
+		StageReceived:   "Received",
+		StageConntrack:  "Connection Tracking",
+		StagePeerACL:    "Peer ACL",
+		StageRouting:    "Routing",
+		StageRouteACL:   "Route ACL",
+		StageForwarding: "Forwarding",
+		StageCompleted:  "Completed",
+	}[s]
+}
+
+type ForwarderAction struct {
+	Action     string
+	RemoteAddr string
+	Error      error
+}
+
+type TraceResult struct {
+	Timestamp       time.Time
+	Stage           PacketStage
+	Message         string
+	Allowed         bool
+	ForwarderAction *ForwarderAction
+}
+
+type PacketTrace struct {
+	SourceIP        net.IP
+	DestinationIP   net.IP
+	Protocol        string
+	SourcePort      uint16
+	DestinationPort uint16
+	Direction       fw.RuleDirection
+	Results         []TraceResult
+}
+
+type TCPState struct {
+	SYN bool
+	ACK bool
+	FIN bool
+	RST bool
+	PSH bool
+	URG bool
+}
+
+type PacketBuilder struct {
+	SrcIP       net.IP
+	DstIP       net.IP
+	Protocol    fw.Protocol
+	SrcPort     uint16
+	DstPort     uint16
+	ICMPType    uint8
+	ICMPCode    uint8
+	Direction   fw.RuleDirection
+	PayloadSize int
+	TCPState    *TCPState
+}
+
+func (t *PacketTrace) AddResult(stage PacketStage, message string, allowed bool) {
+	t.Results = append(t.Results, TraceResult{
+		Timestamp: time.Now(),
+		Stage:     stage,
+		Message:   message,
+		Allowed:   allowed,
+	})
+}
+
+func (t *PacketTrace) AddResultWithForwarder(stage PacketStage, message string, allowed bool, action *ForwarderAction) {
+	t.Results = append(t.Results, TraceResult{
+		Timestamp:       time.Now(),
+		Stage:           stage,
+		Message:         message,
+		Allowed:         allowed,
+		ForwarderAction: action,
+	})
+}
+
+func (p *PacketBuilder) Build() ([]byte, error) {
+	ip := p.buildIPLayer()
+	pktLayers := []gopacket.SerializableLayer{ip}
+
+	transportLayer, err := p.buildTransportLayer(ip)
+	if err != nil {
+		return nil, err
+	}
+	pktLayers = append(pktLayers, transportLayer...)
+
+	if p.PayloadSize > 0 {
+		payload := make([]byte, p.PayloadSize)
+		pktLayers = append(pktLayers, gopacket.Payload(payload))
+	}
+
+	return serializePacket(pktLayers)
+}
+
+func (p *PacketBuilder) buildIPLayer() *layers.IPv4 {
+	return &layers.IPv4{
+		Version:  4,
+		TTL:      64,
+		Protocol: layers.IPProtocol(getIPProtocolNumber(p.Protocol)),
+		SrcIP:    p.SrcIP,
+		DstIP:    p.DstIP,
+	}
+}
+
+func (p *PacketBuilder) buildTransportLayer(ip *layers.IPv4) ([]gopacket.SerializableLayer, error) {
+	switch p.Protocol {
+	case "tcp":
+		return p.buildTCPLayer(ip)
+	case "udp":
+		return p.buildUDPLayer(ip)
+	case "icmp":
+		return p.buildICMPLayer()
+	default:
+		return nil, fmt.Errorf("unsupported protocol: %s", p.Protocol)
+	}
+}
+
+func (p *PacketBuilder) buildTCPLayer(ip *layers.IPv4) ([]gopacket.SerializableLayer, error) {
+	tcp := &layers.TCP{
+		SrcPort: layers.TCPPort(p.SrcPort),
+		DstPort: layers.TCPPort(p.DstPort),
+		Window:  65535,
+		SYN:     p.TCPState != nil && p.TCPState.SYN,
+		ACK:     p.TCPState != nil && p.TCPState.ACK,
+		FIN:     p.TCPState != nil && p.TCPState.FIN,
+		RST:     p.TCPState != nil && p.TCPState.RST,
+		PSH:     p.TCPState != nil && p.TCPState.PSH,
+		URG:     p.TCPState != nil && p.TCPState.URG,
+	}
+	if err := tcp.SetNetworkLayerForChecksum(ip); err != nil {
+		return nil, fmt.Errorf("set network layer for TCP checksum: %w", err)
+	}
+	return []gopacket.SerializableLayer{tcp}, nil
+}
+
+func (p *PacketBuilder) buildUDPLayer(ip *layers.IPv4) ([]gopacket.SerializableLayer, error) {
+	udp := &layers.UDP{
+		SrcPort: layers.UDPPort(p.SrcPort),
+		DstPort: layers.UDPPort(p.DstPort),
+	}
+	if err := udp.SetNetworkLayerForChecksum(ip); err != nil {
+		return nil, fmt.Errorf("set network layer for UDP checksum: %w", err)
+	}
+	return []gopacket.SerializableLayer{udp}, nil
+}
+
+func (p *PacketBuilder) buildICMPLayer() ([]gopacket.SerializableLayer, error) {
+	icmp := &layers.ICMPv4{
+		TypeCode: layers.CreateICMPv4TypeCode(p.ICMPType, p.ICMPCode),
+	}
+	if p.ICMPType == layers.ICMPv4TypeEchoRequest || p.ICMPType == layers.ICMPv4TypeEchoReply {
+		icmp.Id = uint16(1)
+		icmp.Seq = uint16(1)
+	}
+	return []gopacket.SerializableLayer{icmp}, nil
+}
+
+func serializePacket(layers []gopacket.SerializableLayer) ([]byte, error) {
+	buf := gopacket.NewSerializeBuffer()
+	opts := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+	if err := gopacket.SerializeLayers(buf, opts, layers...); err != nil {
+		return nil, fmt.Errorf("serialize packet: %w", err)
+	}
+	return buf.Bytes(), nil
+}
+
+func getIPProtocolNumber(protocol fw.Protocol) int {
+	switch protocol {
+	case fw.ProtocolTCP:
+		return int(layers.IPProtocolTCP)
+	case fw.ProtocolUDP:
+		return int(layers.IPProtocolUDP)
+	case fw.ProtocolICMP:
+		return int(layers.IPProtocolICMPv4)
+	default:
+		return 0
+	}
+}
+
+func (m *Manager) TracePacketFromBuilder(builder *PacketBuilder) (*PacketTrace, error) {
+	packetData, err := builder.Build()
+	if err != nil {
+		return nil, fmt.Errorf("build packet: %w", err)
+	}
+
+	return m.TracePacket(packetData, builder.Direction), nil
+}
+
+func (m *Manager) TracePacket(packetData []byte, direction fw.RuleDirection) *PacketTrace {
+
+	d := m.decoders.Get().(*decoder)
+	defer m.decoders.Put(d)
+
+	trace := &PacketTrace{Direction: direction}
+
+	// Initial packet decoding
