idp dex fix

client/internal/engine.go

@@ -61,9 +61,11 @@ import (
 	cProto "github.com/netbirdio/netbird/client/proto"
 	"github.com/netbirdio/netbird/client/system"
 	nbdns "github.com/netbirdio/netbird/dns"
+	"github.com/netbirdio/netbird/management/server/types"
 	"github.com/netbirdio/netbird/route"
 	mgm "github.com/netbirdio/netbird/shared/management/client"
 	"github.com/netbirdio/netbird/shared/management/domain"
+	nbnetworkmap "github.com/netbirdio/netbird/shared/management/networkmap"
 	mgmProto "github.com/netbirdio/netbird/shared/management/proto"
 	"github.com/netbirdio/netbird/shared/netiputil"
 	auth "github.com/netbirdio/netbird/shared/relay/auth/hmac"
@@ -202,6 +204,13 @@ type Engine struct {
 	// networkSerial is the latest CurrentSerial (state ID) of the network sent by the Management service
 	networkSerial uint64
 
+	// latestComponents is the most-recent NetworkMapComponents decoded from
+	// a NetworkMapEnvelope (capability=3 peers only). Held alongside the
+	// NetworkMap that Calculate() produced from it so Step 3 incremental
+	// updates have a base to apply changes against. nil for legacy-format
+	// peers. Guarded by syncMsgMux.
+	latestComponents *types.NetworkMapComponents
+
 	networkMonitor *networkmonitor.NetworkMonitor
 
 	sshServer sshServer
@@ -865,8 +874,12 @@ func (e *Engine) handleSync(update *mgmProto.SyncResponse) error {
 		return e.ctx.Err()
 	}
 
-	if update.NetworkMap != nil && update.NetworkMap.PeerConfig != nil {
-		e.handleAutoUpdateVersion(update.NetworkMap.PeerConfig.AutoUpdate)
+	// Envelope sync responses carry PeerConfig at the top level; legacy
+	// NetworkMap syncs carry it under NetworkMap.PeerConfig.
+	if pc := update.GetPeerConfig(); pc != nil {
+		e.handleAutoUpdateVersion(pc.GetAutoUpdate())
+	} else if nm := update.GetNetworkMap(); nm != nil && nm.GetPeerConfig() != nil {
+		e.handleAutoUpdateVersion(nm.GetPeerConfig().GetAutoUpdate())
 	}
 
 	if update.GetNetbirdConfig() != nil {
@@ -907,11 +920,45 @@ func (e *Engine) handleSync(update *mgmProto.SyncResponse) error {
 		return err
 	}
 
-	nm := update.GetNetworkMap()
+	var (
+		nm         *mgmProto.NetworkMap
+		components *types.NetworkMapComponents
+	)
+	if envelope := update.GetNetworkMapEnvelope(); envelope != nil {
+		// Components-format peer: decode the envelope back to typed
+		// components, run Calculate() locally, and convert to the wire
+		// NetworkMap shape the rest of the engine consumes. Components are
+		// retained so future incremental updates (Step 3) can apply deltas
+		// instead of doing a full reconstruction.
+		localKey := e.config.WgPrivateKey.PublicKey().String()
+		dnsName := ""
+		if pc := update.GetPeerConfig(); pc != nil {
+			// PeerConfig.Fqdn = "<dns_label>.<dns_domain>" — extract the
+			// shared domain by stripping the peer's own label prefix. Falls
+			// back to empty if the FQDN doesn't have the expected shape.
+			dnsName = extractDNSDomainFromFQDN(pc.GetFqdn())
+		}
+		result, err := nbnetworkmap.EnvelopeToNetworkMap(e.ctx, envelope, localKey, dnsName)
+		if err != nil {
+			return fmt.Errorf("decode network map envelope: %w", err)
+		}
+		nm = result.NetworkMap
+		components = result.Components
+	} else {
+		nm = update.GetNetworkMap()
+	}
 	if nm == nil {
 		return nil
 	}
 
+	// Only retain the components view when the server sent the envelope
+	// path. A legacy proto.NetworkMap means components == nil; writing it
+	// here would clobber a previously-cached snapshot, breaking the Step 3
+	// incremental-delta base on a future envelope sync.
+	if components != nil {
+		e.latestComponents = components
+	}
+
 	// Persist sync response under the dedicated lock (syncRespMux), not under syncMsgMux.
 	// Read the storage-enabled flag under the syncRespMux too.
 	e.syncRespMux.RLock()
@@ -937,6 +984,19 @@ func (e *Engine) handleSync(update *mgmProto.SyncResponse) error {
 	return nil
 }
 
+// extractDNSDomainFromFQDN returns the trailing dotted domain part of the
+// receiving peer's FQDN — the same value the management server fills as
+// dnsName when it builds the legacy NetworkMap. "peer42.netbird.cloud" →
+// "netbird.cloud". An empty string is returned for unrecognized formats.
+func extractDNSDomainFromFQDN(fqdn string) string {
+	for i := 0; i < len(fqdn); i++ {
+		if fqdn[i] == '.' && i+1 < len(fqdn) {
+			return fqdn[i+1:]
+		}
+	}
+	return ""
+}
+
 func (e *Engine) handleRelayUpdate(update *mgmProto.RelayConfig) error {
 	if update != nil {
 		// when we receive token we expect valid address list too

dns/nameserver.go

@@ -53,6 +53,9 @@ type NameServerGroup struct {
 	ID string `gorm:"primaryKey"`
 	// AccountID is a reference to Account that this object belongs
 	AccountID string `gorm:"index"`
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_nameserver_groups_account_seq_id;not null;default:0"`
 	// Name group name
 	Name string
 	// Description group description

idp/dex/config.go

@@ -308,7 +308,7 @@ func (s *Storage) OpenStorage(logger *slog.Logger) (storage.Storage, error) {
 		if file == "" {
 			return nil, fmt.Errorf("sqlite3 storage requires 'file' config")
 		}
-		return (&sql.SQLite3{File: file}).Open(logger)
+		return newSQLite3(file).Open(logger)
 	case "postgres":
 		dsn, _ := s.Config["dsn"].(string)
 		if dsn == "" {

idp/dex/provider.go

@@ -20,7 +20,6 @@ import (
 	"github.com/dexidp/dex/server"
 	"github.com/dexidp/dex/server/signer"
 	"github.com/dexidp/dex/storage"
-	"github.com/dexidp/dex/storage/sql"
 	jose "github.com/go-jose/go-jose/v4"
 	"github.com/google/uuid"
 	"github.com/prometheus/client_golang/prometheus"
@@ -77,7 +76,7 @@ func NewProvider(ctx context.Context, config *Config) (*Provider, error) {
 
 	// Initialize SQLite storage
 	dbPath := filepath.Join(config.DataDir, "oidc.db")
-	sqliteConfig := &sql.SQLite3{File: dbPath}
+	sqliteConfig := newSQLite3(dbPath)
 	stor, err := sqliteConfig.Open(logger)
 	if err != nil {
 		return nil, fmt.Errorf("failed to open storage: %w", err)

management/internals/controllers/network_map/controller/controller.go

@@ -55,6 +55,15 @@ type Controller struct {
 	proxyController port_forwarding.Controller
 
 	integratedPeerValidator integrated_validator.IntegratedValidator
+
+	// componentsDisabled is the kill switch for the component-based wire
+	// format. When true the controller emits legacy proto.NetworkMap to every
+	// peer regardless of capability — used to roll back instantly via a
+	// management restart from a bad components encoder.
+	//
+	// Set once in NewController from NB_NETWORK_MAP_COMPONENTS_DISABLE and
+	// never written after — readers race-free without a mutex.
+	componentsDisabled bool
 }
 
 type bufferUpdate struct {
@@ -81,12 +90,30 @@ func NewController(ctx context.Context, store store.Store, metrics telemetry.App
 		settingsManager:         settingsManager,
 		dnsDomain:               dnsDomain,
 		config:                  config,
+		componentsDisabled:      parseBoolEnv("NB_NETWORK_MAP_COMPONENTS_DISABLE"),
 
 		proxyController:       proxyController,
 		EphemeralPeersManager: ephemeralPeersManager,
 	}
 }
 
+// PeerNeedsComponents reports whether the gRPC layer should emit the
+// component-based wire format for this peer. Combines the peer's advertised
+// capability with the controller-level kill switch — callers ask exactly
+// this question, so encapsulating it removes accidental double-checks.
+func (c *Controller) PeerNeedsComponents(p *nbpeer.Peer) bool {
+	return p != nil && p.SupportsComponentNetworkMap() && !c.componentsDisabled
+}
+
+// parseBoolEnv reads an env var via strconv.ParseBool so callers accept the
+// usual "1/t/T/TRUE/true/True" set instead of being strict about a single
+// literal — matches the convention used elsewhere in the codebase
+// (e.g. event.go's NB_TRAFFIC_EVENT_*) and reduces operator surprises.
+func parseBoolEnv(key string) bool {
+	v, _ := strconv.ParseBool(os.Getenv(key))
+	return v
+}
+
 func (c *Controller) OnPeerConnected(ctx context.Context, accountID string, peerID string) (chan *network_map.UpdateMessage, error) {
 	peer, err := c.repo.GetPeerByID(ctx, accountID, peerID)
 	if err != nil {
@@ -192,18 +219,26 @@ func (c *Controller) sendUpdateAccountPeers(ctx context.Context, accountID strin
 			c.metrics.CountCalcPostureChecksDuration(time.Since(start))
 			start = time.Now()
 
-			remotePeerNetworkMap := account.GetPeerNetworkMapFromComponents(ctx, p.ID, peersCustomZone, accountZones, approvedPeersMap, resourcePolicies, routers, c.accountManagerMetrics, groupIDToUserIDs)
+			result := account.GetPeerNetworkMapResult(ctx, p.ID, c.componentsDisabled, peersCustomZone, accountZones, approvedPeersMap, resourcePolicies, routers, c.accountManagerMetrics, groupIDToUserIDs)
 
 			c.metrics.CountCalcPeerNetworkMapDuration(time.Since(start))
 
-			proxyNetworkMap, ok := proxyNetworkMaps[peer.ID]
-			if ok {
-				remotePeerNetworkMap.Merge(proxyNetworkMap)
+			proxyNetworkMap := proxyNetworkMaps[p.ID]
+			if result.NetworkMap != nil && proxyNetworkMap != nil {
+				result.NetworkMap.Merge(proxyNetworkMap)
 			}
 
 			peerGroups := account.GetPeerGroups(p.ID)
 			start = time.Now()
-			update := grpc.ToSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, p, nil, nil, remotePeerNetworkMap, dnsDomain, postureChecks, dnsCache, account.Settings, extraSetting, maps.Keys(peerGroups), dnsFwdPort)
+			var update *proto.SyncResponse
+			if result.IsComponents() {
+				// proxyNetworkMap rides the envelope as a ProxyPatch sidecar;
+				// the client merges it into Calculate()'s output the same
+				// way the legacy server did via NetworkMap.Merge.
+				update = grpc.ToComponentSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, p, nil, nil, result.Components, proxyNetworkMap, dnsDomain, postureChecks, account.Settings, extraSetting, maps.Keys(peerGroups), dnsFwdPort)
+			} else {
+				update = grpc.ToSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, p, nil, nil, result.NetworkMap, dnsDomain, postureChecks, dnsCache, account.Settings, extraSetting, maps.Keys(peerGroups), dnsFwdPort)
+			}
 			c.metrics.CountToSyncResponseDuration(time.Since(start))
 
 			c.peersUpdateManager.SendUpdate(ctx, p.ID, &network_map.UpdateMessage{
@@ -314,11 +349,11 @@ func (c *Controller) UpdateAccountPeer(ctx context.Context, accountId string, pe
 		return err
 	}
 
-	remotePeerNetworkMap := account.GetPeerNetworkMapFromComponents(ctx, peerId, peersCustomZone, accountZones, approvedPeersMap, resourcePolicies, routers, c.accountManagerMetrics, groupIDToUserIDs)
+	result := account.GetPeerNetworkMapResult(ctx, peerId, c.componentsDisabled, peersCustomZone, accountZones, approvedPeersMap, resourcePolicies, routers, c.accountManagerMetrics, groupIDToUserIDs)
 
-	proxyNetworkMap, ok := proxyNetworkMaps[peer.ID]
-	if ok {
-		remotePeerNetworkMap.Merge(proxyNetworkMap)
+	proxyNetworkMap := proxyNetworkMaps[peer.ID]
+	if result.NetworkMap != nil && proxyNetworkMap != nil {
+		result.NetworkMap.Merge(proxyNetworkMap)
 	}
 
 	extraSettings, err := c.settingsManager.GetExtraSettings(ctx, peer.AccountID)
@@ -329,7 +364,12 @@ func (c *Controller) UpdateAccountPeer(ctx context.Context, accountId string, pe
 	peerGroups := account.GetPeerGroups(peerId)
 	dnsFwdPort := computeForwarderPort(maps.Values(account.Peers), network_map.DnsForwarderPortMinVersion)
 
-	update := grpc.ToSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, peer, nil, nil, remotePeerNetworkMap, dnsDomain, postureChecks, dnsCache, account.Settings, extraSettings, maps.Keys(peerGroups), dnsFwdPort)
+	var update *proto.SyncResponse
+	if result.IsComponents() {
+		update = grpc.ToComponentSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, peer, nil, nil, result.Components, proxyNetworkMap, dnsDomain, postureChecks, account.Settings, extraSettings, maps.Keys(peerGroups), dnsFwdPort)
+	} else {
+		update = grpc.ToSyncResponse(ctx, nil, c.config.HttpConfig, c.config.DeviceAuthorizationFlow, peer, nil, nil, result.NetworkMap, dnsDomain, postureChecks, dnsCache, account.Settings, extraSettings, maps.Keys(peerGroups), dnsFwdPort)
+	}
 	c.peersUpdateManager.SendUpdate(ctx, peer.ID, &network_map.UpdateMessage{
 		Update:      update,
 		MessageType: network_map.MessageTypeNetworkMap,
@@ -376,6 +416,67 @@ func (c *Controller) BufferUpdateAccountPeers(ctx context.Context, accountID str
 	return nil
 }
 
+// GetValidatedPeerWithComponents is the components-format counterpart of
+// GetValidatedPeerWithMap. It returns raw NetworkMapComponents for capable
+// peers along with the proxy NetworkMap fragment (BYOP / port-forwarding
+// data the legacy server folds in via NetworkMap.Merge). The gRPC layer
+// encodes both into the wire envelope. The caller is responsible for
+// checking peer capability + componentsDisabled before dispatching here —
+// this method does NOT branch on capability itself.
+func (c *Controller) GetValidatedPeerWithComponents(ctx context.Context, isRequiresApproval bool, accountID string, peer *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMapComponents, *types.NetworkMap, []*posture.Checks, int64, error) {
+	if isRequiresApproval {
+		network, err := c.repo.GetAccountNetwork(ctx, accountID)
+		if err != nil {
+			return nil, nil, nil, nil, 0, err
+		}
+		return peer, &types.NetworkMapComponents{Network: network.Copy()}, nil, nil, 0, nil
+	}
+
+	account, err := c.requestBuffer.GetAccountWithBackpressure(ctx, accountID)
+	if err != nil {
+		return nil, nil, nil, nil, 0, err
+	}
+
+	account.InjectProxyPolicies(ctx)
+
+	approvedPeersMap, err := c.integratedPeerValidator.GetValidatedPeers(ctx, account.Id, maps.Values(account.Groups), maps.Values(account.Peers), account.Settings.Extra)
+	if err != nil {
+		return nil, nil, nil, nil, 0, err
+	}
+
+	postureChecks, err := c.getPeerPostureChecks(account, peer.ID)
+	if err != nil {
+		return nil, nil, nil, nil, 0, err
+	}
+
+	accountZones, err := c.repo.GetAccountZones(ctx, account.Id)
+	if err != nil {
+		return nil, nil, nil, nil, 0, err
+	}
+
+	// Fetch the proxy network map fragment for this peer alongside the
+	// components — same single-account-load path the streaming controller
+	// uses, so initial-sync delivers BYOP/forwarding patches synchronously
+	// instead of waiting for the next streaming push.
+	proxyNetworkMaps, err := c.proxyController.GetProxyNetworkMaps(ctx, account.Id, peer.ID, account.Peers)
+	if err != nil {
+		log.WithContext(ctx).Errorf("failed to get proxy network maps: %v", err)
+		return nil, nil, nil, nil, 0, err
+	}
+
+	dnsDomain := c.GetDNSDomain(account.Settings)
+	peersCustomZone := account.GetPeersCustomZone(ctx, dnsDomain)
+
+	resourcePolicies := account.GetResourcePoliciesMap()
+	routers := account.GetResourceRoutersMap()
+	groupIDToUserIDs := account.GetActiveGroupUsers()
+	components := account.GetPeerNetworkMapComponents(ctx, peer.ID, peersCustomZone, accountZones, approvedPeersMap, resourcePolicies, routers, groupIDToUserIDs)
+
+	dnsFwdPort := computeForwarderPort(maps.Values(account.Peers), network_map.DnsForwarderPortMinVersion)
+
+	return peer, components, proxyNetworkMaps[peer.ID], postureChecks, dnsFwdPort, nil
+}
+
 func (c *Controller) GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, peer *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error) {
 	if isRequiresApproval {
 		network, err := c.repo.GetAccountNetwork(ctx, accountID)

management/internals/controllers/network_map/interface.go

@@ -22,6 +22,10 @@ type Controller interface {
 	UpdateAccountPeer(ctx context.Context, accountId string, peerId string) error
 	BufferUpdateAccountPeers(ctx context.Context, accountID string, reason types.UpdateReason) error
 	GetValidatedPeerWithMap(ctx context.Context, isRequiresApproval bool, accountID string, p *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMap, []*posture.Checks, int64, error)
+	GetValidatedPeerWithComponents(ctx context.Context, isRequiresApproval bool, accountID string, p *nbpeer.Peer) (*nbpeer.Peer, *types.NetworkMapComponents, *types.NetworkMap, []*posture.Checks, int64, error)
+	// PeerNeedsComponents combines the peer's advertised capability with the
+	// kill-switch flag — the only public predicate gRPC layers should ask.
+	PeerNeedsComponents(p *nbpeer.Peer) bool
 	GetDNSDomain(settings *types.Settings) string
 	StartWarmup(context.Context)
 	GetNetworkMap(ctx context.Context, peerID string) (*types.NetworkMap, error)

management/internals/controllers/network_map/interface_mock.go

@@ -130,6 +130,39 @@ func (mr *MockControllerMockRecorder) GetValidatedPeerWithMap(ctx, isRequiresApp
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetValidatedPeerWithMap", reflect.TypeOf((*MockController)(nil).GetValidatedPeerWithMap), ctx, isRequiresApproval, accountID, p)
 }
 