+	if err := d.parser.DecodeLayers(packetData, &d.decoded); err != nil {
+		trace.AddResult(StageReceived, fmt.Sprintf("Failed to decode packet: %v", err), false)
+		return trace
+	}
+
+	// Extract base packet info
+	srcIP, dstIP := m.extractIPs(d)
+	trace.SourceIP = srcIP
+	trace.DestinationIP = dstIP
+
+	// Determine protocol and ports
+	switch d.decoded[1] {
+	case layers.LayerTypeTCP:
+		trace.Protocol = "TCP"
+		trace.SourcePort = uint16(d.tcp.SrcPort)
+		trace.DestinationPort = uint16(d.tcp.DstPort)
+	case layers.LayerTypeUDP:
+		trace.Protocol = "UDP"
+		trace.SourcePort = uint16(d.udp.SrcPort)
+		trace.DestinationPort = uint16(d.udp.DstPort)
+	case layers.LayerTypeICMPv4:
+		trace.Protocol = "ICMP"
+	}
+
+	trace.AddResult(StageReceived, fmt.Sprintf("Received %s packet: %s:%d -> %s:%d",
+		trace.Protocol, srcIP, trace.SourcePort, dstIP, trace.DestinationPort), true)
+
+	if direction == fw.RuleDirectionOUT {
+		return m.traceOutbound(packetData, trace)
+	}
+
+	return m.traceInbound(packetData, trace, d, srcIP, dstIP)
+}
+
+func (m *Manager) traceInbound(packetData []byte, trace *PacketTrace, d *decoder, srcIP net.IP, dstIP net.IP) *PacketTrace {
+	if m.stateful && m.handleConntrackState(trace, d, srcIP, dstIP) {
+		return trace
+	}
+
+	if m.handleLocalDelivery(trace, packetData, d, srcIP, dstIP) {
+		return trace
+	}
+
+	if !m.handleRouting(trace) {
+		return trace
+	}
+
+	if m.nativeRouter {
+		return m.handleNativeRouter(trace)
+	}
+
+	return m.handleRouteACLs(trace, d, srcIP, dstIP)
+}
+
+func (m *Manager) handleConntrackState(trace *PacketTrace, d *decoder, srcIP, dstIP net.IP) bool {
+	allowed := m.isValidTrackedConnection(d, srcIP, dstIP)
+	msg := "No existing connection found"
+	if allowed {
+		msg = m.buildConntrackStateMessage(d)
+		trace.AddResult(StageConntrack, msg, true)
+		trace.AddResult(StageCompleted, "Packet allowed by connection tracking", true)
+		return true
+	}
+	trace.AddResult(StageConntrack, msg, false)
+	return false
+}
+
+func (m *Manager) buildConntrackStateMessage(d *decoder) string {
+	msg := "Matched existing connection state"
+	switch d.decoded[1] {
+	case layers.LayerTypeTCP:
+		flags := getTCPFlags(&d.tcp)
+		msg += fmt.Sprintf(" (TCP Flags: SYN=%v ACK=%v RST=%v FIN=%v)",
+			flags&conntrack.TCPSyn != 0,
+			flags&conntrack.TCPAck != 0,
+			flags&conntrack.TCPRst != 0,
+			flags&conntrack.TCPFin != 0)
+	case layers.LayerTypeICMPv4:
+		msg += fmt.Sprintf(" (ICMP ID=%d, Seq=%d)", d.icmp4.Id, d.icmp4.Seq)
+	}
+	return msg
+}
+
+func (m *Manager) handleLocalDelivery(trace *PacketTrace, packetData []byte, d *decoder, srcIP, dstIP net.IP) bool {
+	if !m.localForwarding {
+		trace.AddResult(StageRouting, "Local forwarding disabled", false)
+		trace.AddResult(StageCompleted, "Packet dropped - local forwarding disabled", false)
+		return true
+	}
+
+	trace.AddResult(StageRouting, "Packet destined for local delivery", true)
+	blocked := m.peerACLsBlock(srcIP, packetData, m.incomingRules, d)
+
+	msg := "Allowed by peer ACL rules"
+	if blocked {
+		msg = "Blocked by peer ACL rules"
+	}
+	trace.AddResult(StagePeerACL, msg, !blocked)
+
+	if m.netstack {
+		m.addForwardingResult(trace, "proxy-local", "127.0.0.1", !blocked)
+	}
+
+	trace.AddResult(StageCompleted, msgProcessingCompleted, !blocked)
+	return true
+}
+
+func (m *Manager) handleRouting(trace *PacketTrace) bool {
+	if !m.routingEnabled {
+		trace.AddResult(StageRouting, "Routing disabled", false)
+		trace.AddResult(StageCompleted, "Packet dropped - routing disabled", false)
+		return false
+	}
+	trace.AddResult(StageRouting, "Routing enabled, checking ACLs", true)
+	return true
+}
+
+func (m *Manager) handleNativeRouter(trace *PacketTrace) *PacketTrace {
+	trace.AddResult(StageRouteACL, "Using native router, skipping ACL checks", true)
+	trace.AddResult(StageForwarding, "Forwarding via native router", true)
+	trace.AddResult(StageCompleted, msgProcessingCompleted, true)
+	return trace
+}
+
+func (m *Manager) handleRouteACLs(trace *PacketTrace, d *decoder, srcIP, dstIP net.IP) *PacketTrace {
+	proto := getProtocolFromPacket(d)
+	srcPort, dstPort := getPortsFromPacket(d)
+	allowed := m.routeACLsPass(srcIP, dstIP, proto, srcPort, dstPort)
+
+	msg := "Allowed by route ACLs"
+	if !allowed {
+		msg = "Blocked by route ACLs"
+	}
+	trace.AddResult(StageRouteACL, msg, allowed)
+
+	if allowed && m.forwarder != nil {
+		m.addForwardingResult(trace, "proxy-remote", fmt.Sprintf("%s:%d", dstIP, dstPort), true)
+	}
+
+	trace.AddResult(StageCompleted, msgProcessingCompleted, allowed)
+	return trace
+}
+
+func (m *Manager) addForwardingResult(trace *PacketTrace, action, remoteAddr string, allowed bool) {
+	fwdAction := &ForwarderAction{
+		Action:     action,
+		RemoteAddr: remoteAddr,
+	}
+	trace.AddResultWithForwarder(StageForwarding,
+		fmt.Sprintf("Forwarding to %s", fwdAction.Action), allowed, fwdAction)
+}
+
+func (m *Manager) traceOutbound(packetData []byte, trace *PacketTrace) *PacketTrace {
+	// will create or update the connection state
+	dropped := m.processOutgoingHooks(packetData)
+	if dropped {
+		trace.AddResult(StageCompleted, "Packet dropped by outgoing hook", false)
+	} else {
+		trace.AddResult(StageCompleted, "Packet allowed (outgoing)", true)
+	}
+	return trace
+}

client/firewall/uspfilter/uspfilter_test.go

@@ -3,21 +3,44 @@ package uspfilter
 import (
 	"fmt"
 	"net"
+	"sync"
 	"testing"
 	"time"
 
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
+	"github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/require"
+	wgdevice "golang.zx2c4.com/wireguard/device"
 
 	fw "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/conntrack"
+	"github.com/netbirdio/netbird/client/firewall/uspfilter/log"
 	"github.com/netbirdio/netbird/client/iface"
 	"github.com/netbirdio/netbird/client/iface/device"
 )
 
+var logger = log.NewFromLogrus(logrus.StandardLogger())
+
 type IFaceMock struct {
-	SetFilterFunc func(device.PacketFilter) error
-	AddressFunc   func() iface.WGAddress
+	SetFilterFunc   func(device.PacketFilter) error
+	AddressFunc     func() iface.WGAddress
+	GetWGDeviceFunc func() *wgdevice.Device
+	GetDeviceFunc   func() *device.FilteredDevice
+}
+
+func (i *IFaceMock) GetWGDevice() *wgdevice.Device {
+	if i.GetWGDeviceFunc == nil {
+		return nil
+	}
+	return i.GetWGDeviceFunc()
+}
+
+func (i *IFaceMock) GetDevice() *device.FilteredDevice {
+	if i.GetDeviceFunc == nil {
+		return nil
+	}
+	return i.GetDeviceFunc()
 }
 
 func (i *IFaceMock) SetFilter(iface device.PacketFilter) error {
@@ -39,7 +62,7 @@ func TestManagerCreate(t *testing.T) {
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
-	m, err := Create(ifaceMock)
+	m, err := Create(ifaceMock, false)
 	if err != nil {
 		t.Errorf("failed to create Manager: %v", err)
 		return
@@ -59,7 +82,7 @@ func TestManagerAddPeerFiltering(t *testing.T) {
 		},
 	}
 
-	m, err := Create(ifaceMock)
+	m, err := Create(ifaceMock, false)
 	if err != nil {
 		t.Errorf("failed to create Manager: %v", err)
 		return
@@ -67,12 +90,11 @@ func TestManagerAddPeerFiltering(t *testing.T) {
 
 	ip := net.ParseIP("192.168.1.1")
 	proto := fw.ProtocolTCP
-	port := &fw.Port{Values: []int{80}}
-	direction := fw.RuleDirectionOUT
+	port := &fw.Port{Values: []uint16{80}}
 	action := fw.ActionDrop
 	comment := "Test rule"
 
-	rule, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
+	rule, err := m.AddPeerFiltering(ip, proto, nil, port, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -94,7 +116,7 @@ func TestManagerDeleteRule(t *testing.T) {
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
-	m, err := Create(ifaceMock)
+	m, err := Create(ifaceMock, false)
 	if err != nil {
 		t.Errorf("failed to create Manager: %v", err)
 		return
@@ -102,38 +124,16 @@ func TestManagerDeleteRule(t *testing.T) {
 
 	ip := net.ParseIP("192.168.1.1")
 	proto := fw.ProtocolTCP
-	port := &fw.Port{Values: []int{80}}
-	direction := fw.RuleDirectionOUT
+	port := &fw.Port{Values: []uint16{80}}
 	action := fw.ActionDrop
-	comment := "Test rule"
+	comment := "Test rule 2"
 
-	rule, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
+	rule2, err := m.AddPeerFiltering(ip, proto, nil, port, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
 	}
 
-	ip = net.ParseIP("192.168.1.1")
-	proto = fw.ProtocolTCP
-	port = &fw.Port{Values: []int{80}}
-	direction = fw.RuleDirectionIN
-	action = fw.ActionDrop
-	comment = "Test rule 2"
-
-	rule2, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
-	if err != nil {
-		t.Errorf("failed to add filtering: %v", err)
-		return
-	}
-
-	for _, r := range rule {
-		err = m.DeletePeerRule(r)
-		if err != nil {
-			t.Errorf("failed to delete rule: %v", err)
-			return
-		}
-	}
-
 	for _, r := range rule2 {
 		if _, ok := m.incomingRules[ip.String()][r.GetRuleID()]; !ok {
 			t.Errorf("rule2 is not in the incomingRules")
@@ -185,14 +185,14 @@ func TestAddUDPPacketHook(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			manager := &Manager{
-				incomingRules: map[string]RuleSet{},
-				outgoingRules: map[string]RuleSet{},
-			}
+			manager, err := Create(&IFaceMock{
+				SetFilterFunc: func(device.PacketFilter) error { return nil },
+			}, false)
+			require.NoError(t, err)
 
 			manager.AddUDPPacketHook(tt.in, tt.ip, tt.dPort, tt.hook)
 
-			var addedRule Rule
+			var addedRule PeerRule
 			if tt.in {
 				if len(manager.incomingRules[tt.ip.String()]) != 1 {
 					t.Errorf("expected 1 incoming rule, got %d", len(manager.incomingRules))
@@ -215,18 +215,14 @@ func TestAddUDPPacketHook(t *testing.T) {
 				t.Errorf("expected ip %s, got %s", tt.ip, addedRule.ip)
 				return
 			}
-			if tt.dPort != addedRule.dPort {
-				t.Errorf("expected dPort %d, got %d", tt.dPort, addedRule.dPort)
+			if tt.dPort != addedRule.dPort.Values[0] {
+				t.Errorf("expected dPort %d, got %d", tt.dPort, addedRule.dPort.Values[0])
 				return
 			}
 			if layers.LayerTypeUDP != addedRule.protoLayer {
 				t.Errorf("expected protoLayer %s, got %s", layers.LayerTypeUDP, addedRule.protoLayer)
 				return
 			}
-			if tt.expDir != addedRule.direction {
-				t.Errorf("expected direction %d, got %d", tt.expDir, addedRule.direction)
-				return
-			}
 			if addedRule.udpHook == nil {
 				t.Errorf("expected udpHook to be set")
 				return
@@ -240,7 +236,7 @@ func TestManagerReset(t *testing.T) {
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
-	m, err := Create(ifaceMock)
+	m, err := Create(ifaceMock, false)
 	if err != nil {
 		t.Errorf("failed to create Manager: %v", err)
 		return
@@ -248,12 +244,11 @@ func TestManagerReset(t *testing.T) {
 
 	ip := net.ParseIP("192.168.1.1")
 	proto := fw.ProtocolTCP
-	port := &fw.Port{Values: []int{80}}
-	direction := fw.RuleDirectionOUT
+	port := &fw.Port{Values: []uint16{80}}
 	action := fw.ActionDrop
 	comment := "Test rule"
 