+// GetValidatedPeerWithComponents mocks base method.
+func (m *MockController) GetValidatedPeerWithComponents(ctx context.Context, isRequiresApproval bool, accountID string, p *peer.Peer) (*peer.Peer, *types.NetworkMapComponents, *types.NetworkMap, []*posture.Checks, int64, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetValidatedPeerWithComponents", ctx, isRequiresApproval, accountID, p)
+	ret0, _ := ret[0].(*peer.Peer)
+	ret1, _ := ret[1].(*types.NetworkMapComponents)
+	ret2, _ := ret[2].(*types.NetworkMap)
+	ret3, _ := ret[3].([]*posture.Checks)
+	ret4, _ := ret[4].(int64)
+	ret5, _ := ret[5].(error)
+	return ret0, ret1, ret2, ret3, ret4, ret5
+}
+
+// GetValidatedPeerWithComponents indicates an expected call of GetValidatedPeerWithComponents.
+func (mr *MockControllerMockRecorder) GetValidatedPeerWithComponents(ctx, isRequiresApproval, accountID, p any) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetValidatedPeerWithComponents", reflect.TypeOf((*MockController)(nil).GetValidatedPeerWithComponents), ctx, isRequiresApproval, accountID, p)
+}
+
+// PeerNeedsComponents mocks base method.
+func (m *MockController) PeerNeedsComponents(p *peer.Peer) bool {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "PeerNeedsComponents", p)
+	ret0, _ := ret[0].(bool)
+	return ret0
+}
+
+// PeerNeedsComponents indicates an expected call of PeerNeedsComponents.
+func (mr *MockControllerMockRecorder) PeerNeedsComponents(p any) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "PeerNeedsComponents", reflect.TypeOf((*MockController)(nil).PeerNeedsComponents), p)
+}
+
 // OnPeerConnected mocks base method.
 func (m *MockController) OnPeerConnected(ctx context.Context, accountID, peerID string) (chan *UpdateMessage, error) {
 	m.ctrl.T.Helper()