-	_, err = m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
+	_, err = m.AddPeerFiltering(ip, proto, nil, port, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -273,9 +268,18 @@ func TestManagerReset(t *testing.T) {
 func TestNotMatchByIP(t *testing.T) {
 	ifaceMock := &IFaceMock{
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("100.10.0.100"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("100.10.0.0"),
+					Mask: net.CIDRMask(16, 32),
+				},
+			}
+		},
 	}
 
-	m, err := Create(ifaceMock)
+	m, err := Create(ifaceMock, false)
 	if err != nil {
 		t.Errorf("failed to create Manager: %v", err)
 		return
@@ -287,11 +291,10 @@ func TestNotMatchByIP(t *testing.T) {
 
 	ip := net.ParseIP("0.0.0.0")
 	proto := fw.ProtocolUDP
-	direction := fw.RuleDirectionOUT
 	action := fw.ActionAccept
 	comment := "Test rule"
 
-	_, err = m.AddPeerFiltering(ip, proto, nil, nil, direction, action, "", comment)
+	_, err = m.AddPeerFiltering(ip, proto, nil, nil, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -313,7 +316,7 @@ func TestNotMatchByIP(t *testing.T) {
 		t.Errorf("failed to set network layer for checksum: %v", err)
 		return
 	}
-	payload := gopacket.Payload([]byte("test"))
+	payload := gopacket.Payload("test")
 
 	buf := gopacket.NewSerializeBuffer()
 	opts := gopacket.SerializeOptions{
@@ -325,7 +328,7 @@ func TestNotMatchByIP(t *testing.T) {
 		return
 	}
 
-	if m.dropFilter(buf.Bytes(), m.outgoingRules, false) {
+	if m.dropFilter(buf.Bytes()) {
 		t.Errorf("expected packet to be accepted")
 		return
 	}
@@ -344,10 +347,13 @@ func TestRemovePacketHook(t *testing.T) {
 	}
 
 	// creating manager instance
-	manager, err := Create(iface)
+	manager, err := Create(iface, false)
 	if err != nil {
 		t.Fatalf("Failed to create Manager: %s", err)
 	}
+	defer func() {
+		require.NoError(t, manager.Reset(nil))
+	}()
 
 	// Add a UDP packet hook
 	hookFunc := func(data []byte) bool { return true }
@@ -384,6 +390,88 @@ func TestRemovePacketHook(t *testing.T) {
 	}
 }
 
+func TestProcessOutgoingHooks(t *testing.T) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false)
+	require.NoError(t, err)
+
+	manager.wgNetwork = &net.IPNet{
+		IP:   net.ParseIP("100.10.0.0"),
+		Mask: net.CIDRMask(16, 32),
+	}
+	manager.udpTracker.Close()
+	manager.udpTracker = conntrack.NewUDPTracker(100*time.Millisecond, logger)
+	defer func() {
+		require.NoError(t, manager.Reset(nil))
+	}()
+
+	manager.decoders = sync.Pool{
+		New: func() any {
+			d := &decoder{
+				decoded: []gopacket.LayerType{},
+			}
+			d.parser = gopacket.NewDecodingLayerParser(
+				layers.LayerTypeIPv4,
+				&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+			)
+			d.parser.IgnoreUnsupported = true
+			return d
+		},
+	}
+
+	hookCalled := false
+	hookID := manager.AddUDPPacketHook(
+		false,
+		net.ParseIP("100.10.0.100"),
+		53,
+		func([]byte) bool {
+			hookCalled = true
+			return true
+		},
+	)
+	require.NotEmpty(t, hookID)
+
+	// Create test UDP packet
+	ipv4 := &layers.IPv4{
+		TTL:      64,
+		Version:  4,
+		SrcIP:    net.ParseIP("100.10.0.1"),
+		DstIP:    net.ParseIP("100.10.0.100"),
+		Protocol: layers.IPProtocolUDP,
+	}
+	udp := &layers.UDP{
+		SrcPort: 51334,
+		DstPort: 53,
+	}
+
+	err = udp.SetNetworkLayerForChecksum(ipv4)
+	require.NoError(t, err)
+	payload := gopacket.Payload("test")
+
+	buf := gopacket.NewSerializeBuffer()
+	opts := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+	err = gopacket.SerializeLayers(buf, opts, ipv4, udp, payload)
+	require.NoError(t, err)
+
+	// Test hook gets called
+	result := manager.processOutgoingHooks(buf.Bytes())
+	require.True(t, result)
+	require.True(t, hookCalled)
+
+	// Test non-UDP packet is ignored
+	ipv4.Protocol = layers.IPProtocolTCP
+	buf = gopacket.NewSerializeBuffer()
+	err = gopacket.SerializeLayers(buf, opts, ipv4)
+	require.NoError(t, err)
+
+	result = manager.processOutgoingHooks(buf.Bytes())
+	require.False(t, result)
+}
+
 func TestUSPFilterCreatePerformance(t *testing.T) {
 	for _, testMax := range []int{10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} {
 		t.Run(fmt.Sprintf("Testing %d rules", testMax), func(t *testing.T) {
@@ -391,7 +479,7 @@ func TestUSPFilterCreatePerformance(t *testing.T) {
 			ifaceMock := &IFaceMock{
 				SetFilterFunc: func(device.PacketFilter) error { return nil },
 			}
-			manager, err := Create(ifaceMock)
+			manager, err := Create(ifaceMock, false)
 			require.NoError(t, err)
 			time.Sleep(time.Second)
 
@@ -405,12 +493,8 @@ func TestUSPFilterCreatePerformance(t *testing.T) {
 			ip := net.ParseIP("10.20.0.100")
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
-				port := &fw.Port{Values: []int{1000 + i}}
-				if i%2 == 0 {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
-				} else {
-					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
-				}
+				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
+				_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.ActionAccept, "", "accept HTTP traffic")
 
 				require.NoError(t, err, "failed to add rule")
 			}
@@ -418,3 +502,213 @@ func TestUSPFilterCreatePerformance(t *testing.T) {
 		})
 	}
 }
+
+func TestStatefulFirewall_UDPTracking(t *testing.T) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false)
+	require.NoError(t, err)
+
+	manager.wgNetwork = &net.IPNet{
+		IP:   net.ParseIP("100.10.0.0"),
+		Mask: net.CIDRMask(16, 32),
+	}
+
+	manager.udpTracker.Close() // Close the existing tracker
+	manager.udpTracker = conntrack.NewUDPTracker(200*time.Millisecond, logger)
+	manager.decoders = sync.Pool{
+		New: func() any {
+			d := &decoder{
+				decoded: []gopacket.LayerType{},
+			}
+			d.parser = gopacket.NewDecodingLayerParser(
+				layers.LayerTypeIPv4,
+				&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+			)
+			d.parser.IgnoreUnsupported = true
+			return d
+		},
+	}
+	defer func() {
+		require.NoError(t, manager.Reset(nil))
+	}()
+
+	// Set up packet parameters
+	srcIP := net.ParseIP("100.10.0.1")
+	dstIP := net.ParseIP("100.10.0.100")
+	srcPort := uint16(51334)
+	dstPort := uint16(53)
+
+	// Create outbound packet
+	outboundIPv4 := &layers.IPv4{
+		TTL:      64,
+		Version:  4,
+		SrcIP:    srcIP,
+		DstIP:    dstIP,
+		Protocol: layers.IPProtocolUDP,
+	}
+	outboundUDP := &layers.UDP{
+		SrcPort: layers.UDPPort(srcPort),
+		DstPort: layers.UDPPort(dstPort),
+	}
+
+	err = outboundUDP.SetNetworkLayerForChecksum(outboundIPv4)
+	require.NoError(t, err)
+
+	outboundBuf := gopacket.NewSerializeBuffer()
+	opts := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+
+	err = gopacket.SerializeLayers(outboundBuf, opts,
+		outboundIPv4,
+		outboundUDP,
+		gopacket.Payload("test"),
+	)
+	require.NoError(t, err)
+
+	// Process outbound packet and verify connection tracking
+	drop := manager.DropOutgoing(outboundBuf.Bytes())
+	require.False(t, drop, "Initial outbound packet should not be dropped")
+
+	// Verify connection was tracked
+	conn, exists := manager.udpTracker.GetConnection(srcIP, srcPort, dstIP, dstPort)
+
+	require.True(t, exists, "Connection should be tracked after outbound packet")
+	require.True(t, conntrack.ValidateIPs(conntrack.MakeIPAddr(srcIP), conn.SourceIP), "Source IP should match")
+	require.True(t, conntrack.ValidateIPs(conntrack.MakeIPAddr(dstIP), conn.DestIP), "Destination IP should match")
+	require.Equal(t, srcPort, conn.SourcePort, "Source port should match")
+	require.Equal(t, dstPort, conn.DestPort, "Destination port should match")
+
+	// Create valid inbound response packet
+	inboundIPv4 := &layers.IPv4{
+		TTL:      64,
+		Version:  4,
+		SrcIP:    dstIP, // Original destination is now source
+		DstIP:    srcIP, // Original source is now destination
+		Protocol: layers.IPProtocolUDP,
+	}
+	inboundUDP := &layers.UDP{
+		SrcPort: layers.UDPPort(dstPort), // Original destination port is now source
+		DstPort: layers.UDPPort(srcPort), // Original source port is now destination
+	}
+
+	err = inboundUDP.SetNetworkLayerForChecksum(inboundIPv4)
+	require.NoError(t, err)
+
+	inboundBuf := gopacket.NewSerializeBuffer()
+	err = gopacket.SerializeLayers(inboundBuf, opts,
+		inboundIPv4,
+		inboundUDP,
+		gopacket.Payload("response"),
+	)
+	require.NoError(t, err)
+	// Test roundtrip response handling over time
+	checkPoints := []struct {
+		sleep       time.Duration
+		shouldAllow bool
+		description string
+	}{
+		{
+			sleep:       0,
+			shouldAllow: true,
+			description: "Immediate response should be allowed",
+		},
+		{
+			sleep:       50 * time.Millisecond,
+			shouldAllow: true,
+			description: "Response within timeout should be allowed",
+		},
+		{
+			sleep:       100 * time.Millisecond,
+			shouldAllow: true,
+			description: "Response at half timeout should be allowed",
+		},
+		{
+			// tracker hasn't updated conn for 250ms -> greater than 200ms timeout
+			sleep:       250 * time.Millisecond,
+			shouldAllow: false,
+			description: "Response after timeout should be dropped",
+		},
+	}
+
+	for _, cp := range checkPoints {
+		time.Sleep(cp.sleep)
+
+		drop = manager.dropFilter(inboundBuf.Bytes())
+		require.Equal(t, cp.shouldAllow, !drop, cp.description)
+
+		// If the connection should still be valid, verify it exists
+		if cp.shouldAllow {
+			conn, exists := manager.udpTracker.GetConnection(srcIP, srcPort, dstIP, dstPort)
+			require.True(t, exists, "Connection should still exist during valid window")
+			require.True(t, time.Since(conn.GetLastSeen()) < manager.udpTracker.Timeout(),
+				"LastSeen should be updated for valid responses")
+		}
+	}
+
+	// Test invalid response packets (while connection is expired)
+	invalidCases := []struct {
+		name        string
+		modifyFunc  func(*layers.IPv4, *layers.UDP)
+		description string
+	}{
+		{
+			name: "wrong source IP",
+			modifyFunc: func(ip *layers.IPv4, udp *layers.UDP) {
+				ip.SrcIP = net.ParseIP("100.10.0.101")
+			},
+			description: "Response from wrong IP should be dropped",
+		},
+		{
+			name: "wrong destination IP",
+			modifyFunc: func(ip *layers.IPv4, udp *layers.UDP) {
+				ip.DstIP = net.ParseIP("100.10.0.2")
+			},
+			description: "Response to wrong IP should be dropped",
+		},
+		{
+			name: "wrong source port",
+			modifyFunc: func(ip *layers.IPv4, udp *layers.UDP) {
+				udp.SrcPort = 54
+			},
+			description: "Response from wrong port should be dropped",
+		},
+		{
+			name: "wrong destination port",
+			modifyFunc: func(ip *layers.IPv4, udp *layers.UDP) {
+				udp.DstPort = 51335
+			},
+			description: "Response to wrong port should be dropped",
+		},
+	}
+
+	// Create a new outbound connection for invalid tests
+	drop = manager.processOutgoingHooks(outboundBuf.Bytes())
+	require.False(t, drop, "Second outbound packet should not be dropped")
+
+	for _, tc := range invalidCases {
+		t.Run(tc.name, func(t *testing.T) {
+			testIPv4 := *inboundIPv4
+			testUDP := *inboundUDP
+
+			tc.modifyFunc(&testIPv4, &testUDP)
+
+			err = testUDP.SetNetworkLayerForChecksum(&testIPv4)
+			require.NoError(t, err)
+
+			testBuf := gopacket.NewSerializeBuffer()
+			err = gopacket.SerializeLayers(testBuf, opts,
+				&testIPv4,
+				&testUDP,
+				gopacket.Payload("response"),
+			)
+			require.NoError(t, err)
+
+			// Verify the invalid packet is dropped
+			drop = manager.dropFilter(testBuf.Bytes())
+			require.True(t, drop, tc.description)
+		})
+	}
+}

client/iface/bind/control_android.go

@@ -0,0 +1,12 @@
+package bind
+
+import (
+	wireguard "golang.zx2c4.com/wireguard/conn"
+
+	nbnet "github.com/netbirdio/netbird/util/net"
+)
+
+func init() {
+	// ControlFns is not thread safe and should only be modified during init.
+	*wireguard.ControlFns = append(*wireguard.ControlFns, nbnet.ControlProtectSocket)
+}

client/iface/bind/udp_mux.go

@@ -162,12 +162,13 @@ func NewUDPMuxDefault(params UDPMuxParams) *UDPMuxDefault {
 		params.Logger.Warn("UDPMuxDefault should not listening on unspecified address, use NewMultiUDPMuxFromPort instead")
 		var networks []ice.NetworkType
 		switch {
-		case addr.IP.To4() != nil:
-			networks = []ice.NetworkType{ice.NetworkTypeUDP4}
 
 		case addr.IP.To16() != nil:
 			networks = []ice.NetworkType{ice.NetworkTypeUDP4, ice.NetworkTypeUDP6}
 