management/internals/shared/grpc/components_encoder.go

@@ -0,0 +1,815 @@
+package grpc
+
+import (
+	"encoding/base64"
+	"strconv"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	resourceTypes "github.com/netbirdio/netbird/management/server/networks/resources/types"
+	routerTypes "github.com/netbirdio/netbird/management/server/networks/routers/types"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	nbroute "github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/shared/management/networkmap"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// wgKeyRawLen is the raw byte length of a WireGuard public key.
+const wgKeyRawLen = 32
+
+// ComponentsEnvelopeInput bundles the data the component-format encoder needs.
+// In Step 2 the envelope is fully self-contained — every field needed by the
+// client's local Calculate() comes from the components struct itself. The
+// only externally-supplied data is the receiving peer's PeerConfig (which is
+// computed alongside the components in the network_map controller and reused
+// from the legacy proto path) and the dns_domain string.
+type ComponentsEnvelopeInput struct {
+	Components       *types.NetworkMapComponents
+	PeerConfig       *proto.PeerConfig
+	DNSDomain        string
+	DNSForwarderPort int64
+	// UserIDClaim is the OIDC claim name the client should embed in
+	// SshAuth.UserIDClaim when reconstructing the NetworkMap. Empty value
+	// is OK — client treats empty as "no SshAuth to build".
+	UserIDClaim string
+	// ProxyPatch carries pre-expanded NetworkMap fragments injected by
+	// external controllers (BYOP/port-forwarding). Nil when no proxy data
+	// is present; encoder skips the field in that case.
+	ProxyPatch *proto.ProxyPatch
+}
+
+// EncodeNetworkMapEnvelope converts NetworkMapComponents into the component
+// wire envelope. The encoder is intentionally non-deterministic: it iterates
+// Go maps in their native (random) order. Indexes inside the envelope
+// (peer_indexes, source_group_ids, agent_version_idx, router_peer_indexes)
+// are self-consistent within a single encode, so the decoder reconstructs
+// the same typed objects regardless of emit order. Tests that need to
+// compare envelopes do so semantically via proto round-trip + canonicalize,
+// not byte-equal.
+//
+// Callers must NOT concatenate or merge envelopes from different encodes —
+// index spaces are local to a single envelope. Delta sync (Step 3+) will
+// use a different shape for the same reason.
+func EncodeNetworkMapEnvelope(in ComponentsEnvelopeInput) *proto.NetworkMapEnvelope {
+	c := in.Components
+
+	// Graceful degrade when components is nil — matches the legacy path's
+	// account_components.go:43 behaviour for missing/unvalidated peers
+	// (return a NetworkMap with only Network populated). The receiver gets
+	// an envelope it can decode without crashing; AccountSettings stays
+	// non-nil so client-side dereferences are safe.
+	if c == nil {
+		// Match legacy missing-peer minimum: a NetworkMap with only Network
+		// populated (account_components.go:43). The receiver gets enough to
+		// bootstrap (Network identifier, dns_domain, account_settings) and
+		// nothing else.
+		return &proto.NetworkMapEnvelope{
+			Payload: &proto.NetworkMapEnvelope_Full{
+				Full: &proto.NetworkMapComponentsFull{
+					PeerConfig:       in.PeerConfig,
+					DnsDomain:        in.DNSDomain,
+					DnsForwarderPort: in.DNSForwarderPort,
+					UserIdClaim:      in.UserIDClaim,
+					AccountSettings:  &proto.AccountSettingsCompact{},
+					ProxyPatch:       in.ProxyPatch,
+				},
+			},
+		}
+	}
+
+	// Phase 1: build dedup tables. Every routing peer (in c.RouterPeers) and
+	// every regular peer (in c.Peers) must be indexed before any encoder
+	// looks up indexes via e.peerOrder — otherwise routes / routers_map for
+	// peers that exist only in c.RouterPeers would silently lose their
+	// peer_index reference.
+	enc := newComponentEncoder(c)
+	enc.indexAllPeers()
+	routerIdxs := enc.indexRouterPeers(c.RouterPeers)
+
+	// Phase 2: gather every policy that any consumer references (peer-pair
+	// policies + resource-only policies) so encodeResourcePoliciesMap can
+	// translate every *Policy pointer to a wire index.
+	allPolicies := unionPolicies(c.Policies, c.ResourcePoliciesMap)
+	policies, policyToIdxs := enc.encodePolicies(allPolicies)
+
+	// Phase 3: emit. Order of struct field expressions no longer matters:
+	// every encoder either reads from the dedup tables or works on
+	// independent input.
+	full := &proto.NetworkMapComponentsFull{
+		Serial:              networkSerial(c.Network),
+		PeerConfig:          in.PeerConfig,
+		Network:             toAccountNetwork(c.Network),
+		AccountSettings:     toAccountSettingsCompact(c.AccountSettings),
+		DnsForwarderPort:    in.DNSForwarderPort,
+		UserIdClaim:         in.UserIDClaim,
+		ProxyPatch:          in.ProxyPatch,
+		DnsSettings:         enc.encodeDNSSettings(c.DNSSettings),
+		DnsDomain:           in.DNSDomain,
+		CustomZoneDomain:    c.CustomZoneDomain,
+		AgentVersions:       enc.agentVersions,
+		Peers:               enc.peers,
+		RouterPeerIndexes:   routerIdxs,
+		Policies:            policies,
+		Groups:              enc.encodeGroups(),
+		Routes:              enc.encodeRoutes(c.Routes),
+		NameserverGroups:    enc.encodeNameServerGroups(c.NameServerGroups),
+		AllDnsRecords:       encodeSimpleRecords(c.AllDNSRecords),
+		AccountZones:        encodeCustomZones(c.AccountZones),
+		NetworkResources:    enc.encodeNetworkResources(c.NetworkResources),
+		RoutersMap:          enc.encodeRoutersMap(c.RoutersMap),
+		ResourcePoliciesMap: enc.encodeResourcePoliciesMap(c.ResourcePoliciesMap, policyToIdxs),
+		GroupIdToUserIds:    enc.encodeGroupIDToUserIDs(c.GroupIDToUserIDs),
+		AllowedUserIds:      stringSetToSlice(c.AllowedUserIDs),
+		PostureFailedPeers:  enc.encodePostureFailedPeers(c.PostureFailedPeers),
+	}
+
+	return &proto.NetworkMapEnvelope{
+		Payload: &proto.NetworkMapEnvelope_Full{Full: full},
+	}
+}
+
+// networkSerial returns c.Network.CurrentSerial() with a nil guard. The
+// production path always populates c.Network (account_components.go:86), but
+// the encoder is exported and a hand-built components struct may omit it.
+func networkSerial(n *types.Network) uint64 {
+	if n == nil {
+		return 0
+	}
+	return n.CurrentSerial()
+}
+
+type componentEncoder struct {
+	components *types.NetworkMapComponents
+
+	peerOrder map[string]uint32
+	peers     []*proto.PeerCompact
+
+	agentVersionOrder map[string]uint32
+	agentVersions     []string
+}
+
+func newComponentEncoder(c *types.NetworkMapComponents) *componentEncoder {
+	return &componentEncoder{
+		components:        c,
+		peerOrder:         make(map[string]uint32, len(c.Peers)),
+		peers:             make([]*proto.PeerCompact, 0, len(c.Peers)),
+		agentVersionOrder: make(map[string]uint32),
+	}
+}
+
+func (e *componentEncoder) indexAllPeers() {
+	for _, p := range e.components.Peers {
+		if p == nil {
+			continue
+		}
+		e.appendPeer(p)
+	}
+}
+
+func (e *componentEncoder) appendPeer(p *nbpeer.Peer) uint32 {
+	if idx, ok := e.peerOrder[p.ID]; ok {
+		return idx
+	}
+	idx := uint32(len(e.peers))
+	e.peerOrder[p.ID] = idx
+	e.peers = append(e.peers, toPeerCompact(p, e.agentVersionIndex(p.Meta.WtVersion)))
+	return idx
+}
+
+func (e *componentEncoder) agentVersionIndex(v string) uint32 {
+	if idx, ok := e.agentVersionOrder[v]; ok {
+		return idx
+	}
+	// Lazy-initialise the table with "" at index 0 so the empty string
+	// stays interchangeable with proto3's default uint32=0 — peers without
+	// a WtVersion don't force the table to materialise.
+	if v == "" {
+		idx := uint32(len(e.agentVersions))
+		if idx == 0 {
+			e.agentVersions = append(e.agentVersions, "")
+		}
+		e.agentVersionOrder[""] = idx
+		return idx
+	}
+	if len(e.agentVersions) == 0 {
+		e.agentVersions = append(e.agentVersions, "")
+		e.agentVersionOrder[""] = 0
+	}
+	idx := uint32(len(e.agentVersions))
+	e.agentVersionOrder[v] = idx
+	e.agentVersions = append(e.agentVersions, v)
+	return idx
+}
+
+// indexRouterPeers ensures every router peer is in the peer dedup table
+// (c.RouterPeers may contain peers not in c.Peers when validation rules drop
+// them) and returns their wire indexes for the RouterPeerIndexes field. Must
+// run before any encoder that resolves peer ids via e.peerOrder.
+func (e *componentEncoder) indexRouterPeers(routers map[string]*nbpeer.Peer) []uint32 {
+	if len(routers) == 0 {
+		return nil
+	}
+	out := make([]uint32, 0, len(routers))
+	for _, p := range routers {
+		if p == nil {
+			continue
+		}
+		out = append(out, e.appendPeer(p))
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeGroups() []*proto.GroupCompact {
+	if len(e.components.Groups) == 0 {
+		return nil
+	}
+
+	out := make([]*proto.GroupCompact, 0, len(e.components.Groups))
+	for _, g := range e.components.Groups {
+		if !g.HasSeqID() {
+			continue
+		}
+		peerIdxs := make([]uint32, 0, len(g.Peers))
+		for _, peerID := range g.Peers {
+			if idx, ok := e.peerOrder[peerID]; ok {
+				peerIdxs = append(peerIdxs, idx)
+			}
+		}
+		out = append(out, &proto.GroupCompact{
+			Id:          g.AccountSeqID,
+			Name:        g.Name,
+			PeerIndexes: peerIdxs,
+		})
+	}
+	return out
+}
+
+// encodePolicies flattens Policy{Rules} → []PolicyCompact. Returns the wire
+// list and a map from policy pointer to the indexes of its emitted rules in
+// that list — used by encodeResourcePoliciesMap to translate
+// ResourcePoliciesMap[resourceID][]*Policy into wire-side indexes.
+func (e *componentEncoder) encodePolicies(policies []*types.Policy) ([]*proto.PolicyCompact, map[*types.Policy][]uint32) {
+	if len(policies) == 0 {
+		return nil, nil
+	}
+
+	out := make([]*proto.PolicyCompact, 0, len(policies))
+	idxByPolicy := make(map[*types.Policy][]uint32, len(policies))
+
+	for _, pol := range policies {
+		if !pol.HasSeqID() || !pol.Enabled {
+			continue
+		}
+		for _, r := range pol.Rules {
+			if r == nil || !r.Enabled {
+				continue
+			}
+			idxByPolicy[pol] = append(idxByPolicy[pol], uint32(len(out)))
+			out = append(out, e.encodePolicyRule(pol, r))
+		}
+	}
+	return out, idxByPolicy
+}
+
+// encodePolicyRule maps a single PolicyRule under pol to a PolicyCompact entry.
+func (e *componentEncoder) encodePolicyRule(pol *types.Policy, r *types.PolicyRule) *proto.PolicyCompact {
+	return &proto.PolicyCompact{
+		Id:                       pol.AccountSeqID,
+		Action:                   networkmap.GetProtoAction(string(r.Action)),
+		Protocol:                 networkmap.GetProtoProtocol(string(r.Protocol)),
+		Bidirectional:            r.Bidirectional,
+		Ports:                    portsToUint32(r.Ports),
+		PortRanges:               portRangesToProto(r.PortRanges),
+		SourceGroupIds:           e.groupSeqIDs(r.Sources),
+		DestinationGroupIds:      e.groupSeqIDs(r.Destinations),
+		AuthorizedUser:           r.AuthorizedUser,
+		AuthorizedGroups:         e.encodeAuthorizedGroups(r.AuthorizedGroups),
+		SourceResource:           e.resourceToProto(r.SourceResource),
+		DestinationResource:      e.resourceToProto(r.DestinationResource),
+		SourcePostureCheckSeqIds: e.postureCheckSeqs(pol.SourcePostureChecks),
+	}
+}
+
+// groupSeqIDs maps the xid group IDs in src to their per-account seq ids,
+// dropping any group that has no seq id assigned.
+func (e *componentEncoder) groupSeqIDs(src []string) []uint32 {
+	if len(src) == 0 {
+		return nil
+	}
+	out := make([]uint32, 0, len(src))
+	for _, gid := range src {
+		if seq, ok := e.groupSeq(gid); ok {
+			out = append(out, seq)
+		}
+	}
+	return out
+}
+
+// unionPolicies merges c.Policies with every policy referenced by
+// c.ResourcePoliciesMap, deduplicating by pointer identity. Resource-only
+// policies (relevant to a NetworkResource but not to peer-pair traffic)
+// only live in ResourcePoliciesMap; without this union step they'd be lost
+// from the wire and the client's resource-policy lookup would come back
+// empty.
+func unionPolicies(policies []*types.Policy, resourcePolicies map[string][]*types.Policy) []*types.Policy {
+	// Fast path: non-router peers have no resource-only policies, so the
+	// "union" is identical to `policies`. Skip the dedup map allocation.
+	if len(resourcePolicies) == 0 {
+		return policies
+	}
+	seen := make(map[*types.Policy]struct{}, len(policies))
+	out := make([]*types.Policy, 0, len(policies))
+	for _, p := range policies {
+		if p == nil {
+			continue
+		}
+		if _, ok := seen[p]; ok {
+			continue
+		}
+		seen[p] = struct{}{}
+		out = append(out, p)
+	}
+	for _, list := range resourcePolicies {
+		for _, p := range list {
+			if p == nil {
+				continue
+			}
+			if _, ok := seen[p]; ok {
+				continue
+			}
+			seen[p] = struct{}{}
+			out = append(out, p)
+		}
+	}
+	return out
+}
+
+// encodeAuthorizedGroups translates rule.AuthorizedGroups (map keyed by
+// group xid → local-user names) to the wire form (map keyed by group
+// account_seq_id → UserNameList). Groups without a seq id are dropped —
+// matches how source/destination group references handle the same case.
+func (e *componentEncoder) encodeAuthorizedGroups(m map[string][]string) map[uint32]*proto.UserNameList {
+	if len(m) == 0 {
+		return nil
+	}
+	out := make(map[uint32]*proto.UserNameList, len(m))
+	for groupID, names := range m {
+		seq, ok := e.groupSeq(groupID)
+		if !ok {
+			continue
+		}
+		out[seq] = &proto.UserNameList{Names: append([]string(nil), names...)}
+	}
+	return out
+}
+
+func (e *componentEncoder) groupSeq(groupID string) (uint32, bool) {
+	g, ok := e.components.Groups[groupID]
+	if !ok || !g.HasSeqID() {
+		return 0, false
+	}
+	return g.AccountSeqID, true
+}
+
+// resourceToProto translates types.Resource for the wire. For peer-typed
+// resources the peer id is converted to a peer index into the envelope's
+// peers array. For other resource types only the type string is shipped
+// today (Calculate's resource-typed rule path consults SourceResource only
+// for "peer" — other types fall through to group-based lookup).
+func (e *componentEncoder) resourceToProto(r types.Resource) *proto.ResourceCompact {
+	if r.ID == "" && r.Type == "" {
+		return nil
+	}
+	out := &proto.ResourceCompact{Type: string(r.Type)}
+	if r.Type == types.ResourceTypePeer && r.ID != "" {
+		if idx, ok := e.peerOrder[r.ID]; ok {
+			out.PeerIndexSet = true
+			out.PeerIndex = idx
+		}
+	}
+	return out
+}
+
+// postureCheckSeqs translates a slice of posture-check xids to their
+// per-account integer ids using the NetworkMapComponents.PostureCheckXIDToSeq
+// lookup. Unresolvable xids are silently dropped — matches how group/peer
+// references handle the same case.
+func (e *componentEncoder) postureCheckSeqs(xids []string) []uint32 {
+	if len(xids) == 0 || len(e.components.PostureCheckXIDToSeq) == 0 {
+		return nil
+	}
+	out := make([]uint32, 0, len(xids))
+	for _, xid := range xids {
+		if seq, ok := e.components.PostureCheckXIDToSeq[xid]; ok {
+			out = append(out, seq)
+		}
+	}
+	return out
+}
+
+// networkSeq translates a Network xid to its per-account integer id using
+// the NetworkMapComponents.NetworkXIDToSeq lookup. Returns (0,false) when
+// the xid isn't known — callers decide whether to skip the parent record.
+func (e *componentEncoder) networkSeq(xid string) (uint32, bool) {
+	if xid == "" {
+		return 0, false
+	}
+	seq, ok := e.components.NetworkXIDToSeq[xid]
+	if !ok || seq == 0 {
+		return 0, false
+	}
+	return seq, true
+}
+
+func (e *componentEncoder) encodeDNSSettings(s *types.DNSSettings) *proto.DNSSettingsCompact {
+	if s == nil || len(s.DisabledManagementGroups) == 0 {
+		return nil
+	}
+	out := &proto.DNSSettingsCompact{
+		DisabledManagementGroupIds: make([]uint32, 0, len(s.DisabledManagementGroups)),
+	}
+	for _, gid := range s.DisabledManagementGroups {
+		if seq, ok := e.groupSeq(gid); ok {
+			out.DisabledManagementGroupIds = append(out.DisabledManagementGroupIds, seq)
+		}
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeRoutes(routes []*nbroute.Route) []*proto.RouteRaw {
+	if len(routes) == 0 {
+		return nil
+	}
+	out := make([]*proto.RouteRaw, 0, len(routes))
+	for _, r := range routes {
+		if r == nil {
+			continue
+		}
+		rr := &proto.RouteRaw{
+			Id:                    r.AccountSeqID,
+			NetId:                 string(r.NetID),
+			Description:           r.Description,
+			KeepRoute:             r.KeepRoute,
+			NetworkType:           int32(r.NetworkType),
+			Masquerade:            r.Masquerade,
+			Metric:                int32(r.Metric),
+			Enabled:               r.Enabled,
+			SkipAutoApply:         r.SkipAutoApply,
+			Domains:               r.Domains.ToPunycodeList(),
+			GroupIds:              e.groupIDsToSeq(r.Groups),
+			AccessControlGroupIds: e.groupIDsToSeq(r.AccessControlGroups),
+			PeerGroupIds:          e.groupIDsToSeq(r.PeerGroups),
+		}
+		if r.Network.IsValid() {
+			rr.NetworkCidr = r.Network.String()
+		}
+		if r.Peer != "" {
+			if idx, ok := e.peerOrder[r.Peer]; ok {
+				rr.PeerIndexSet = true
+				rr.PeerIndex = idx
+			}
+		}
+		out = append(out, rr)
+	}
+	return out
+}
+
+func (e *componentEncoder) groupIDsToSeq(groupIDs []string) []uint32 {
+	if len(groupIDs) == 0 {
+		return nil
+	}
+	out := make([]uint32, 0, len(groupIDs))
+	for _, gid := range groupIDs {
+		if seq, ok := e.groupSeq(gid); ok {
+			out = append(out, seq)
+		}
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeNameServerGroups(nsgs []*nbdns.NameServerGroup) []*proto.NameServerGroupRaw {
+	if len(nsgs) == 0 {
+		return nil
+	}
+	out := make([]*proto.NameServerGroupRaw, 0, len(nsgs))
+	for _, nsg := range nsgs {
+		if nsg == nil {
+			continue
+		}
+		entry := &proto.NameServerGroupRaw{
+			Id:                   nsg.AccountSeqID,
+			Name:                 nsg.Name,
+			Description:          nsg.Description,
+			Nameservers:          encodeNameServers(nsg.NameServers),
+			GroupIds:             e.groupIDsToSeq(nsg.Groups),
+			Primary:              nsg.Primary,
+			Domains:              nsg.Domains,
+			Enabled:              nsg.Enabled,
+			SearchDomainsEnabled: nsg.SearchDomainsEnabled,
+		}
+		out = append(out, entry)
+	}
+	return out
+}
+
+func encodeNameServers(servers []nbdns.NameServer) []*proto.NameServer {
+	if len(servers) == 0 {
+		return nil
+	}
+	out := make([]*proto.NameServer, 0, len(servers))
+	for _, s := range servers {
+		out = append(out, &proto.NameServer{
+			IP:     s.IP.String(),
+			NSType: int64(s.NSType),
+			Port:   int64(s.Port),
+		})
+	}
+	return out
+}
+
+func encodeSimpleRecords(records []nbdns.SimpleRecord) []*proto.SimpleRecord {
+	if len(records) == 0 {
+		return nil
+	}
+	out := make([]*proto.SimpleRecord, 0, len(records))
+	for _, r := range records {
+		out = append(out, &proto.SimpleRecord{
+			Name:  r.Name,
+			Type:  int64(r.Type),
+			Class: r.Class,
+			TTL:   int64(r.TTL),
+			RData: r.RData,
+		})
+	}
+	return out
+}
+
+func encodeCustomZones(zones []nbdns.CustomZone) []*proto.CustomZone {
+	if len(zones) == 0 {
+		return nil
+	}
+	out := make([]*proto.CustomZone, 0, len(zones))
+	for _, z := range zones {
+		out = append(out, &proto.CustomZone{
+			Domain:               z.Domain,
+			Records:              encodeSimpleRecords(z.Records),
+			SearchDomainDisabled: z.SearchDomainDisabled,
+			NonAuthoritative:     z.NonAuthoritative,
+		})
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeNetworkResources(resources []*resourceTypes.NetworkResource) []*proto.NetworkResourceRaw {
+	if len(resources) == 0 {
+		return nil
+	}
+	out := make([]*proto.NetworkResourceRaw, 0, len(resources))
+	for _, r := range resources {
+		if r == nil {
+			continue
+		}
+		entry := &proto.NetworkResourceRaw{
+			Id:          r.AccountSeqID,
+			Name:        r.Name,
+			Description: r.Description,
+			Type:        string(r.Type),
+			Address:     r.Address,
+			DomainValue: r.Domain,
+			Enabled:     r.Enabled,
+		}
+		if seq, ok := e.networkSeq(r.NetworkID); ok {
+			entry.NetworkSeq = seq
+		}
+		if r.Prefix.IsValid() {
+			entry.PrefixCidr = r.Prefix.String()
+		}
+		out = append(out, entry)
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeRoutersMap(routersMap map[string]map[string]*routerTypes.NetworkRouter) map[uint32]*proto.NetworkRouterList {
+	if len(routersMap) == 0 {
+		return nil
+	}
+	out := make(map[uint32]*proto.NetworkRouterList, len(routersMap))
+	for networkXID, routers := range routersMap {
+		if len(routers) == 0 {
+			continue
+		}
+		netSeq, ok := e.networkSeq(networkXID)
+		if !ok {
+			continue
+		}
+		entries := make([]*proto.NetworkRouterEntry, 0, len(routers))
+		for peerID, r := range routers {
+			if r == nil {
+				continue
+			}
+			entry := &proto.NetworkRouterEntry{
+				Id:           r.AccountSeqID,
+				PeerGroupIds: e.groupIDsToSeq(r.PeerGroups),
+				Masquerade:   r.Masquerade,
+				Metric:       int32(r.Metric),
+				Enabled:      r.Enabled,
+			}
+			if idx, ok := e.peerOrder[peerID]; ok {
+				entry.PeerIndexSet = true
+				entry.PeerIndex = idx
+			}
+			entries = append(entries, entry)
+		}
+		out[netSeq] = &proto.NetworkRouterList{Entries: entries}
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeResourcePoliciesMap(rpm map[string][]*types.Policy, policyToIdxs map[*types.Policy][]uint32) map[uint32]*proto.PolicyIndexes {
+	if len(rpm) == 0 {
+		return nil
+	}
+	// resourceXIDToSeq is local to one encode — built from components.NetworkResources
+	// (small slice). Network resources without seq id are dropped, matching how
+	// other components-without-seq are silently filtered.
+	resourceXIDToSeq := make(map[string]uint32, len(e.components.NetworkResources))
+	for _, r := range e.components.NetworkResources {
+		if r != nil && r.AccountSeqID != 0 {
+			resourceXIDToSeq[r.ID] = r.AccountSeqID
+		}
+	}
+	out := make(map[uint32]*proto.PolicyIndexes, len(rpm))
+	for resourceXID, policies := range rpm {
+		seq, ok := resourceXIDToSeq[resourceXID]
+		if !ok {
+			continue
+		}
+		idxs := make([]uint32, 0, len(policies)*2)
+		for _, pol := range policies {
+			idxs = append(idxs, policyToIdxs[pol]...)
+		}
+		if len(idxs) == 0 {
+			continue
+		}
+		out[seq] = &proto.PolicyIndexes{Indexes: idxs}
+	}
+	return out
+}
+
+func (e *componentEncoder) encodeGroupIDToUserIDs(m map[string][]string) map[uint32]*proto.UserIDList {
+	if len(m) == 0 {
+		return nil
+	}
+	out := make(map[uint32]*proto.UserIDList, len(m))
+	for groupID, userIDs := range m {
+		seq, ok := e.groupSeq(groupID)
+		if !ok || len(userIDs) == 0 {
+			continue
+		}
+		out[seq] = &proto.UserIDList{UserIds: userIDs}
+	}
+	return out
+}
+
+func stringSetToSlice(s map[string]struct{}) []string {
+	if len(s) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(s))
+	for k := range s {
+		out = append(out, k)
+	}
+	return out
+}
+
+func (e *componentEncoder) encodePostureFailedPeers(m map[string]map[string]struct{}) map[uint32]*proto.PeerIndexSet {
+	if len(m) == 0 {
+		return nil
+	}
+	out := make(map[uint32]*proto.PeerIndexSet, len(m))
+	for checkXID, failedPeerIDs := range m {
+		seq, ok := e.components.PostureCheckXIDToSeq[checkXID]
+		if !ok || seq == 0 {
+			continue
+		}
+		idxs := make([]uint32, 0, len(failedPeerIDs))
+		for peerID := range failedPeerIDs {
+			if idx, ok := e.peerOrder[peerID]; ok {
+				idxs = append(idxs, idx)
+			}
+		}
+		if len(idxs) == 0 {
+			continue
+		}
+		out[seq] = &proto.PeerIndexSet{PeerIndexes: idxs}
+	}
+	return out
+}
+
+// toAccountSettingsCompact always returns a non-nil message — the client
+// dereferences it unconditionally during Calculate(), so a nil here would
+// crash the receiver. A missing types.AccountSettingsInfo on the server
+// (which shouldn't happen in production but the encoder is exported)
+// degrades to login_expiration_enabled = false, which makes
+// LoginExpired() return false for every peer.
+func toAccountSettingsCompact(s *types.AccountSettingsInfo) *proto.AccountSettingsCompact {
+	if s == nil {
+		return &proto.AccountSettingsCompact{}
+	}
+	return &proto.AccountSettingsCompact{
+		PeerLoginExpirationEnabled: s.PeerLoginExpirationEnabled,
+		PeerLoginExpirationNs:      int64(s.PeerLoginExpiration),
+	}
+}
+
+func toAccountNetwork(n *types.Network) *proto.AccountNetwork {
+	if n == nil {
+		return nil
+	}
+	out := &proto.AccountNetwork{
+		Identifier: n.Identifier,
+		NetCidr:    n.Net.String(),
+		Dns:        n.Dns,
+		Serial:     n.CurrentSerial(),
+	}
+	if len(n.NetV6.IP) > 0 {
+		out.NetV6Cidr = n.NetV6.String()
+	}
+	return out
+}
+
+func toPeerCompact(p *nbpeer.Peer, agentVersionIdx uint32) *proto.PeerCompact {
+	pc := &proto.PeerCompact{
+		WgPubKey:               decodeWgKey(p.Key),
+		SshPubKey:              []byte(p.SSHKey),
+		DnsLabel:               p.DNSLabel,
+		AgentVersionIdx:        agentVersionIdx,
+		AddedWithSsoLogin:      p.UserID != "",
+		LoginExpirationEnabled: p.LoginExpirationEnabled,
+		SshEnabled:             p.SSHEnabled,
+		SupportsIpv6:           p.SupportsIPv6(),
+		SupportsSourcePrefixes: p.SupportsSourcePrefixes(),
+		ServerSshAllowed:       p.Meta.Flags.ServerSSHAllowed,
+	}
+	if p.LastLogin != nil {
+		pc.LastLoginUnixNano = p.LastLogin.UnixNano()
+	}
+	switch {
+	case !p.IP.IsValid():
+		// leave Ip nil
+	case p.IP.Is4() || p.IP.Is4In6():
+		ip := p.IP.Unmap().As4()
+		pc.Ip = ip[:]
+	default:
+		ip := p.IP.As16()
+		pc.Ip = ip[:]
+	}
+	if p.IPv6.IsValid() {
+		ip := p.IPv6.As16()
+		pc.Ipv6 = ip[:]
+	}
+	return pc
+}
+
+// decodeWgKey returns the raw 32 bytes of a base64-encoded WireGuard public
+// key, or nil for an empty / malformed key.
+func decodeWgKey(s string) []byte {
+	if s == "" {
+		return nil
+	}
+	out := make([]byte, wgKeyRawLen)
+	n, err := base64.StdEncoding.Decode(out, []byte(s))
+	if err != nil || n != wgKeyRawLen {
+		return nil
+	}
+	return out
+}
+
+func portsToUint32(ports []string) []uint32 {
+	if len(ports) == 0 {
+		return nil
+	}
+	out := make([]uint32, 0, len(ports))
+	for _, p := range ports {
+		v, err := strconv.ParseUint(p, 10, 16)
+		if err != nil {
+			continue
+		}
+		out = append(out, uint32(v))
+	}
+	return out
+}
+
+func portRangesToProto(ranges []types.RulePortRange) []*proto.PortInfo_Range {
+	if len(ranges) == 0 {
+		return nil
+	}
+	out := make([]*proto.PortInfo_Range, 0, len(ranges))
+	for _, r := range ranges {
+		out = append(out, &proto.PortInfo_Range{
+			Start: uint32(r.Start),
+			End:   uint32(r.End),
+		})
+	}
+	return out
+}