+		case addr.IP.To4() != nil:
+			networks = []ice.NetworkType{ice.NetworkTypeUDP4}
+
 		default:
 			params.Logger.Errorf("LocalAddr expected IPV4 or IPV6, got %T", params.UDPConn.LocalAddr())
 		}

client/iface/configurer/name.go

@@ -2,5 +2,5 @@
 
 package configurer
 
-// WgInterfaceDefault is a default interface name of Wiretrustee
+// WgInterfaceDefault is a default interface name of Netbird
 const WgInterfaceDefault = "wt0"

client/iface/configurer/name_darwin.go

@@ -2,5 +2,5 @@
 
 package configurer
 
-// WgInterfaceDefault is a default interface name of Wiretrustee
+// WgInterfaceDefault is a default interface name of Netbird
 const WgInterfaceDefault = "utun100"

client/iface/device.go

@@ -3,6 +3,8 @@
 package iface
 
 import (
+	wgdevice "golang.zx2c4.com/wireguard/device"
+
 	"github.com/netbirdio/netbird/client/iface/bind"
 	"github.com/netbirdio/netbird/client/iface/device"
 )
@@ -15,4 +17,5 @@ type WGTunDevice interface {
 	DeviceName() string
 	Close() error
 	FilteredDevice() *device.FilteredDevice
+	Device() *wgdevice.Device
 }

client/iface/device/device_android.go

@@ -63,7 +63,7 @@ func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string
 	t.filteredDevice = newDeviceFilter(tunDevice)
 
 	log.Debugf("attaching to interface %v", name)
-	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[wiretrustee] "))
+	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[netbird] "))
 	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()

client/iface/device/device_darwin.go

@@ -117,6 +117,11 @@ func (t *TunDevice) FilteredDevice() *FilteredDevice {
 	return t.filteredDevice
 }
 
+// Device returns the wireguard device
+func (t *TunDevice) Device() *device.Device {
+	return t.device
+}
+
 // assignAddr Adds IP address to the tunnel interface and network route based on the range provided
 func (t *TunDevice) assignAddr() error {
 	cmd := exec.Command("ifconfig", t.name, "inet", t.address.IP.String(), t.address.IP.String())

client/iface/device/device_ios.go

@@ -64,7 +64,7 @@ func (t *TunDevice) Create() (WGConfigurer, error) {
 
 	t.filteredDevice = newDeviceFilter(tunDevice)
 	log.Debug("Attaching to interface")
-	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[wiretrustee] "))
+	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[netbird] "))
 	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()

client/iface/device/device_kernel_unix.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/pion/transport/v3"
 	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/device"
 
 	"github.com/netbirdio/netbird/client/iface/bind"
 	"github.com/netbirdio/netbird/client/iface/configurer"
@@ -33,8 +34,6 @@ type TunKernelDevice struct {
 }
 
 func NewKernelDevice(name string, address WGAddress, wgPort int, key string, mtu int, transportNet transport.Net) *TunKernelDevice {
-	checkUser()
-
 	ctx, cancel := context.WithCancel(context.Background())
 	return &TunKernelDevice{
 		ctx:          ctx,
@@ -153,6 +152,11 @@ func (t *TunKernelDevice) DeviceName() string {
 	return t.name
 }
 
+// Device returns the wireguard device, not applicable for kernel devices
+func (t *TunKernelDevice) Device() *device.Device {
+	return nil
+}
+
 func (t *TunKernelDevice) FilteredDevice() *FilteredDevice {
 	return nil
 }

client/iface/device/device_netstack.go

@@ -117,3 +117,8 @@ func (t *TunNetstackDevice) DeviceName() string {
 func (t *TunNetstackDevice) FilteredDevice() *FilteredDevice {
 	return t.filteredDevice
 }
+
+// Device returns the wireguard device
+func (t *TunNetstackDevice) Device() *device.Device {
+	return t.device
+}

client/iface/device/device_usp_unix.go

@@ -4,8 +4,6 @@ package device
 
 import (
 	"fmt"
-	"os"
-	"runtime"
 
 	log "github.com/sirupsen/logrus"
 	"golang.zx2c4.com/wireguard/device"
@@ -32,8 +30,6 @@ type USPDevice struct {
 func NewUSPDevice(name string, address WGAddress, port int, key string, mtu int, iceBind *bind.ICEBind) *USPDevice {
 	log.Infof("using userspace bind mode")
 
-	checkUser()
-
 	return &USPDevice{
 		name:    name,
 		address: address,
@@ -128,18 +124,14 @@ func (t *USPDevice) FilteredDevice() *FilteredDevice {
 	return t.filteredDevice
 }
 
+// Device returns the wireguard device
+func (t *USPDevice) Device() *device.Device {
+	return t.device
+}
+
 // assignAddr Adds IP address to the tunnel interface
 func (t *USPDevice) assignAddr() error {
 	link := newWGLink(t.name)
 
 	return link.assignAddr(t.address)
 }
-
-func checkUser() {
-	if runtime.GOOS == "freebsd" {
-		euid := os.Geteuid()
-		if euid != 0 {
-			log.Warn("newTunUSPDevice: on netbird must run as root to be able to assign address to the tun interface with ifconfig")
-		}
-	}
-}

client/iface/device/device_windows.go

@@ -150,6 +150,11 @@ func (t *TunDevice) FilteredDevice() *FilteredDevice {
 	return t.filteredDevice
 }
 
+// Device returns the wireguard device
+func (t *TunDevice) Device() *device.Device {
+	return t.device
+}
+
 func (t *TunDevice) GetInterfaceGUIDString() (string, error) {
 	if t.nativeTunDevice == nil {
 		return "", fmt.Errorf("interface has not been initialized yet")

client/iface/device/kernel_module_linux.go

@@ -27,14 +27,14 @@ import (
 type status int
 
 const (
-	defaultModuleDir        = "/lib/modules"
-	unknown          status = iota
-	unloaded
-	unloading
-	loading
-	live
-	inuse
-	envDisableWireGuardKernel = "NB_WG_KERNEL_DISABLED"
+	unknown                   status = 1
+	unloaded                  status = 2
+	unloading                 status = 3
+	loading                   status = 4
+	live                      status = 5
+	inuse                     status = 6
+	defaultModuleDir                 = "/lib/modules"
+	envDisableWireGuardKernel        = "NB_WG_KERNEL_DISABLED"
 )
 
 type module struct {

client/iface/device_android.go

@@ -1,6 +1,8 @@
 package iface
 
 import (
+	wgdevice "golang.zx2c4.com/wireguard/device"
+
 	"github.com/netbirdio/netbird/client/iface/bind"
 	"github.com/netbirdio/netbird/client/iface/device"
 )
@@ -13,4 +15,5 @@ type WGTunDevice interface {
 	DeviceName() string
 	Close() error
 	FilteredDevice() *device.FilteredDevice
+	Device() *wgdevice.Device
 }

client/iface/freebsd/link.go

@@ -203,6 +203,11 @@ func (l *Link) setAddr(ip, netmask string) error {
 		return fmt.Errorf("set interface addr: %w", err)
 	}
 
+	cmd = exec.Command("ifconfig", l.name, "inet6", "fe80::/64")
+	if out, err := cmd.CombinedOutput(); err != nil {
+		log.Debugf("adding address command '%v' failed with output: %s", cmd.String(), out)
+	}
+
 	return nil
 }
 

client/iface/iface.go

@@ -11,6 +11,8 @@ import (
 	log "github.com/sirupsen/logrus"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
+	wgdevice "golang.zx2c4.com/wireguard/device"
+
 	"github.com/netbirdio/netbird/client/errors"
 	"github.com/netbirdio/netbird/client/iface/bind"
 	"github.com/netbirdio/netbird/client/iface/configurer"
@@ -203,6 +205,11 @@ func (w *WGIface) GetDevice() *device.FilteredDevice {
 	return w.tun.FilteredDevice()
 }
 
+// GetWGDevice returns the WireGuard device
+func (w *WGIface) GetWGDevice() *wgdevice.Device {
+	return w.tun.Device()
+}
+
 // GetStats returns the last handshake time, rx and tx bytes for the given peer
 func (w *WGIface) GetStats(peerKey string) (configurer.WGStats, error) {
 	return w.configurer.GetStats(peerKey)

client/iface/iface_moc.go

@@ -4,6 +4,7 @@ import (
 	"net"
 	"time"
 
+	wgdevice "golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
 	"github.com/netbirdio/netbird/client/iface/bind"
@@ -29,6 +30,7 @@ type MockWGIface struct {
 	SetFilterFunc              func(filter device.PacketFilter) error
 	GetFilterFunc              func() device.PacketFilter
 	GetDeviceFunc              func() *device.FilteredDevice
+	GetWGDeviceFunc            func() *wgdevice.Device
 	GetStatsFunc               func(peerKey string) (configurer.WGStats, error)
 	GetInterfaceGUIDStringFunc func() (string, error)
 	GetProxyFunc               func() wgproxy.Proxy
@@ -102,11 +104,14 @@ func (m *MockWGIface) GetDevice() *device.FilteredDevice {
 	return m.GetDeviceFunc()
 }
 
+func (m *MockWGIface) GetWGDevice() *wgdevice.Device {
+	return m.GetWGDeviceFunc()
+}
+
 func (m *MockWGIface) GetStats(peerKey string) (configurer.WGStats, error) {
 	return m.GetStatsFunc(peerKey)
 }
 
 func (m *MockWGIface) GetProxy() wgproxy.Proxy {
-	//TODO implement me
-	panic("implement me")
+	return m.GetProxyFunc()
 }

client/iface/iwginterface.go

@@ -6,6 +6,7 @@ import (
 	"net"
 	"time"
 
+	wgdevice "golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
 	"github.com/netbirdio/netbird/client/iface/bind"
@@ -32,5 +33,6 @@ type IWGIface interface {
 	SetFilter(filter device.PacketFilter) error
 	GetFilter() device.PacketFilter
 	GetDevice() *device.FilteredDevice
+	GetWGDevice() *wgdevice.Device
 	GetStats(peerKey string) (configurer.WGStats, error)
 }

client/iface/iwginterface_windows.go

@@ -4,6 +4,7 @@ import (
 	"net"
 	"time"
 
+	wgdevice "golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
 	"github.com/netbirdio/netbird/client/iface/bind"
@@ -30,6 +31,7 @@ type IWGIface interface {
 	SetFilter(filter device.PacketFilter) error
 	GetFilter() device.PacketFilter
 	GetDevice() *device.FilteredDevice
+	GetWGDevice() *wgdevice.Device
 	GetStats(peerKey string) (configurer.WGStats, error)
 	GetInterfaceGUIDString() (string, error)
 }

client/iface/netstack/env.go

@@ -15,6 +15,10 @@ func IsEnabled() bool {
 
 func ListenAddr() string {
 	sPort := os.Getenv("NB_SOCKS5_LISTENER_PORT")
+	if sPort == "" {
+		return listenAddr(DefaultSocks5Port)
+	}
+
 	port, err := strconv.Atoi(sPort)
 	if err != nil {
 		log.Warnf("invalid socks5 listener port, unable to convert it to int, falling back to default: %d", DefaultSocks5Port)

client/internal/acl/manager.go

@@ -151,7 +151,7 @@ func (d *DefaultManager) applyPeerACLs(networkMap *mgmProto.NetworkMap) {
 			d.rollBack(newRulePairs)
 			break
 		}
-		if len(rules) > 0 {
+		if len(rulePair) > 0 {
 			d.peerRulesPairs[pairID] = rulePair
 			newRulePairs[pairID] = rulePair
 		}
@@ -268,13 +268,16 @@ func (d *DefaultManager) protoRuleToFirewallRule(
 	}
 
 	var port *firewall.Port
-	if r.Port != "" {
+	if !portInfoEmpty(r.PortInfo) {
+		port = convertPortInfo(r.PortInfo)
+	} else if r.Port != "" {
+		// old version of management, single port
 		value, err := strconv.Atoi(r.Port)
 		if err != nil {
-			return "", nil, fmt.Errorf("invalid port, skipping firewall rule")
+			return "", nil, fmt.Errorf("invalid port: %w", err)
 		}
 		port = &firewall.Port{
-			Values: []int{value},
+			Values: []uint16{uint16(value)},
 		}
 	}
 
@@ -288,6 +291,8 @@ func (d *DefaultManager) protoRuleToFirewallRule(
 	case mgmProto.RuleDirection_IN:
 		rules, err = d.addInRules(ip, protocol, port, action, ipsetName, "")
 	case mgmProto.RuleDirection_OUT:
+		// TODO: Remove this soon. Outbound rules are obsolete.
+		// We only maintain this for return traffic (inbound dir) which is now handled by the stateful firewall already
 		rules, err = d.addOutRules(ip, protocol, port, action, ipsetName, "")
 	default:
 		return "", nil, fmt.Errorf("invalid direction, skipping firewall rule")
@@ -300,6 +305,22 @@ func (d *DefaultManager) protoRuleToFirewallRule(
 	return ruleID, rules, nil
 }
 