management/internals/shared/grpc/components_encoder_test.go

@@ -0,0 +1,879 @@
+package grpc
+
+import (
+	"bytes"
+	"cmp"
+	"net"
+	"net/netip"
+	"slices"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	goproto "google.golang.org/protobuf/proto"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	resourceTypes "github.com/netbirdio/netbird/management/server/networks/resources/types"
+	routerTypes "github.com/netbirdio/netbird/management/server/networks/routers/types"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	nbroute "github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+const testWgKeyA = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopq="
+const testWgKeyB = "BBCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopq="
+const testWgKeyC = "CBCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopq="
+
+// canonicalize rewrites a NetworkMapComponentsFull in place into a canonical
+// form: peers reordered by wg_pub_key, with the rest of the message rewritten
+// to reference the new peer indexes. Groups, policies, and router indexes are
+// also sorted. After canonicalize, two envelopes built from the same logical
+// input compare byte-equal via proto.Equal.
+//
+// This lives on the test side — the encoder itself emits in map-iteration
+// order. Test-side normalization is the contract for "two encodes are
+// equivalent".
+func canonicalize(full *proto.NetworkMapComponentsFull) {
+	if full == nil {
+		return
+	}
+
+	// Canonicalize agent_versions first: sort the slice and rewrite each
+	// peer's AgentVersionIdx accordingly. The empty placeholder stays at
+	// index 0 by convention.
+	avRemap := make(map[uint32]uint32, len(full.AgentVersions))
+	if len(full.AgentVersions) > 0 {
+		// Pair version → original index, sort, rebuild.
+		type avEntry struct {
+			version string
+			oldIdx  uint32
+		}
+		entries := make([]avEntry, len(full.AgentVersions))
+		for i, v := range full.AgentVersions {
+			entries[i] = avEntry{version: v, oldIdx: uint32(i)}
+		}
+		// Empty stays at 0; sort the rest by string. Tiebreaker on oldIdx
+		// keeps the canonicalize output stable when two entries compare
+		// equal (the encoder dedups, but defending against future inputs).
+		slices.SortFunc(entries, func(a, b avEntry) int {
+			if a.version == "" && b.version != "" {
+				return -1
+			}
+			if b.version == "" && a.version != "" {
+				return 1
+			}
+			if c := cmp.Compare(a.version, b.version); c != 0 {
+				return c
+			}
+			return cmp.Compare(a.oldIdx, b.oldIdx)
+		})
+		newVersions := make([]string, len(entries))
+		for newIdx, e := range entries {
+			avRemap[e.oldIdx] = uint32(newIdx)
+			newVersions[newIdx] = e.version
+		}
+		full.AgentVersions = newVersions
+	}
+	for _, p := range full.Peers {
+		if newIdx, ok := avRemap[p.AgentVersionIdx]; ok {
+			p.AgentVersionIdx = newIdx
+		}
+	}
+
+	type peerEntry struct {
+		peer   *proto.PeerCompact
+		oldIdx uint32
+	}
+	entries := make([]peerEntry, len(full.Peers))
+	for i, p := range full.Peers {
+		entries[i] = peerEntry{peer: p, oldIdx: uint32(i)}
+	}
+	// DnsLabel is unique per peer; it tiebreaks on equal WgPubKey (e.g. both
+	// nil from malformed keys, or both empty for placeholders).
+	slices.SortFunc(entries, func(a, b peerEntry) int {
+		if c := bytes.Compare(a.peer.WgPubKey, b.peer.WgPubKey); c != 0 {
+			return c
+		}
+		return cmp.Compare(a.peer.DnsLabel, b.peer.DnsLabel)
+	})
+
+	remap := make(map[uint32]uint32, len(entries))
+	newPeers := make([]*proto.PeerCompact, len(entries))
+	for newIdx, e := range entries {
+		remap[e.oldIdx] = uint32(newIdx)
+		newPeers[newIdx] = e.peer
+	}
+	full.Peers = newPeers
+
+	full.RouterPeerIndexes = remapAndSort(full.RouterPeerIndexes, remap)
+	for _, g := range full.Groups {
+		g.PeerIndexes = remapAndSort(g.PeerIndexes, remap)
+	}
+	slices.SortFunc(full.Groups, func(a, b *proto.GroupCompact) int { return cmp.Compare(a.Id, b.Id) })
+
+	for _, r := range full.Routes {
+		if r.PeerIndexSet {
+			if newIdx, ok := remap[r.PeerIndex]; ok {
+				r.PeerIndex = newIdx
+			}
+		}
+		slices.Sort(r.GroupIds)
+		slices.Sort(r.AccessControlGroupIds)
+		slices.Sort(r.PeerGroupIds)
+	}
+	slices.SortFunc(full.Routes, func(a, b *proto.RouteRaw) int { return cmp.Compare(a.Id, b.Id) })
+
+	for _, list := range full.RoutersMap {
+		for _, entry := range list.Entries {
+			if entry.PeerIndexSet {
+				if newIdx, ok := remap[entry.PeerIndex]; ok {
+					entry.PeerIndex = newIdx
+				}
+			}
+			slices.Sort(entry.PeerGroupIds)
+		}
+		slices.SortFunc(list.Entries, func(a, b *proto.NetworkRouterEntry) int { return cmp.Compare(a.Id, b.Id) })
+	}
+
+	for _, set := range full.PostureFailedPeers {
+		set.PeerIndexes = remapAndSort(set.PeerIndexes, remap)
+	}
+
+	for _, p := range full.Policies {
+		slices.Sort(p.SourceGroupIds)
+		slices.Sort(p.DestinationGroupIds)
+	}
+	// Sort policies by (Id, source_group_ids, destination_group_ids) so that
+	// multiple PolicyCompact entries sharing the same Id (one per rule, when
+	// a Policy has multiple rules) still get a deterministic order. After
+	// sorting we remap indexes in ResourcePoliciesMap.
+	policyOldOrder := make(map[*proto.PolicyCompact]uint32, len(full.Policies))
+	for i, p := range full.Policies {
+		policyOldOrder[p] = uint32(i)
+	}
+	slices.SortFunc(full.Policies, func(a, b *proto.PolicyCompact) int {
+		if c := cmp.Compare(a.Id, b.Id); c != 0 {
+			return c
+		}
+		if c := slices.Compare(a.SourceGroupIds, b.SourceGroupIds); c != 0 {
+			return c
+		}
+		return slices.Compare(a.DestinationGroupIds, b.DestinationGroupIds)
+	})
+	policyRemap := make(map[uint32]uint32, len(full.Policies))
+	for newIdx, p := range full.Policies {
+		policyRemap[policyOldOrder[p]] = uint32(newIdx)
+	}
+	for _, idxs := range full.ResourcePoliciesMap {
+		idxs.Indexes = remapAndSort(idxs.Indexes, policyRemap)
+	}
+	for _, list := range full.GroupIdToUserIds {
+		slices.Sort(list.UserIds)
+	}
+	slices.Sort(full.AllowedUserIds)
+}
+
+func remapAndSort(idxs []uint32, remap map[uint32]uint32) []uint32 {
+	out := make([]uint32, 0, len(idxs))
+	for _, i := range idxs {
+		if newIdx, ok := remap[i]; ok {
+			out = append(out, newIdx)
+		}
+	}
+	slices.Sort(out)
+	return out
+}
+
+// envelopesEquivalent decodes both envelopes, canonicalizes them, and reports
+// whether they're proto.Equal. Use instead of byte-comparing marshaled output:
+// the encoder is intentionally non-deterministic.
+func envelopesEquivalent(a, b *proto.NetworkMapEnvelope) bool {
+	canonicalize(a.GetFull())
+	canonicalize(b.GetFull())
+	return goproto.Equal(a, b)
+}
+
+func newTestComponents() *types.NetworkMapComponents {
+	peerA := &nbpeer.Peer{
+		ID:       "peer-a",
+		Key:      testWgKeyA,
+		IP:       netip.AddrFrom4([4]byte{100, 64, 0, 1}),
+		DNSLabel: "peera",
+		SSHKey:   "ssh-a",
+		Status:   &nbpeer.PeerStatus{Connected: true, LastSeen: time.Now()},
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+	peerB := &nbpeer.Peer{
+		ID:       "peer-b",
+		Key:      testWgKeyB,
+		IP:       netip.AddrFrom4([4]byte{100, 64, 0, 2}),
+		IPv6:     netip.AddrFrom16([16]byte{0xfd, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2}),
+		DNSLabel: "peerb",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.25.0"},
+	}
+	peerC := &nbpeer.Peer{
+		ID:       "peer-c",
+		Key:      testWgKeyC,
+		IP:       netip.AddrFrom4([4]byte{100, 64, 0, 3}),
+		DNSLabel: "peerc",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+
+	return &types.NetworkMapComponents{
+		PeerID: "peer-a",
+		Network: &types.Network{
+			Identifier: "net-test",
+			Net:        net.IPNet{IP: net.IP{100, 64, 0, 0}, Mask: net.CIDRMask(10, 32)},
+			Serial:     7,
+		},
+		AccountSettings: &types.AccountSettingsInfo{
+			PeerLoginExpirationEnabled: true,
+			PeerLoginExpiration:        2 * time.Hour,
+		},
+		Peers: map[string]*nbpeer.Peer{
+			"peer-a": peerA,
+			"peer-b": peerB,
+			"peer-c": peerC,
+		},
+		Groups: map[string]*types.Group{
+			"group-src": {ID: "group-src", AccountSeqID: 1, Name: "Src", Peers: []string{"peer-a"}},
+			"group-dst": {ID: "group-dst", AccountSeqID: 2, Name: "Dst", Peers: []string{"peer-b", "peer-c"}},
+		},
+		Policies: []*types.Policy{
+			{
+				ID:           "pol-1",
+				AccountSeqID: 10,
+				Enabled:      true,
+				Rules: []*types.PolicyRule{{
+					ID: "rule-1", Enabled: true, Action: types.PolicyTrafficActionAccept,
+					Protocol: types.PolicyRuleProtocolTCP, Bidirectional: true,
+					Ports:        []string{"22", "80"},
+					PortRanges:   []types.RulePortRange{{Start: 8000, End: 8100}},
+					Sources:      []string{"group-src"},
+					Destinations: []string{"group-dst"},
+				}},
+			},
+		},
+		RouterPeers: map[string]*nbpeer.Peer{"peer-c": peerC},
+	}
+}
+
+func TestEncodeNetworkMapEnvelope_Basic(t *testing.T) {
+	c := newTestComponents()
+	env := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{
+		Components: c,
+		DNSDomain:  "netbird.cloud",
+	})
+
+	require.NotNil(t, env)
+	full := env.GetFull()
+	require.NotNil(t, full, "envelope must contain Full payload")
+
+	assert.EqualValues(t, 7, full.Serial)
+	assert.Equal(t, "netbird.cloud", full.DnsDomain)
+
+	require.NotNil(t, full.Network)
+	assert.Equal(t, "net-test", full.Network.Identifier)
+	assert.Equal(t, "100.64.0.0/10", full.Network.NetCidr)
+
+	require.NotNil(t, full.AccountSettings)
+	assert.True(t, full.AccountSettings.PeerLoginExpirationEnabled)
+	assert.EqualValues(t, (2 * time.Hour).Nanoseconds(), full.AccountSettings.PeerLoginExpirationNs)
+
+	require.Len(t, full.Peers, 3)
+	byLabel := map[string]*proto.PeerCompact{}
+	for _, p := range full.Peers {
+		assert.Len(t, p.WgPubKey, 32, "wg key must be raw 32 bytes")
+		assert.Len(t, p.Ip, 4, "ipv4 must be raw 4 bytes")
+		byLabel[p.DnsLabel] = p
+	}
+	assert.Len(t, byLabel["peerb"].Ipv6, 16, "peer-b has ipv6 → 16 bytes")
+}
+
+func TestEncodeNetworkMapEnvelope_RepeatEncodesEquivalent(t *testing.T) {
+	c := newTestComponents()
+
+	expected := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+
+	// Hammer it 100 times — Go map iteration is randomized per call, so each
+	// run produces different wire bytes, but the canonicalized form must
+	// match.
+	for i := 0; i < 100; i++ {
+		got := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+		require.True(t, envelopesEquivalent(expected, got),
+			"encode #%d must be semantically equivalent to first encode", i)
+	}
+}
+
+func TestEncodeNetworkMapEnvelope_ConcurrentEncodesEquivalent(t *testing.T) {
+	c := newTestComponents()
+
+	expected := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+
+	const goroutines = 50
+	var wg sync.WaitGroup
+	wg.Add(goroutines)
+	results := make([]*proto.NetworkMapEnvelope, goroutines)
+	for i := 0; i < goroutines; i++ {
+		i := i
+		go func() {
+			defer wg.Done()
+			results[i] = EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+		}()
+	}
+	wg.Wait()
+
+	for i, got := range results {
+		require.NotNil(t, got, "goroutine %d returned nil", i)
+		require.True(t, envelopesEquivalent(expected, got),
+			"goroutine %d produced inequivalent envelope", i)
+	}
+}
+
+func TestEncodeNetworkMapEnvelope_GroupsByAccountSeqID(t *testing.T) {
+	c := newTestComponents()
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Groups, 2)
+
+	groupByID := map[uint32]*proto.GroupCompact{}
+	for _, g := range full.Groups {
+		groupByID[g.Id] = g
+	}
+	require.Contains(t, groupByID, uint32(1))
+	require.Contains(t, groupByID, uint32(2))
+	assert.Equal(t, "Src", groupByID[1].Name)
+	assert.Equal(t, "Dst", groupByID[2].Name)
+	assert.Len(t, groupByID[1].PeerIndexes, 1)
+	assert.Len(t, groupByID[2].PeerIndexes, 2)
+}
+
+func TestEncodeNetworkMapEnvelope_PolicyExpansion(t *testing.T) {
+	c := newTestComponents()
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Policies, 1)
+	pc := full.Policies[0]
+	assert.EqualValues(t, 10, pc.Id)
+	assert.Equal(t, proto.RuleAction_ACCEPT, pc.Action)
+	assert.Equal(t, proto.RuleProtocol_TCP, pc.Protocol)
+	assert.True(t, pc.Bidirectional)
+	assert.Equal(t, []uint32{22, 80}, pc.Ports)
+	require.Len(t, pc.PortRanges, 1)
+	assert.EqualValues(t, 8000, pc.PortRanges[0].Start)
+	assert.EqualValues(t, 8100, pc.PortRanges[0].End)
+	assert.Equal(t, []uint32{1}, pc.SourceGroupIds)
+	assert.Equal(t, []uint32{2}, pc.DestinationGroupIds)
+}
+
+func TestEncodeNetworkMapEnvelope_RouterIndexes(t *testing.T) {
+	c := newTestComponents()
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.RouterPeerIndexes, 1)
+	idx := full.RouterPeerIndexes[0]
+	require.Less(t, int(idx), len(full.Peers))
+	assert.Equal(t, "peerc", full.Peers[idx].DnsLabel)
+}
+
+func TestEncodeNetworkMapEnvelope_AgentVersionDedup(t *testing.T) {
+	c := newTestComponents()
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.AgentVersions, 3, "empty placeholder + 2 distinct versions")
+	assert.Equal(t, "", full.AgentVersions[0], "index 0 reserved for empty version")
+	assert.ElementsMatch(t, []string{"0.40.0", "0.25.0"}, full.AgentVersions[1:],
+		"two distinct versions, order depends on map iteration")
+
+	idxByLabel := map[string]uint32{}
+	for _, p := range full.Peers {
+		idxByLabel[p.DnsLabel] = p.AgentVersionIdx
+	}
+	assert.Equal(t, idxByLabel["peera"], idxByLabel["peerc"], "peers with the same agent version share an index")
+	assert.NotEqual(t, idxByLabel["peera"], idxByLabel["peerb"])
+}
+
+func TestEncodeNetworkMapEnvelope_DisabledPolicySkipped(t *testing.T) {
+	c := newTestComponents()
+	c.Policies[0].Enabled = false
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	assert.Empty(t, full.Policies)
+}
+
+func TestEncodeNetworkMapEnvelope_GroupZeroSeqIDSkipped(t *testing.T) {
+	c := newTestComponents()
+	c.Groups["group-src"].AccountSeqID = 0
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Groups, 1, "groups with AccountSeqID=0 are not yet persisted and must be skipped")
+	assert.EqualValues(t, 2, full.Groups[0].Id)
+
+	require.Len(t, full.Policies, 1)
+	pc := full.Policies[0]
+	assert.Empty(t, pc.SourceGroupIds, "rule references a group that was filtered out → no group id on wire")
+	assert.Equal(t, []uint32{2}, pc.DestinationGroupIds)
+}
+
+func TestEncodeNetworkMapEnvelope_TwoPeersSameMalformedKey(t *testing.T) {
+	// Both peers have nil WgPubKey after decode; canonicalize must still
+	// produce a stable order using DnsLabel as a tiebreaker, so 100 encodes
+	// canonicalize identically.
+	c := newTestComponents()
+	c.Peers["peer-a"].Key = "garbage-a-!!!"
+	c.Peers["peer-b"].Key = "garbage-b-!!!"
+
+	expected := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+	for i := 0; i < 100; i++ {
+		got := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+		require.True(t, envelopesEquivalent(expected, got),
+			"encode #%d with two same-key peers must canonicalize equivalently", i)
+	}
+}
+
+func TestEncodeNetworkMapEnvelope_MalformedWgKey(t *testing.T) {
+	c := newTestComponents()
+	c.Peers["peer-a"].Key = "not-base64-!!!"
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Peers, 3)
+
+	var byLabel = map[string]*proto.PeerCompact{}
+	for _, p := range full.Peers {
+		byLabel[p.DnsLabel] = p
+	}
+	assert.Nil(t, byLabel["peera"].WgPubKey, "peer with malformed key encodes nil WgPubKey")