+func portInfoEmpty(portInfo *mgmProto.PortInfo) bool {
+	if portInfo == nil {
+		return true
+	}
+
+	switch portInfo.GetPortSelection().(type) {
+	case *mgmProto.PortInfo_Port:
+		return portInfo.GetPort() == 0
+	case *mgmProto.PortInfo_Range_:
+		r := portInfo.GetRange()
+		return r == nil || r.Start == 0 || r.End == 0
+	default:
+		return true
+	}
+}
+
 func (d *DefaultManager) addInRules(
 	ip net.IP,
 	protocol firewall.Protocol,
@@ -308,25 +329,12 @@ func (d *DefaultManager) addInRules(
 	ipsetName string,
 	comment string,
 ) ([]firewall.Rule, error) {
-	var rules []firewall.Rule
-	rule, err := d.firewall.AddPeerFiltering(
-		ip, protocol, nil, port, firewall.RuleDirectionIN, action, ipsetName, comment)
+	rule, err := d.firewall.AddPeerFiltering(ip, protocol, nil, port, action, ipsetName, comment)
 	if err != nil {
-		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
-	}
-	rules = append(rules, rule...)
-
-	if shouldSkipInvertedRule(protocol, port) {
-		return rules, nil
+		return nil, fmt.Errorf("add firewall rule: %w", err)
 	}
 
-	rule, err = d.firewall.AddPeerFiltering(
-		ip, protocol, port, nil, firewall.RuleDirectionOUT, action, ipsetName, comment)
-	if err != nil {
-		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
-	}
-
-	return append(rules, rule...), nil
+	return rule, nil
 }
 
 func (d *DefaultManager) addOutRules(
@@ -337,25 +345,16 @@ func (d *DefaultManager) addOutRules(
 	ipsetName string,
 	comment string,
 ) ([]firewall.Rule, error) {
-	var rules []firewall.Rule
-	rule, err := d.firewall.AddPeerFiltering(
-		ip, protocol, nil, port, firewall.RuleDirectionOUT, action, ipsetName, comment)
-	if err != nil {
-		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
-	}
-	rules = append(rules, rule...)
-
 	if shouldSkipInvertedRule(protocol, port) {
-		return rules, nil
+		return nil, nil
 	}
 
-	rule, err = d.firewall.AddPeerFiltering(
-		ip, protocol, port, nil, firewall.RuleDirectionIN, action, ipsetName, comment)
+	rule, err := d.firewall.AddPeerFiltering(ip, protocol, port, nil, action, ipsetName, comment)
 	if err != nil {
-		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
+		return nil, fmt.Errorf("add firewall rule: %w", err)
 	}
 
-	return append(rules, rule...), nil
+	return rule, nil
 }
 
 // getPeerRuleID() returns unique ID for the rule based on its parameters.
@@ -508,7 +507,7 @@ func (d *DefaultManager) squashAcceptRules(
 
 // getRuleGroupingSelector takes all rule properties except IP address to build selector
 func (d *DefaultManager) getRuleGroupingSelector(rule *mgmProto.FirewallRule) string {
-	return fmt.Sprintf("%v:%v:%v:%s", strconv.Itoa(int(rule.Direction)), rule.Action, rule.Protocol, rule.Port)
+	return fmt.Sprintf("%v:%v:%v:%s:%v", strconv.Itoa(int(rule.Direction)), rule.Action, rule.Protocol, rule.Port, rule.PortInfo)
 }
 
 func (d *DefaultManager) rollBack(newRulePairs map[id.RuleID][]firewall.Rule) {
@@ -559,14 +558,14 @@ func convertPortInfo(portInfo *mgmProto.PortInfo) *firewall.Port {
 
 	if portInfo.GetPort() != 0 {
 		return &firewall.Port{
-			Values: []int{int(portInfo.GetPort())},
+			Values: []uint16{uint16(int(portInfo.GetPort()))},
 		}
 	}
 
 	if portInfo.GetRange() != nil {
 		return &firewall.Port{
 			IsRange: true,
-			Values:  []int{int(portInfo.GetRange().Start), int(portInfo.GetRange().End)},
+			Values:  []uint16{uint16(portInfo.GetRange().Start), uint16(portInfo.GetRange().End)},
 		}
 	}
 

client/internal/acl/manager_test.go

@@ -49,9 +49,10 @@ func TestDefaultManager(t *testing.T) {
 		IP:      ip,
 		Network: network,
 	}).AnyTimes()
+	ifaceMock.EXPECT().GetWGDevice().Return(nil).AnyTimes()
 
 	// we receive one rule from the management so for testing purposes ignore it
-	fw, err := firewall.NewFirewall(ifaceMock, nil)
+	fw, err := firewall.NewFirewall(ifaceMock, nil, false)
 	if err != nil {
 		t.Errorf("create firewall: %v", err)
 		return
@@ -119,8 +120,8 @@ func TestDefaultManager(t *testing.T) {
 
 		networkMap.FirewallRulesIsEmpty = false
 		acl.ApplyFiltering(networkMap)
-		if len(acl.peerRulesPairs) != 2 {
-			t.Errorf("rules should contain 2 rules if FirewallRulesIsEmpty is not set, got: %v", len(acl.peerRulesPairs))
+		if len(acl.peerRulesPairs) != 1 {
+			t.Errorf("rules should contain 1 rules if FirewallRulesIsEmpty is not set, got: %v", len(acl.peerRulesPairs))
 			return
 		}
 	})
@@ -342,9 +343,10 @@ func TestDefaultManagerEnableSSHRules(t *testing.T) {
 		IP:      ip,
 		Network: network,
 	}).AnyTimes()
+	ifaceMock.EXPECT().GetWGDevice().Return(nil).AnyTimes()
 
 	// we receive one rule from the management so for testing purposes ignore it
-	fw, err := firewall.NewFirewall(ifaceMock, nil)
+	fw, err := firewall.NewFirewall(ifaceMock, nil, false)
 	if err != nil {
 		t.Errorf("create firewall: %v", err)
 		return
@@ -356,8 +358,8 @@ func TestDefaultManagerEnableSSHRules(t *testing.T) {
 
 	acl.ApplyFiltering(networkMap)
 
-	if len(acl.peerRulesPairs) != 4 {
-		t.Errorf("expect 4 rules (last must be SSH), got: %d", len(acl.peerRulesPairs))
+	if len(acl.peerRulesPairs) != 3 {
+		t.Errorf("expect 3 rules (last must be SSH), got: %d", len(acl.peerRulesPairs))
 		return
 	}
 }