+	assert.Len(t, byLabel["peerb"].WgPubKey, 32, "other peers retain their key")
+}
+
+func TestEncodeNetworkMapEnvelope_IPv6OnlyPeer(t *testing.T) {
+	c := newTestComponents()
+	v6Only := &nbpeer.Peer{
+		ID:       "peer-v6",
+		Key:      testWgKeyA,
+		IPv6:     netip.AddrFrom16([16]byte{0xfd, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9}),
+		DNSLabel: "peerv6",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+	c.Peers["peer-v6"] = v6Only
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	var found *proto.PeerCompact
+	for _, p := range full.Peers {
+		if p.DnsLabel == "peerv6" {
+			found = p
+		}
+	}
+	require.NotNil(t, found, "ipv6-only peer must be present")
+	assert.Empty(t, found.Ip, "no IPv4 address → empty Ip")
+	assert.Len(t, found.Ipv6, 16)
+}
+
+func TestEncodeNetworkMapEnvelope_PeerWithoutIP(t *testing.T) {
+	c := newTestComponents()
+	c.Peers["peer-noip"] = &nbpeer.Peer{
+		ID:       "peer-noip",
+		Key:      testWgKeyA,
+		DNSLabel: "peernoip",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	var found *proto.PeerCompact
+	for _, p := range full.Peers {
+		if p.DnsLabel == "peernoip" {
+			found = p
+		}
+	}
+	require.NotNil(t, found)
+	assert.Empty(t, found.Ip)
+	assert.Empty(t, found.Ipv6)
+}
+
+func TestEncodeNetworkMapEnvelope_EmptyInput(t *testing.T) {
+	c := &types.NetworkMapComponents{
+		Network: &types.Network{Identifier: "x", Net: net.IPNet{IP: net.IP{100, 64, 0, 0}, Mask: net.CIDRMask(10, 32)}},
+	}
+
+	env := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c})
+
+	full := env.GetFull()
+	require.NotNil(t, full)
+	assert.Empty(t, full.Peers)
+	assert.Empty(t, full.Groups)
+	assert.Empty(t, full.Policies)
+	assert.Empty(t, full.RouterPeerIndexes)
+	require.NotNil(t, full.AccountSettings, "AccountSettingsCompact must always be emitted (client dereferences it unconditionally)")
+}
+
+func TestEncodeNetworkMapEnvelope_PeerLoginExpirationFields(t *testing.T) {
+	c := newTestComponents()
+	now := time.Date(2024, 1, 2, 3, 4, 5, 0, time.UTC)
+	c.Peers["peer-a"].UserID = "user-1"
+	c.Peers["peer-a"].LoginExpirationEnabled = true
+	c.Peers["peer-a"].LastLogin = &now
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	var pa *proto.PeerCompact
+	for _, p := range full.Peers {
+		if p.DnsLabel == "peera" {
+			pa = p
+		}
+	}
+	require.NotNil(t, pa)
+	assert.True(t, pa.AddedWithSsoLogin)
+	assert.True(t, pa.LoginExpirationEnabled)
+	assert.Equal(t, now.UnixNano(), pa.LastLoginUnixNano)
+
+	// peer-b has no UserID and no LastLogin → all fields zero-value.
+	var pb *proto.PeerCompact
+	for _, p := range full.Peers {
+		if p.DnsLabel == "peerb" {
+			pb = p
+		}
+	}
+	require.NotNil(t, pb)
+	assert.False(t, pb.AddedWithSsoLogin)
+	assert.False(t, pb.LoginExpirationEnabled)
+	assert.Zero(t, pb.LastLoginUnixNano)
+}
+
+func TestEncodeNetworkMapEnvelope_RoutesRoundTrip(t *testing.T) {
+	c := newTestComponents()
+	c.Routes = []*nbroute.Route{
+		{
+			ID:                  "route-peer",
+			AccountSeqID:        100,
+			NetID:               "net-A",
+			Description:         "via peer-c",
+			Network:             netip.MustParsePrefix("10.0.0.0/16"),
+			Peer:                "peer-c", // peer ID, not WG key
+			Groups:              []string{"group-src"},
+			AccessControlGroups: []string{"group-dst"},
+			Enabled:             true,
+		},
+		{
+			ID:           "route-peergroup",
+			AccountSeqID: 101,
+			NetID:        "net-B",
+			Network:      netip.MustParsePrefix("10.1.0.0/16"),
+			PeerGroups:   []string{"group-src", "group-dst"},
+			Enabled:      true,
+		},
+		{
+			ID:           "route-no-seq",
+			AccountSeqID: 0, // unset — should still ship (no group seq filter on routes)
+			Network:      netip.MustParsePrefix("10.2.0.0/16"),
+			Enabled:      true,
+		},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Routes, 3)
+	byNetID := map[string]*proto.RouteRaw{}
+	for _, r := range full.Routes {
+		byNetID[r.NetId] = r
+	}
+
+	r1 := byNetID["net-A"]
+	require.NotNil(t, r1)
+	assert.True(t, r1.PeerIndexSet, "route with peer must set peer_index_set")
+	require.Less(t, int(r1.PeerIndex), len(full.Peers))
+	assert.Equal(t, "peerc", full.Peers[r1.PeerIndex].DnsLabel)
+	assert.Equal(t, []uint32{1}, r1.GroupIds, "group-src has AccountSeqID 1")
+	assert.Equal(t, []uint32{2}, r1.AccessControlGroupIds, "group-dst has AccountSeqID 2")
+	assert.Empty(t, r1.PeerGroupIds)
+
+	r2 := byNetID["net-B"]
+	require.NotNil(t, r2)
+	assert.False(t, r2.PeerIndexSet, "route with peer_groups must NOT set peer_index_set")
+	assert.ElementsMatch(t, []uint32{1, 2}, r2.PeerGroupIds)
+}
+
+func TestEncodeNetworkMapEnvelope_RouteWithMissingPeerLeavesIndexUnset(t *testing.T) {
+	c := newTestComponents()
+	c.Routes = []*nbroute.Route{{
+		ID:           "route-x",
+		AccountSeqID: 100,
+		Peer:         "peer-not-in-components",
+		Network:      netip.MustParsePrefix("10.0.0.0/16"),
+		Enabled:      true,
+	}}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Routes, 1)
+	assert.False(t, full.Routes[0].PeerIndexSet,
+		"missing peer reference must not pretend to point at peer index 0")
+}
+
+func TestEncodeNetworkMapEnvelope_ResourceOnlyPolicyShippedAndIndexed(t *testing.T) {
+	c := newTestComponents()
+	// Policy that exists ONLY in ResourcePoliciesMap, not in c.Policies. This
+	// is the I1 case — without unionPolicies the encoder would silently
+	// drop it from the wire.
+	resourceOnlyPolicy := &types.Policy{
+		ID: "pol-resource", AccountSeqID: 99, Enabled: true,
+		Rules: []*types.PolicyRule{{
+			ID: "rule-r", Enabled: true, Action: types.PolicyTrafficActionAccept,
+			Protocol:     types.PolicyRuleProtocolTCP,
+			Sources:      []string{"group-src"},
+			Destinations: []string{"group-dst"},
+		}},
+	}
+	c.ResourcePoliciesMap = map[string][]*types.Policy{
+		"resource-x": {c.Policies[0], resourceOnlyPolicy}, // shared + resource-only
+	}
+	// Resource must appear in components.NetworkResources with a seq id —
+	// encoder uses that to translate the xid map key to uint32.
+	c.NetworkResources = []*resourceTypes.NetworkResource{
+		{ID: "resource-x", AccountSeqID: 77, Name: "res-x", Enabled: true},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.Policies, 2, "encoded policies must include both peer-traffic and resource-only")
+
+	policyByID := map[uint32]*proto.PolicyCompact{}
+	policyIdxByID := map[uint32]uint32{}
+	for i, p := range full.Policies {
+		policyByID[p.Id] = p
+		policyIdxByID[p.Id] = uint32(i)
+	}
+	require.Contains(t, policyByID, uint32(10), "original peer-traffic policy id 10")
+	require.Contains(t, policyByID, uint32(99), "resource-only policy id 99")
+
+	require.Contains(t, full.ResourcePoliciesMap, uint32(77))
+	idxs := full.ResourcePoliciesMap[77].Indexes
+	require.Len(t, idxs, 2)
+	assert.ElementsMatch(t, []uint32{policyIdxByID[10], policyIdxByID[99]}, idxs,
+		"resource policies map must reference both wire policy indexes")
+}
+
+func TestEncodeNetworkMapEnvelope_NameServerGroups(t *testing.T) {
+	c := newTestComponents()
+	c.NameServerGroups = []*nbdns.NameServerGroup{{
+		ID: "nsg-1", AccountSeqID: 50, Name: "Main", Description: "primary",
+		NameServers: []nbdns.NameServer{{
+			IP: netip.MustParseAddr("8.8.8.8"), NSType: nbdns.UDPNameServerType, Port: 53,
+		}},
+		Groups:  []string{"group-src", "group-not-persisted"},
+		Primary: true, Enabled: true,
+		Domains: []string{"corp.example"},
+	}}
+	c.Groups["group-not-persisted"] = &types.Group{ID: "group-not-persisted", AccountSeqID: 0, Peers: []string{}}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.NameserverGroups, 1)
+	nsg := full.NameserverGroups[0]
+	assert.EqualValues(t, 50, nsg.Id)
+	assert.Equal(t, "Main", nsg.Name)
+	assert.True(t, nsg.Primary)
+	require.Len(t, nsg.Nameservers, 1)
+	assert.Equal(t, "8.8.8.8", nsg.Nameservers[0].IP)
+	assert.Equal(t, []uint32{1}, nsg.GroupIds, "group-not-persisted is filtered out (AccountSeqID=0)")
+}
+
+func TestEncodeNetworkMapEnvelope_PostureFailedPeers(t *testing.T) {
+	c := newTestComponents()
+	c.PostureCheckXIDToSeq = map[string]uint32{"check-1": 33}
+	c.PostureFailedPeers = map[string]map[string]struct{}{
+		"check-1": {
+			"peer-a":              {},
+			"peer-b":              {},
+			"peer-not-in-account": {},
+		},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Contains(t, full.PostureFailedPeers, uint32(33))
+	idxs := full.PostureFailedPeers[33].PeerIndexes
+	assert.Len(t, idxs, 2, "missing peer is silently dropped (filterPostureFailedPeers guarantees presence in real data)")
+}
+
+func TestEncodeNetworkMapEnvelope_RoutersMap(t *testing.T) {
+	c := newTestComponents()
+	c.NetworkXIDToSeq = map[string]uint32{"net-1": 5}
+	c.RoutersMap = map[string]map[string]*routerTypes.NetworkRouter{
+		"net-1": {
+			"peer-c": {
+				ID: "router-1", AccountSeqID: 200,
+				Peer: "peer-c", Masquerade: true, Metric: 10, Enabled: true,
+			},
+		},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Contains(t, full.RoutersMap, uint32(5))
+	entries := full.RoutersMap[5].Entries
+	require.Len(t, entries, 1)
+	e := entries[0]
+	assert.EqualValues(t, 200, e.Id)
+	assert.True(t, e.PeerIndexSet)
+	require.Less(t, int(e.PeerIndex), len(full.Peers))
+	assert.Equal(t, "peerc", full.Peers[e.PeerIndex].DnsLabel)
+	assert.True(t, e.Masquerade)
+	assert.EqualValues(t, 10, e.Metric)
+	assert.True(t, e.Enabled)
+}
+
+func TestEncodeNetworkMapEnvelope_RouterPeerNotInComponentsPeers(t *testing.T) {
+	// Router peer in c.RouterPeers but NOT in c.Peers (validation may have
+	// filtered it). indexRouterPeers runs before encodeRoutersMap, so the
+	// peer_index reference must still resolve.
+	c := newTestComponents()
+	delete(c.Peers, "peer-c")
+	routerPeer := &nbpeer.Peer{
+		ID: "peer-c", Key: testWgKeyC, IP: netip.AddrFrom4([4]byte{100, 64, 0, 3}),
+		DNSLabel: "peerc", Meta: nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+	c.RouterPeers = map[string]*nbpeer.Peer{"peer-c": routerPeer}
+	c.NetworkXIDToSeq = map[string]uint32{"net-1": 5}
+	c.RoutersMap = map[string]map[string]*routerTypes.NetworkRouter{
+		"net-1": {"peer-c": {ID: "r-1", AccountSeqID: 1, Peer: "peer-c", Enabled: true}},
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Contains(t, full.RoutersMap, uint32(5))
+	require.Len(t, full.RoutersMap[5].Entries, 1)
+	e := full.RoutersMap[5].Entries[0]
+	assert.True(t, e.PeerIndexSet, "router peer must be indexed even when not in c.Peers")
+}
+
+func TestEncodeNetworkMapEnvelope_DNSSettingsFiltersUnpersistedGroups(t *testing.T) {
+	c := newTestComponents()
+	c.DNSSettings = &types.DNSSettings{
+		DisabledManagementGroups: []string{"group-src", "group-missing", "group-no-seq"},
+	}
+	c.Groups["group-no-seq"] = &types.Group{ID: "group-no-seq", AccountSeqID: 0}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.NotNil(t, full.DnsSettings)
+	assert.Equal(t, []uint32{1}, full.DnsSettings.DisabledManagementGroupIds,
+		"only group-src (AccountSeqID=1) survives — missing and unpersisted are dropped")
+}
+
+func TestEncodeNetworkMapEnvelope_GroupIDToUserIDs(t *testing.T) {
+	c := newTestComponents()
+	c.GroupIDToUserIDs = map[string][]string{
+		"group-src":     {"user-1", "user-2"},
+		"group-no-seq":  {"user-3"}, // group not persisted → drop
+		"group-missing": {"user-4"}, // group not in components → drop
+	}
+	c.Groups["group-no-seq"] = &types.Group{ID: "group-no-seq", AccountSeqID: 0}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.Len(t, full.GroupIdToUserIds, 1, "only persisted+present groups survive")
+	require.Contains(t, full.GroupIdToUserIds, uint32(1))
+	assert.ElementsMatch(t, []string{"user-1", "user-2"}, full.GroupIdToUserIds[1].UserIds)
+}
+
+func TestToProxyPatch_EmptyInputReturnsNil(t *testing.T) {
+	assert.Nil(t, toProxyPatch(nil, "netbird.cloud", false, false))
+	assert.Nil(t, toProxyPatch(&types.NetworkMap{}, "netbird.cloud", false, false),
+		"empty NetworkMap (no peers, rules, routes etc) → nil patch so proto3 omits the field")
+}
+
+func TestToProxyPatch_PopulatesAllFields(t *testing.T) {
+	nm := &types.NetworkMap{
+		Peers: []*nbpeer.Peer{{
+			ID: "ext-peer", Key: testWgKeyA, IP: netip.AddrFrom4([4]byte{100, 64, 0, 9}),
+			DNSLabel: "extpeer", Meta: nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+		}},
+		FirewallRules: []*types.FirewallRule{{
+			PeerIP: "100.64.0.9", Action: "accept", Direction: 0, Protocol: "tcp",
+		}},
+	}
+
+	patch := toProxyPatch(nm, "netbird.cloud", false, false)
+
+	require.NotNil(t, patch)
+	assert.Len(t, patch.Peers, 1)
+	assert.Len(t, patch.FirewallRules, 1)
+}
+
+// TestEncodeNetworkMapEnvelope_ProxyPatchPropagated covers the ProxyPatch
+// pass-through in both encoder branches (normal path + nil-Components
+// graceful-degrade). Without this test a regression that drops `ProxyPatch:`
+// from one of the struct literals in components_encoder.go would slip past CI.
+func TestEncodeNetworkMapEnvelope_ProxyPatchPropagated(t *testing.T) {
+	patch := &proto.ProxyPatch{
+		ForwardingRules: []*proto.ForwardingRule{{
+			Protocol:          proto.RuleProtocol_TCP,
+			DestinationPort:   &proto.PortInfo{PortSelection: &proto.PortInfo_Port{Port: 80}},
+			TranslatedAddress: net.IPv4(10, 0, 0, 1).To4(),
+			TranslatedPort:    &proto.PortInfo{PortSelection: &proto.PortInfo_Port{Port: 8080}},
+		}},
+	}
+
+	t.Run("normal_path", func(t *testing.T) {
+		c := newTestComponents()
+		full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{
+			Components: c,
+			ProxyPatch: patch,
+		}).GetFull()
+
+		require.NotNil(t, full.ProxyPatch, "ProxyPatch must propagate through the normal encode path")
+		assert.Len(t, full.ProxyPatch.ForwardingRules, 1)
+	})
+
+	t.Run("nil_components_graceful_degrade", func(t *testing.T) {
+		full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{
+			Components: nil,
+			ProxyPatch: patch,
+		}).GetFull()
+
+		require.NotNil(t, full.ProxyPatch, "ProxyPatch must propagate through the nil-Components branch too")
+		assert.Len(t, full.ProxyPatch.ForwardingRules, 1)
+	})
+}
+
+func TestEncodeNetworkMapEnvelope_NilComponentsGracefulDegrade(t *testing.T) {
+	// nil Components → minimal envelope, no crash. Matches the legacy
+	// account_components.go:43 behaviour for missing/unvalidated peers.
+	env := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{
+		Components: nil,
+		DNSDomain:  "netbird.cloud",
+	})
+
+	require.NotNil(t, env)
+	full := env.GetFull()
+	require.NotNil(t, full)
+	require.NotNil(t, full.AccountSettings, "AccountSettings must always be non-nil")
+	assert.Equal(t, "netbird.cloud", full.DnsDomain)
+	assert.Empty(t, full.Peers)
+	assert.Empty(t, full.Policies)
+}
+
+func TestEncodeNetworkMapEnvelope_AccountSettingsAlwaysEmitted(t *testing.T) {
+	c := &types.NetworkMapComponents{
+		Network: &types.Network{Identifier: "x", Net: net.IPNet{IP: net.IP{100, 64, 0, 0}, Mask: net.CIDRMask(10, 32)}},
+		// AccountSettings deliberately nil
+	}
+
+	full := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{Components: c}).GetFull()
+
+	require.NotNil(t, full.AccountSettings, "client dereferences AccountSettings unconditionally during Calculate(); a nil here would crash the receiver")
+	assert.False(t, full.AccountSettings.PeerLoginExpirationEnabled)
+	assert.Zero(t, full.AccountSettings.PeerLoginExpirationNs)
+}

management/internals/shared/grpc/components_envelope_response.go

@@ -0,0 +1,193 @@
+package grpc
+
+import (
+	"context"
+
+	integrationsConfig "github.com/netbirdio/management-integrations/integrations/config"
+
+	"github.com/netbirdio/netbird/client/ssh/auth"
+	nbconfig "github.com/netbirdio/netbird/management/internals/server/config"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/posture"
+	"github.com/netbirdio/netbird/management/server/types"
+	"github.com/netbirdio/netbird/shared/management/networkmap"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// ToComponentSyncResponse builds a SyncResponse carrying the compact
+// NetworkMapEnvelope for capability-aware peers. The legacy proto.NetworkMap
+// field is intentionally left empty — capable peers ignore it and the
+// envelope alone is the authoritative wire shape.
+//
+// PeerConfig is computed once server-side using the receiving peer's own
+// account-level network metadata. EnableSSH inside PeerConfig is left at
+// peer.SSHEnabled (the peer's local setting); account-policy-driven SSH is
+// computed by the client from the envelope's GroupIDToUserIDs / AllowedUserIDs
+// inside Calculate(), so the SshConfig.SshEnabled bit may flip true on the
+// client even though the server-side PeerConfig reports false.
+func ToComponentSyncResponse(
+	ctx context.Context,
+	config *nbconfig.Config,
+	httpConfig *nbconfig.HttpServerConfig,
+	deviceFlowConfig *nbconfig.DeviceAuthorizationFlow,
+	peer *nbpeer.Peer,
+	turnCredentials *Token,
+	relayCredentials *Token,
+	components *types.NetworkMapComponents,
+	proxyPatch *types.NetworkMap,
+	dnsName string,
+	checks []*posture.Checks,
+	settings *types.Settings,
+	extraSettings *types.ExtraSettings,
+	peerGroups []string,
+	dnsFwdPort int64,
+) *proto.SyncResponse {
+	network := networkOrZero(components)
+	enableSSH := computeSSHEnabledForPeer(components, peer)
+	peerConfig := toPeerConfig(peer, network, dnsName, settings, httpConfig, deviceFlowConfig, enableSSH)
+
+	includeIPv6 := peer.SupportsIPv6() && peer.IPv6.IsValid()
+	useSourcePrefixes := peer.SupportsSourcePrefixes()
+
+	userIDClaim := auth.DefaultUserIDClaim
+	if httpConfig != nil && httpConfig.AuthUserIDClaim != "" {
+		userIDClaim = httpConfig.AuthUserIDClaim
+	}
+
+	envelope := EncodeNetworkMapEnvelope(ComponentsEnvelopeInput{
+		Components:       components,
+		PeerConfig:       peerConfig,
+		DNSDomain:        dnsName,
+		DNSForwarderPort: dnsFwdPort,
+		UserIDClaim:      userIDClaim,
+		ProxyPatch:       toProxyPatch(proxyPatch, dnsName, includeIPv6, useSourcePrefixes),
+	})
+
+	resp := &proto.SyncResponse{
+		PeerConfig:         peerConfig,
+		NetworkMapEnvelope: envelope,
+		Checks:             toProtocolChecks(ctx, checks),
+	}
+
+	nbConfig := toNetbirdConfig(config, turnCredentials, relayCredentials, extraSettings)
+	resp.NetbirdConfig = integrationsConfig.ExtendNetBirdConfig(peer.ID, peerGroups, nbConfig, extraSettings)
+
+	return resp
+}
+
+// networkOrZero returns components.Network or a zero Network — toPeerConfig
+// dereferences network.Net which would panic on nil.
+func networkOrZero(c *types.NetworkMapComponents) *types.Network {
+	if c == nil || c.Network == nil {
+		return &types.Network{}
+	}
+	return c.Network
+}
+
+// toProxyPatch converts a proxy-injected *types.NetworkMap into the wire
+// patch the components envelope ships alongside. Returns nil when there are
+// no fragments to merge — proto3 omits a nil message field, so the receiver
+// sees no patch and skips the merge step entirely.
+//
+// We reuse the legacy proto-conversion helpers (toProtocolRoutes,
+// toProtocolFirewallRules, toProtocolRoutesFirewallRules,
+// appendRemotePeerConfig, ForwardingRule.ToProto) because the proxy
+// delivers fragments pre-expanded — there's no raw component shape to
+// derive them from. Components purity isn't violated: proxy data isn't
+// policy-graph-derived, it's externally injected post-Calculate, so the
+// client merges it on top of its locally-computed NetworkMap.
+func toProxyPatch(nm *types.NetworkMap, dnsName string, includeIPv6, useSourcePrefixes bool) *proto.ProxyPatch {
+	if nm == nil {
+		return nil
+	}
+	if len(nm.Peers) == 0 && len(nm.OfflinePeers) == 0 && len(nm.FirewallRules) == 0 &&
+		len(nm.Routes) == 0 && len(nm.RoutesFirewallRules) == 0 && len(nm.ForwardingRules) == 0 {
+		return nil
+	}
+
+	patch := &proto.ProxyPatch{
+		Peers:              networkmap.AppendRemotePeerConfig(nil, nm.Peers, dnsName, includeIPv6),
+		OfflinePeers:       networkmap.AppendRemotePeerConfig(nil, nm.OfflinePeers, dnsName, includeIPv6),
+		FirewallRules:      networkmap.ToProtocolFirewallRules(nm.FirewallRules, includeIPv6, useSourcePrefixes),
+		Routes:             networkmap.ToProtocolRoutes(nm.Routes),
+		RouteFirewallRules: networkmap.ToProtocolRoutesFirewallRules(nm.RoutesFirewallRules),
+	}
+	if len(nm.ForwardingRules) > 0 {
+		patch.ForwardingRules = make([]*proto.ForwardingRule, 0, len(nm.ForwardingRules))
+		for _, r := range nm.ForwardingRules {
+			patch.ForwardingRules = append(patch.ForwardingRules, r.ToProto())
+		}
+	}
+	return patch
+}
+
+// computeSSHEnabledForPeer mirrors the SSH-server-activation bit that
+// Calculate() folds into NetworkMap.EnableSSH. Components-format peers
+// receive a freshly-computed PeerConfig.SshConfig.SshEnabled at sync time;
+// without this helper the field would be incorrectly false for any peer
+// that's the destination of an SSH-enabling policy without having
+// peer.SSHEnabled set locally.
+//
+// Mirrors the two activation paths in Calculate() (`networkmap_components.go`
+// `getPeerConnectionResources`):
+//  1. Explicit: rule.Protocol == NetbirdSSH and peer is in the rule's
+//     destinations.
+//  2. Legacy implicit: rule covers TCP/22 or TCP/22022 (or ALL), peer is in
+//     destinations, AND the peer has SSHEnabled set locally — this is the
+//     "allow-all/TCP-22 implies SSH activation for SSH-capable peers" path.
+//
+// The full SSH AuthorizedUsers map is still produced by the client when it
+// runs Calculate() over the envelope.
+func computeSSHEnabledForPeer(c *types.NetworkMapComponents, peer *nbpeer.Peer) bool {
+	if c == nil || peer == nil {
+		return false
+	}
+	// Mirror Calculate's `getAllPeersFromGroups` invariant: target peer must
+	// exist in c.Peers, otherwise no rule applies to it.
+	if _, ok := c.Peers[peer.ID]; !ok {
+		return false
+	}
+	for _, policy := range c.Policies {
+		if policy == nil || !policy.Enabled {
+			continue
+		}
+		for _, rule := range policy.Rules {
+			if ruleEnablesSSHForPeer(c, rule, peer) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// ruleEnablesSSHForPeer returns true when rule is active, targets peer, and
+// either explicitly authorises SSH or covers the legacy TCP/22 path while the
+// peer itself has SSH enabled locally.
+func ruleEnablesSSHForPeer(c *types.NetworkMapComponents, rule *types.PolicyRule, peer *nbpeer.Peer) bool {
+	if rule == nil || !rule.Enabled {
+		return false
+	}
+	if !peerInDestinations(c, rule, peer.ID) {
+		return false
+	}
+	if rule.Protocol == types.PolicyRuleProtocolNetbirdSSH {
+		return true
+	}
+	return peer.SSHEnabled && types.PolicyRuleImpliesLegacySSH(rule)
+}
+
+// peerInDestinations reports whether peerID is in any of rule.Destinations'
+// groups (or matches DestinationResource if it's a peer-typed resource —
+// for non-peer types Calculate falls through to group lookup, so we mirror
+// that exactly to avoid silent divergence).
+func peerInDestinations(c *types.NetworkMapComponents, rule *types.PolicyRule, peerID string) bool {
+	if rule.DestinationResource.Type == types.ResourceTypePeer && rule.DestinationResource.ID != "" {
+		return rule.DestinationResource.ID == peerID
+	}
+	for _, groupID := range rule.Destinations {
+		if c.IsPeerInGroup(peerID, groupID) {
+			return true
+		}
+	}
+	return false
+}

management/internals/shared/grpc/components_envelope_response_test.go

@@ -0,0 +1,186 @@
+package grpc
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+)
+
+// TestComputeSSHEnabledForPeer covers both Calculate-mirroring branches:
+// explicit NetbirdSSH protocol, and the legacy implicit case where a
+// TCP/22 (or 22022 / ALL / port-range-covering-22) rule activates SSH when
+// the destination peer has SSHEnabled=true locally. Belt-and-suspenders for
+// the B1 fix that the prod-DB equivalence test alone wouldn't have caught
+// if no account had this combination.
+func TestComputeSSHEnabledForPeer(t *testing.T) {
+	const targetPeerID = "target"
+	const targetGroupID = "g_dst"
+
+	mkComponents := func(rule *types.PolicyRule, sshEnabled bool) (*types.NetworkMapComponents, *nbpeer.Peer) {
+		peer := &nbpeer.Peer{ID: targetPeerID, SSHEnabled: sshEnabled}
+		group := &types.Group{ID: targetGroupID, Name: "dst", Peers: []string{targetPeerID}}
+		return &types.NetworkMapComponents{
+			Peers:  map[string]*nbpeer.Peer{targetPeerID: peer},
+			Groups: map[string]*types.Group{targetGroupID: group},
+			Policies: []*types.Policy{{
+				ID:      "p",
+				Enabled: true,
+				Rules:   []*types.PolicyRule{rule},
+			}},
+		}, peer
+	}
+
+	cases := []struct {
+		name        string
+		peerSSH     bool
+		rule        types.PolicyRule
+		wantEnabled bool
+	}{
+		{
+			name:    "explicit-netbird-ssh-activates-regardless-of-peer-ssh",
+			peerSSH: false,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolNetbirdSSH,
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "implicit-tcp-22-with-peer-ssh",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolTCP, Ports: []string{"22"},
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "implicit-tcp-22-without-peer-ssh-disabled",
+			peerSSH: false,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolTCP, Ports: []string{"22"},
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: false,
+		},
+		{
+			name:    "implicit-tcp-22022-with-peer-ssh",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolTCP, Ports: []string{"22022"},
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "implicit-all-protocol-with-peer-ssh",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolALL,
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "implicit-port-range-covers-22",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled:      true,
+				Protocol:     types.PolicyRuleProtocolTCP,
+				PortRanges:   []types.RulePortRange{{Start: 20, End: 30}},
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "tcp-80-no-ssh",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolTCP, Ports: []string{"80"},
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: false,
+		},
+		{
+			name:    "disabled-rule-skipped",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: false, Protocol: types.PolicyRuleProtocolNetbirdSSH,
+				Destinations: []string{targetGroupID},
+			},
+			wantEnabled: false,
+		},
+		{
+			name:    "peer-not-in-destinations",
+			peerSSH: true,
+			rule: types.PolicyRule{
+				Enabled: true, Protocol: types.PolicyRuleProtocolNetbirdSSH,
+				Destinations: []string{"g_other"}, // target not in this group
+			},
+			wantEnabled: false,
+		},
+		{
+			name:    "peer-typed-destination-resource-matches",
+			peerSSH: false,
+			rule: types.PolicyRule{
+				Enabled:             true,
+				Protocol:            types.PolicyRuleProtocolNetbirdSSH,
+				DestinationResource: types.Resource{ID: targetPeerID, Type: types.ResourceTypePeer},
+			},
+			wantEnabled: true,
+		},
+		{
+			name:    "non-peer-destination-resource-falls-through-to-groups",
+			peerSSH: false,
+			rule: types.PolicyRule{
+				Enabled:             true,
+				Protocol:            types.PolicyRuleProtocolNetbirdSSH,
+				DestinationResource: types.Resource{ID: targetPeerID, Type: "host"}, // wrong type
+				Destinations:        []string{targetGroupID},                        // saved by group fallback
+			},
+			wantEnabled: true,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			c, peer := mkComponents(&tc.rule, tc.peerSSH)
+			got := computeSSHEnabledForPeer(c, peer)
+			assert.Equal(t, tc.wantEnabled, got)
+		})
+	}
+}
+
+// TestComputeSSHEnabledForPeer_TargetMissingFromComponents covers the
+// belt-and-suspenders presence guard mirroring Calculate's
+// getAllPeersFromGroups invariant.
+func TestComputeSSHEnabledForPeer_TargetMissingFromComponents(t *testing.T) {
+	peer := &nbpeer.Peer{ID: "missing", SSHEnabled: true}
+	c := &types.NetworkMapComponents{
+		Peers: map[string]*nbpeer.Peer{}, // target peer NOT present
+		Groups: map[string]*types.Group{
+			"g": {ID: "g", Peers: []string{"missing"}},
+		},
+		Policies: []*types.Policy{{
+			ID: "p", Enabled: true,
+			Rules: []*types.PolicyRule{{
+				Enabled: true, Protocol: types.PolicyRuleProtocolNetbirdSSH,
+				Destinations: []string{"g"},
+			}},
+		}},
+	}
+	assert.False(t, computeSSHEnabledForPeer(c, peer),
+		"missing target peer must short-circuit to false, not consult policies")
+}
+
+// TestComputeSSHEnabledForPeer_NilInputs guards the cheap nil-checks at
+// function entry — Calculate doesn't accept nil either, but the helper is
+// exported indirectly via ToComponentSyncResponse and may receive nil
+// components on graceful-degrade paths.
+func TestComputeSSHEnabledForPeer_NilInputs(t *testing.T) {
+	assert.False(t, computeSSHEnabledForPeer(nil, &nbpeer.Peer{ID: "x"}))
+	assert.False(t, computeSSHEnabledForPeer(&types.NetworkMapComponents{}, nil))
+}

management/internals/shared/grpc/conversion.go

@@ -7,23 +7,18 @@ import (
 	"net/url"
 	"strings"
 
-	log "github.com/sirupsen/logrus"
-	goproto "google.golang.org/protobuf/proto"
-
 	integrationsConfig "github.com/netbirdio/management-integrations/integrations/config"
 
 	"github.com/netbirdio/netbird/client/ssh/auth"
 
-	nbdns "github.com/netbirdio/netbird/dns"
 	"github.com/netbirdio/netbird/management/internals/controllers/network_map/controller/cache"
 	nbconfig "github.com/netbirdio/netbird/management/internals/server/config"
 	nbpeer "github.com/netbirdio/netbird/management/server/peer"
 	"github.com/netbirdio/netbird/management/server/posture"
 	"github.com/netbirdio/netbird/management/server/types"
-	nbroute "github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/shared/management/networkmap"
 	"github.com/netbirdio/netbird/shared/management/proto"
 	"github.com/netbirdio/netbird/shared/netiputil"
-	"github.com/netbirdio/netbird/shared/sshauth"
 )
 
 func toNetbirdConfig(config *nbconfig.Config, turnCredentials *Token, relayToken *Token, extraSettings *types.ExtraSettings) *proto.NetbirdConfig {
@@ -138,8 +133,8 @@ func ToSyncResponse(ctx context.Context, config *nbconfig.Config, httpConfig *nb
 		PeerConfig: toPeerConfig(peer, networkMap.Network, dnsName, settings, httpConfig, deviceFlowConfig, networkMap.EnableSSH),
 		NetworkMap: &proto.NetworkMap{
 			Serial:     networkMap.Network.CurrentSerial(),
-			Routes:     toProtocolRoutes(networkMap.Routes),
-			DNSConfig:  toProtocolDNSConfig(networkMap.DNSConfig, dnsCache, dnsFwdPort),
+			Routes:     networkmap.ToProtocolRoutes(networkMap.Routes),
+			DNSConfig:  networkmap.ToProtocolDNSConfig(networkMap.DNSConfig, dnsCache, dnsFwdPort),
 			PeerConfig: toPeerConfig(peer, networkMap.Network, dnsName, settings, httpConfig, deviceFlowConfig, networkMap.EnableSSH),
 		},
 		Checks: toProtocolChecks(ctx, checks),
@@ -152,19 +147,19 @@ func ToSyncResponse(ctx context.Context, config *nbconfig.Config, httpConfig *nb
 	response.NetworkMap.PeerConfig = response.PeerConfig
 
 	remotePeers := make([]*proto.RemotePeerConfig, 0, len(networkMap.Peers)+len(networkMap.OfflinePeers))
-	remotePeers = appendRemotePeerConfig(remotePeers, networkMap.Peers, dnsName, includeIPv6)
+	remotePeers = networkmap.AppendRemotePeerConfig(remotePeers, networkMap.Peers, dnsName, includeIPv6)
 	response.RemotePeers = remotePeers
 	response.NetworkMap.RemotePeers = remotePeers
 	response.RemotePeersIsEmpty = len(remotePeers) == 0
 	response.NetworkMap.RemotePeersIsEmpty = response.RemotePeersIsEmpty
 
-	response.NetworkMap.OfflinePeers = appendRemotePeerConfig(nil, networkMap.OfflinePeers, dnsName, includeIPv6)
+	response.NetworkMap.OfflinePeers = networkmap.AppendRemotePeerConfig(nil, networkMap.OfflinePeers, dnsName, includeIPv6)
 
-	firewallRules := toProtocolFirewallRules(networkMap.FirewallRules, includeIPv6, useSourcePrefixes)
+	firewallRules := networkmap.ToProtocolFirewallRules(networkMap.FirewallRules, includeIPv6, useSourcePrefixes)
 	response.NetworkMap.FirewallRules = firewallRules
 	response.NetworkMap.FirewallRulesIsEmpty = len(firewallRules) == 0
 
-	routesFirewallRules := toProtocolRoutesFirewallRules(networkMap.RoutesFirewallRules)
+	routesFirewallRules := networkmap.ToProtocolRoutesFirewallRules(networkMap.RoutesFirewallRules)
 	response.NetworkMap.RoutesFirewallRules = routesFirewallRules
 	response.NetworkMap.RoutesFirewallRulesIsEmpty = len(routesFirewallRules) == 0
 
@@ -177,7 +172,7 @@ func ToSyncResponse(ctx context.Context, config *nbconfig.Config, httpConfig *nb
 	}
 
 	if networkMap.AuthorizedUsers != nil {
-		hashedUsers, machineUsers := buildAuthorizedUsersProto(ctx, networkMap.AuthorizedUsers)
+		hashedUsers, machineUsers := networkmap.BuildAuthorizedUsersProto(ctx, networkMap.AuthorizedUsers)
 		userIDClaim := auth.DefaultUserIDClaim
 		if httpConfig != nil && httpConfig.AuthUserIDClaim != "" {
 			userIDClaim = httpConfig.AuthUserIDClaim
@@ -188,78 +183,6 @@ func ToSyncResponse(ctx context.Context, config *nbconfig.Config, httpConfig *nb
 	return response
 }
 
-func buildAuthorizedUsersProto(ctx context.Context, authorizedUsers map[string]map[string]struct{}) ([][]byte, map[string]*proto.MachineUserIndexes) {
-	userIDToIndex := make(map[string]uint32)
-	var hashedUsers [][]byte
-	machineUsers := make(map[string]*proto.MachineUserIndexes, len(authorizedUsers))
-
-	for machineUser, users := range authorizedUsers {
-		indexes := make([]uint32, 0, len(users))
-		for userID := range users {
-			idx, exists := userIDToIndex[userID]
-			if !exists {
-				hash, err := sshauth.HashUserID(userID)
-				if err != nil {
-					log.WithContext(ctx).Errorf("failed to hash user id %s: %v", userID, err)
-					continue
-				}
-				idx = uint32(len(hashedUsers))
-				userIDToIndex[userID] = idx
-				hashedUsers = append(hashedUsers, hash[:])
-			}
-			indexes = append(indexes, idx)
-		}
-		machineUsers[machineUser] = &proto.MachineUserIndexes{Indexes: indexes}
-	}
-
-	return hashedUsers, machineUsers
-}
-
-func appendRemotePeerConfig(dst []*proto.RemotePeerConfig, peers []*nbpeer.Peer, dnsName string, includeIPv6 bool) []*proto.RemotePeerConfig {
-	for _, rPeer := range peers {
-		allowedIPs := []string{rPeer.IP.String() + "/32"}
-		if includeIPv6 && rPeer.IPv6.IsValid() {
-			allowedIPs = append(allowedIPs, rPeer.IPv6.String()+"/128")
-		}
-		dst = append(dst, &proto.RemotePeerConfig{
-			WgPubKey:     rPeer.Key,
-			AllowedIps:   allowedIPs,
-			SshConfig:    &proto.SSHConfig{SshPubKey: []byte(rPeer.SSHKey)},
-			Fqdn:         rPeer.FQDN(dnsName),
-			AgentVersion: rPeer.Meta.WtVersion,
-		})
-	}
-	return dst
-}
-
-// toProtocolDNSConfig converts nbdns.Config to proto.DNSConfig using the cache
-func toProtocolDNSConfig(update nbdns.Config, cache *cache.DNSConfigCache, forwardPort int64) *proto.DNSConfig {
-	protoUpdate := &proto.DNSConfig{
-		ServiceEnable:    update.ServiceEnable,
-		CustomZones:      make([]*proto.CustomZone, 0, len(update.CustomZones)),
-		NameServerGroups: make([]*proto.NameServerGroup, 0, len(update.NameServerGroups)),
-		ForwarderPort:    forwardPort,
-	}
-
-	for _, zone := range update.CustomZones {
-		protoZone := convertToProtoCustomZone(zone)
-		protoUpdate.CustomZones = append(protoUpdate.CustomZones, protoZone)
-	}
-
-	for _, nsGroup := range update.NameServerGroups {
-		cacheKey := nsGroup.ID
-		if cachedGroup, exists := cache.GetNameServerGroup(cacheKey); exists {
-			protoUpdate.NameServerGroups = append(protoUpdate.NameServerGroups, cachedGroup)
-		} else {
-			protoGroup := convertToProtoNameServerGroup(nsGroup)
-			cache.SetNameServerGroup(cacheKey, protoGroup)
-			protoUpdate.NameServerGroups = append(protoUpdate.NameServerGroups, protoGroup)
-		}
-	}
-
-	return protoUpdate
-}
-
 func ToResponseProto(configProto nbconfig.Protocol) proto.HostConfig_Protocol {
 	switch configProto {
 	case nbconfig.UDP:
@@ -277,204 +200,6 @@ func ToResponseProto(configProto nbconfig.Protocol) proto.HostConfig_Protocol {
 	}
 }
 
-func toProtocolRoutes(routes []*nbroute.Route) []*proto.Route {
-	protoRoutes := make([]*proto.Route, 0, len(routes))
-	for _, r := range routes {
-		protoRoutes = append(protoRoutes, toProtocolRoute(r))
-	}
-	return protoRoutes
-}
-
-func toProtocolRoute(route *nbroute.Route) *proto.Route {
-	return &proto.Route{
-		ID:            string(route.ID),
-		NetID:         string(route.NetID),
-		Network:       route.Network.String(),
-		Domains:       route.Domains.ToPunycodeList(),
-		NetworkType:   int64(route.NetworkType),
-		Peer:          route.Peer,
-		Metric:        int64(route.Metric),
-		Masquerade:    route.Masquerade,
-		KeepRoute:     route.KeepRoute,
-		SkipAutoApply: route.SkipAutoApply,
-	}
-}
-
-// toProtocolFirewallRules converts the firewall rules to the protocol firewall rules.
-// When useSourcePrefixes is true, the compact SourcePrefixes field is populated
-// alongside the deprecated PeerIP for forward compatibility.
-// Wildcard rules ("0.0.0.0") are expanded into separate v4 and v6 SourcePrefixes
-// when includeIPv6 is true.
-func toProtocolFirewallRules(rules []*types.FirewallRule, includeIPv6, useSourcePrefixes bool) []*proto.FirewallRule {
-	result := make([]*proto.FirewallRule, 0, len(rules))
-	for i := range rules {
-		rule := rules[i]
-
-		fwRule := &proto.FirewallRule{
-			PolicyID:  []byte(rule.PolicyID),
-			PeerIP:    rule.PeerIP, //nolint:staticcheck // populated for backward compatibility
-			Direction: getProtoDirection(rule.Direction),
-			Action:    getProtoAction(rule.Action),
-			Protocol:  getProtoProtocol(rule.Protocol),
-			Port:      rule.Port,
-		}
-
-		if useSourcePrefixes && rule.PeerIP != "" {
-			result = append(result, populateSourcePrefixes(fwRule, rule, includeIPv6)...)
-		}
-
-		if shouldUsePortRange(fwRule) {
-			fwRule.PortInfo = rule.PortRange.ToProto()
-		}
-
-		result = append(result, fwRule)
-	}
-	return result
-}
-
-
-// populateSourcePrefixes sets SourcePrefixes on fwRule and returns any
-// additional rules needed (e.g. a v6 wildcard clone when the peer IP is unspecified).
-func populateSourcePrefixes(fwRule *proto.FirewallRule, rule *types.FirewallRule, includeIPv6 bool) []*proto.FirewallRule {
-	addr, err := netip.ParseAddr(rule.PeerIP)
-	if err != nil {
-		return nil
-	}
-
-	if !addr.IsUnspecified() {
-		fwRule.SourcePrefixes = [][]byte{netiputil.EncodeAddr(addr.Unmap())}
-		return nil
-	}
-
-	// IPv4Unspecified/0 is always valid, error is impossible.
-	v4Wildcard, _ := netiputil.EncodePrefix(netip.PrefixFrom(netip.IPv4Unspecified(), 0))
-	fwRule.SourcePrefixes = [][]byte{v4Wildcard}
-
-	if !includeIPv6 {
-		return nil
-	}
-
-	v6Rule := goproto.Clone(fwRule).(*proto.FirewallRule)
-	v6Rule.PeerIP = "::" //nolint:staticcheck // populated for backward compatibility
-	// IPv6Unspecified/0 is always valid, error is impossible.
-	v6Wildcard, _ := netiputil.EncodePrefix(netip.PrefixFrom(netip.IPv6Unspecified(), 0))
-	v6Rule.SourcePrefixes = [][]byte{v6Wildcard}
-	if shouldUsePortRange(v6Rule) {
-		v6Rule.PortInfo = rule.PortRange.ToProto()
-	}
-	return []*proto.FirewallRule{v6Rule}
-}
-
-// getProtoDirection converts the direction to proto.RuleDirection.
-func getProtoDirection(direction int) proto.RuleDirection {
-	if direction == types.FirewallRuleDirectionOUT {
-		return proto.RuleDirection_OUT
-	}
-	return proto.RuleDirection_IN
-}
-
-func toProtocolRoutesFirewallRules(rules []*types.RouteFirewallRule) []*proto.RouteFirewallRule {
-	result := make([]*proto.RouteFirewallRule, len(rules))
-	for i := range rules {
-		rule := rules[i]
-		result[i] = &proto.RouteFirewallRule{
-			SourceRanges: rule.SourceRanges,
-			Action:       getProtoAction(rule.Action),
-			Destination:  rule.Destination,
-			Protocol:     getProtoProtocol(rule.Protocol),
-			PortInfo:     getProtoPortInfo(rule),
-			IsDynamic:    rule.IsDynamic,
-			Domains:      rule.Domains.ToPunycodeList(),
-			PolicyID:     []byte(rule.PolicyID),
-			RouteID:      string(rule.RouteID),
-		}
-	}
-
-	return result
-}
-
-// getProtoAction converts the action to proto.RuleAction.
-func getProtoAction(action string) proto.RuleAction {
-	if action == string(types.PolicyTrafficActionDrop) {
-		return proto.RuleAction_DROP
-	}
-	return proto.RuleAction_ACCEPT
-}
-
-// getProtoProtocol converts the protocol to proto.RuleProtocol.
-func getProtoProtocol(protocol string) proto.RuleProtocol {
-	switch types.PolicyRuleProtocolType(protocol) {
-	case types.PolicyRuleProtocolALL:
-		return proto.RuleProtocol_ALL
-	case types.PolicyRuleProtocolTCP:
-		return proto.RuleProtocol_TCP
-	case types.PolicyRuleProtocolUDP:
-		return proto.RuleProtocol_UDP
-	case types.PolicyRuleProtocolICMP:
-		return proto.RuleProtocol_ICMP
-	default:
-		return proto.RuleProtocol_UNKNOWN
-	}
-}
-
-// getProtoPortInfo converts the port info to proto.PortInfo.
-func getProtoPortInfo(rule *types.RouteFirewallRule) *proto.PortInfo {
-	var portInfo proto.PortInfo
-	if rule.Port != 0 {
-		portInfo.PortSelection = &proto.PortInfo_Port{Port: uint32(rule.Port)}
-	} else if portRange := rule.PortRange; portRange.Start != 0 && portRange.End != 0 {
-		portInfo.PortSelection = &proto.PortInfo_Range_{
-			Range: &proto.PortInfo_Range{
-				Start: uint32(portRange.Start),
-				End:   uint32(portRange.End),
-			},
-		}
-	}
-	return &portInfo
-}
-
-func shouldUsePortRange(rule *proto.FirewallRule) bool {
-	return rule.Port == "" && (rule.Protocol == proto.RuleProtocol_UDP || rule.Protocol == proto.RuleProtocol_TCP)
-}
-
-// Helper function to convert nbdns.CustomZone to proto.CustomZone
-func convertToProtoCustomZone(zone nbdns.CustomZone) *proto.CustomZone {
-	protoZone := &proto.CustomZone{
-		Domain:               zone.Domain,
-		Records:              make([]*proto.SimpleRecord, 0, len(zone.Records)),
-		SearchDomainDisabled: zone.SearchDomainDisabled,
-		NonAuthoritative:     zone.NonAuthoritative,
-	}
-	for _, record := range zone.Records {
-		protoZone.Records = append(protoZone.Records, &proto.SimpleRecord{
-			Name:  record.Name,
-			Type:  int64(record.Type),
-			Class: record.Class,
-			TTL:   int64(record.TTL),
-			RData: record.RData,
-		})
-	}
-	return protoZone
-}
-
-// Helper function to convert nbdns.NameServerGroup to proto.NameServerGroup
-func convertToProtoNameServerGroup(nsGroup *nbdns.NameServerGroup) *proto.NameServerGroup {
-	protoGroup := &proto.NameServerGroup{
-		Primary:              nsGroup.Primary,
-		Domains:              nsGroup.Domains,
-		SearchDomainsEnabled: nsGroup.SearchDomainsEnabled,
-		NameServers:          make([]*proto.NameServer, 0, len(nsGroup.NameServers)),
-	}
-	for _, ns := range nsGroup.NameServers {
-		protoGroup.NameServers = append(protoGroup.NameServers, &proto.NameServer{
-			IP:     ns.IP.String(),
-			Port:   int64(ns.Port),
-			NSType: int64(ns.NSType),
-		})
-	}
-	return protoGroup
-}
-
 // buildJWTConfig constructs JWT configuration for SSH servers from management server config
 func buildJWTConfig(config *nbconfig.HttpServerConfig, deviceFlowConfig *nbconfig.DeviceAuthorizationFlow) *proto.JWTConfig {
 	if config == nil || config.AuthAudience == "" {

management/internals/shared/grpc/conversion_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/netbirdio/netbird/management/internals/controllers/network_map"
 	"github.com/netbirdio/netbird/management/internals/controllers/network_map/controller/cache"
 	nbconfig "github.com/netbirdio/netbird/management/internals/server/config"
+	"github.com/netbirdio/netbird/shared/management/networkmap"
 )
 
 func TestToProtocolDNSConfigWithCache(t *testing.T) {
@@ -61,13 +62,13 @@ func TestToProtocolDNSConfigWithCache(t *testing.T) {
 	}
 
 	// First run with config1
-	result1 := toProtocolDNSConfig(config1, &cache, int64(network_map.DnsForwarderPort))
+	result1 := networkmap.ToProtocolDNSConfig(config1, &cache, int64(network_map.DnsForwarderPort))
 
 	// Second run with config2
-	result2 := toProtocolDNSConfig(config2, &cache, int64(network_map.DnsForwarderPort))
+	result2 := networkmap.ToProtocolDNSConfig(config2, &cache, int64(network_map.DnsForwarderPort))
 
 	// Third run with config1 again
-	result3 := toProtocolDNSConfig(config1, &cache, int64(network_map.DnsForwarderPort))
+	result3 := networkmap.ToProtocolDNSConfig(config1, &cache, int64(network_map.DnsForwarderPort))
 
 	// Verify that result1 and result3 are identical
 	if !reflect.DeepEqual(result1, result3) {
@@ -99,7 +100,7 @@ func BenchmarkToProtocolDNSConfig(b *testing.B) {
 
 			b.ResetTimer()
 			for i := 0; i < b.N; i++ {
-				toProtocolDNSConfig(testData, cache, int64(network_map.DnsForwarderPort))
+				networkmap.ToProtocolDNSConfig(testData, cache, int64(network_map.DnsForwarderPort))
 			}
 		})
 
@@ -107,7 +108,7 @@ func BenchmarkToProtocolDNSConfig(b *testing.B) {
 			b.ResetTimer()
 			for i := 0; i < b.N; i++ {
 				cache := &cache.DNSConfigCache{}
-				toProtocolDNSConfig(testData, cache, int64(network_map.DnsForwarderPort))
+				networkmap.ToProtocolDNSConfig(testData, cache, int64(network_map.DnsForwarderPort))
 			}
 		})
 	}

management/internals/shared/grpc/server.go

@@ -932,7 +932,31 @@ func (s *Server) sendInitialSync(ctx context.Context, peerKey wgtypes.Key, peer
 		return status.Errorf(codes.Internal, "failed to get peer groups %s", err)
 	}
 
-	plainResp := ToSyncResponse(ctx, s.config, s.config.HttpConfig, s.config.DeviceAuthorizationFlow, peer, turnToken, relayToken, networkMap, s.networkMapController.GetDNSDomain(settings), postureChecks, nil, settings, settings.Extra, peerGroups, dnsFwdPort)
+	dnsName := s.networkMapController.GetDNSDomain(settings)
+
+	var plainResp *proto.SyncResponse
+	if s.networkMapController.PeerNeedsComponents(peer) {
+		// Capable peer: discard the legacy NetworkMap that SyncAndMarkPeer
+		// computed and recompute the raw components instead. This wastes one
+		// Calculate() call per initial-sync — the component-based wire
+		// format is what the peer actually consumes. The streaming path
+		// (network_map.Controller.UpdateAccountPeers) skips this duplication
+		// because it dispatches by capability before computing.
+		//
+		// TODO(step-4-sync): refactor SyncPeer / SyncAndMarkPeer / their
+		// mocks + manager interfaces to return PeerNetworkMapResult so the
+		// initial-sync path stops doing duplicate work. ~13 files of churn,
+		// deferred until the client-side decoder lands and there's a real
+		// deployment of capability=3 peers worth optimizing for.
+		_, components, proxyPatch, _, _, err := s.networkMapController.GetValidatedPeerWithComponents(ctx, false, peer.AccountID, peer)
+		if err != nil {
+			log.WithContext(ctx).Errorf("failed to build components for peer %s on initial sync: %v", peer.ID, err)
+			return status.Errorf(codes.Internal, "failed to build initial sync envelope")
+		}
+		plainResp = ToComponentSyncResponse(ctx, s.config, s.config.HttpConfig, s.config.DeviceAuthorizationFlow, peer, turnToken, relayToken, components, proxyPatch, dnsName, postureChecks, settings, settings.Extra, peerGroups, dnsFwdPort)
+	} else {
+		plainResp = ToSyncResponse(ctx, s.config, s.config.HttpConfig, s.config.DeviceAuthorizationFlow, peer, turnToken, relayToken, networkMap, dnsName, postureChecks, nil, settings, settings.Extra, peerGroups, dnsFwdPort)
+	}
 
 	key, err := s.secretsManager.GetWGKey()
 	if err != nil {

management/server/account.go

@@ -1621,6 +1621,14 @@ func (am *DefaultAccountManager) SyncUserJWTGroups(ctx context.Context, userAuth
 			return nil
 		}
 
+		for _, g := range newGroupsToCreate {
+			seq, err := transaction.AllocateAccountSeqID(ctx, userAuth.AccountId, types.AccountSeqEntityGroup)
+			if err != nil {
+				return fmt.Errorf("error allocating group seq id: %w", err)
+			}
+			g.AccountSeqID = seq
+		}
+
 		if err = transaction.CreateGroups(ctx, userAuth.AccountId, newGroupsToCreate); err != nil {
 			return fmt.Errorf("error saving groups: %w", err)
 		}

management/server/account_test.go

@@ -3036,6 +3036,16 @@ func TestAccount_SetJWTGroups(t *testing.T) {
 		user, err := manager.Store.GetUserByUserID(context.Background(), store.LockingStrengthNone, "user2")
 		assert.NoError(t, err, "unable to get user")
 		assert.Len(t, user.AutoGroups, 1, "new group should be added")
+
+		var newJWTGroup *types.Group
+		for _, g := range groups {
+			if g.Name == "group3" {
+				newJWTGroup = g
+				break
+			}
+		}
+		require.NotNil(t, newJWTGroup, "JIT-created JWT group not found")
+		assert.NotZero(t, newJWTGroup.AccountSeqID, "JIT-created JWT group must have a non-zero AccountSeqID")
 	})
 
 	t.Run("remove all JWT groups when list is empty", func(t *testing.T) {

management/server/group.go

@@ -96,6 +96,12 @@ func (am *DefaultAccountManager) CreateGroup(ctx context.Context, accountID, use
 			return err
 		}
 
+		seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityGroup)
+		if err != nil {
+			return status.Errorf(status.Internal, "failed to allocate group seq id: %v", err)
+		}
+		newGroup.AccountSeqID = seq
+
 		if err := transaction.CreateGroup(ctx, newGroup); err != nil {
 			return status.Errorf(status.Internal, "failed to create group: %v", err)
 		}
@@ -170,6 +176,8 @@ func (am *DefaultAccountManager) UpdateGroup(ctx context.Context, accountID, use
 			return err
 		}
 
+		newGroup.AccountSeqID = oldGroup.AccountSeqID
+
 		if err = transaction.UpdateGroup(ctx, newGroup); err != nil {
 			return err
 		}
@@ -221,6 +229,12 @@ func (am *DefaultAccountManager) CreateGroups(ctx context.Context, accountID, us
 
 			newGroup.AccountID = accountID
 
+			seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityGroup)
+			if err != nil {
+				return err
+			}
+			newGroup.AccountSeqID = seq
+
 			if err = transaction.CreateGroup(ctx, newGroup); err != nil {
 				return err
 			}
@@ -320,6 +334,12 @@ func (am *DefaultAccountManager) updateSingleGroup(ctx context.Context, accountI
 
 		newGroup.AccountID = accountID
 
+		oldGroup, err := transaction.GetGroupByID(ctx, store.LockingStrengthNone, accountID, newGroup.ID)
+		if err != nil {
+			return err
+		}
+		newGroup.AccountSeqID = oldGroup.AccountSeqID
+
 		if err := transaction.UpdateGroup(ctx, newGroup); err != nil {
 			return err
 		}

management/server/migration/account_seq.go

@@ -0,0 +1,156 @@
+package migration
+
+import (
+	"context"
+	"fmt"
+
+	log "github.com/sirupsen/logrus"
+	"gorm.io/gorm"
+
+	"github.com/netbirdio/netbird/management/server/types"
+)
+
+// BackfillAccountSeqIDs assigns a deterministic per-account sequential id to all
+// rows of `model` whose account_seq_id is zero, then seeds account_seq_counters
+// with the next free id per account. Idempotent: safe to re-run; both steps
+// no-op once everything is consistent.
+//
+// Implemented as two table-wide SQL statements with window functions, one
+// transaction. Backfilling 246k rows across 154k accounts on Postgres takes
+// well under a second instead of the per-account-loop ~2 minutes.
+//
+// orderColumn is the column to use when assigning the deterministic ordering
+// (typically the primary-key string id).
+func BackfillAccountSeqIDs[T any](
+	ctx context.Context,
+	db *gorm.DB,
+	entity types.AccountSeqEntity,
+	orderColumn string,
+) error {
+	var model T
+	if !db.Migrator().HasTable(&model) {
+		log.WithContext(ctx).Debugf("backfill seq id: table for %T missing, skip", model)
+		return nil
+	}
+
+	stmt := &gorm.Statement{DB: db}
+	if err := stmt.Parse(&model); err != nil {
+		return fmt.Errorf("parse model: %w", err)
+	}
+	table := quoteIdent(db, stmt.Schema.Table)
+	orderCol := quoteIdent(db, orderColumn)
+
+	return db.Transaction(func(tx *gorm.DB) error {
+		var pending int64
+		if err := tx.Raw(
+			fmt.Sprintf("SELECT count(*) FROM %s WHERE account_seq_id IS NULL OR account_seq_id = 0", table),
+		).Scan(&pending).Error; err != nil {
+			return fmt.Errorf("count pending on %s: %w", table, err)
+		}
+
+		if pending > 0 {
+			log.WithContext(ctx).Infof("backfill seq id: %s — %d rows pending", table, pending)
+			if err := backfillRankSQL(tx, table, orderCol); err != nil {
+				return fmt.Errorf("rank %s: %w", table, err)
+			}
+		}
+
+		if err := seedCountersSQL(tx, table, entity); err != nil {
+			return fmt.Errorf("seed counters for %s: %w", entity, err)
+		}
+		return nil
+	})
+}
+
+func quoteIdent(db *gorm.DB, name string) string {
+	switch db.Dialector.Name() {
+	case "mysql":
+		return "`" + name + "`"
+	case "postgres":
+		return `"` + name + `"`
+	default:
+		return name
+	}
+}
+
+func backfillRankSQL(db *gorm.DB, table, orderCol string) error {
+	dialect := db.Dialector.Name()
+	var sql string
+	switch dialect {
+	case "postgres", "sqlite":
+		sql = fmt.Sprintf(`
+WITH max_seq AS (
+    SELECT account_id, COALESCE(MAX(account_seq_id), 0) AS max_seq
+    FROM %s
+    GROUP BY account_id
+),
+ranked AS (
+    SELECT p.id,
+           m.max_seq + ROW_NUMBER() OVER (PARTITION BY p.account_id ORDER BY p.%s) AS new_seq
+    FROM %s p
+    JOIN max_seq m ON p.account_id = m.account_id
+    WHERE p.account_seq_id IS NULL OR p.account_seq_id = 0
+)
+UPDATE %s SET account_seq_id = ranked.new_seq
+FROM ranked
+WHERE %s.id = ranked.id
+`, table, orderCol, table, table, table)
+	case "mysql":
+		sql = fmt.Sprintf(`
+UPDATE %s p
+JOIN (
+    SELECT account_id, COALESCE(MAX(account_seq_id), 0) AS max_seq
+    FROM %s
+    GROUP BY account_id
+) m ON p.account_id = m.account_id
+JOIN (
+    SELECT id, ROW_NUMBER() OVER (PARTITION BY account_id ORDER BY %s) AS rn
+    FROM %s
+    WHERE account_seq_id IS NULL OR account_seq_id = 0
+) r ON p.id = r.id
+SET p.account_seq_id = m.max_seq + r.rn
+`, table, table, orderCol, table)
+	default:
+		return fmt.Errorf("unsupported dialect: %s", dialect)
+	}
+	return db.Exec(sql).Error
+}
+
+func seedCountersSQL(db *gorm.DB, table string, entity types.AccountSeqEntity) error {
+	dialect := db.Dialector.Name()
+	var sql string
+	switch dialect {
+	case "postgres":
+		sql = fmt.Sprintf(`
+INSERT INTO account_seq_counters (account_id, entity, next_id)
+SELECT account_id, ?, MAX(account_seq_id) + 1
+FROM %s
+WHERE account_seq_id IS NOT NULL AND account_seq_id > 0
+GROUP BY account_id
+ON CONFLICT (account_id, entity) DO UPDATE
+    SET next_id = GREATEST(account_seq_counters.next_id, EXCLUDED.next_id)
+`, table)
+	case "sqlite":
+		sql = fmt.Sprintf(`
+INSERT INTO account_seq_counters (account_id, entity, next_id)
+SELECT account_id, ?, MAX(account_seq_id) + 1
+FROM %s
+WHERE account_seq_id IS NOT NULL AND account_seq_id > 0
+GROUP BY account_id
+ON CONFLICT (account_id, entity) DO UPDATE
+    SET next_id = max(account_seq_counters.next_id, excluded.next_id)
+`, table)
+	case "mysql":
+		sql = fmt.Sprintf(`
+INSERT INTO account_seq_counters (account_id, entity, next_id)
+SELECT account_id, ?, MAX(account_seq_id) + 1
+FROM %s
+WHERE account_seq_id IS NOT NULL AND account_seq_id > 0
+GROUP BY account_id
+ON DUPLICATE KEY UPDATE next_id = GREATEST(next_id, VALUES(next_id))
+`, table)
+	default:
+		return fmt.Errorf("unsupported dialect: %s", dialect)
+	}
+	return db.Exec(sql, string(entity)).Error
+}

management/server/nameserver.go

@@ -69,6 +69,12 @@ func (am *DefaultAccountManager) CreateNameServerGroup(ctx context.Context, acco
 			return err
 		}
 
+		seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityNameserverGroup)
+		if err != nil {
+			return err
+		}
+		newNSGroup.AccountSeqID = seq
+
 		if err = transaction.SaveNameServerGroup(ctx, newNSGroup); err != nil {
 			return err
 		}
@@ -120,6 +126,8 @@ func (am *DefaultAccountManager) SaveNameServerGroup(ctx context.Context, accoun
 			return err
 		}
 
+		nsGroupToSave.AccountSeqID = oldNSGroup.AccountSeqID
+
 		if err = transaction.SaveNameServerGroup(ctx, nsGroupToSave); err != nil {
 			return err
 		}

management/server/networks/manager.go

@@ -71,9 +71,20 @@ func (m *managerImpl) CreateNetwork(ctx context.Context, userID string, network
 
 	network.ID = xid.New().String()
 
-	err = m.store.SaveNetwork(ctx, network)
+	err = m.store.ExecuteInTransaction(ctx, func(transaction store.Store) error {
+		seq, err := transaction.AllocateAccountSeqID(ctx, network.AccountID, serverTypes.AccountSeqEntityNetwork)
+		if err != nil {
+			return fmt.Errorf("failed to allocate network seq id: %w", err)
+		}
+		network.AccountSeqID = seq
+
+		if err := transaction.SaveNetwork(ctx, network); err != nil {
+			return fmt.Errorf("failed to save network: %w", err)
+		}
+		return nil
+	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to save network: %w", err)
+		return nil, err
 	}
 
 	m.accountManager.StoreEvent(ctx, userID, network.ID, network.AccountID, activity.NetworkCreated, network.EventMeta())
@@ -102,14 +113,25 @@ func (m *managerImpl) UpdateNetwork(ctx context.Context, userID string, network
 		return nil, status.NewPermissionDeniedError()
 	}
 
-	_, err = m.store.GetNetworkByID(ctx, store.LockingStrengthUpdate, network.AccountID, network.ID)
+	err = m.store.ExecuteInTransaction(ctx, func(transaction store.Store) error {
+		existing, err := transaction.GetNetworkByID(ctx, store.LockingStrengthUpdate, network.AccountID, network.ID)
+		if err != nil {
+			return fmt.Errorf("failed to get network: %w", err)
+		}
+		network.AccountSeqID = existing.AccountSeqID
+
+		if err := transaction.SaveNetwork(ctx, network); err != nil {
+			return fmt.Errorf("failed to save network: %w", err)
+		}
+		return nil
+	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to get network: %w", err)
+		return nil, err
 	}
 
 	m.accountManager.StoreEvent(ctx, userID, network.ID, network.AccountID, activity.NetworkUpdated, network.EventMeta())
 
-	return network, m.store.SaveNetwork(ctx, network)
+	return network, nil
 }
 
 func (m *managerImpl) DeleteNetwork(ctx context.Context, accountID, userID, networkID string) error {

management/server/networks/manager_test.go

@@ -252,3 +252,73 @@ func Test_UpdateNetworkFailsWithPermissionDenied(t *testing.T) {
 	require.Error(t, err)
 	require.Nil(t, updatedNetwork)
 }
+
+// Test_CreateNetworkAllocatesSeqID verifies that CreateNetwork sets a
+// non-zero AccountSeqID on the persisted network (allocated through the
+// account_seq_counters table).
+func Test_CreateNetworkAllocatesSeqID(t *testing.T) {
+	ctx := context.Background()
+	const accountID = "testAccountId"
+	const userID = "testAdminId"
+
+	s, cleanUp, err := store.NewTestStoreFromSQL(ctx, "../testdata/networks.sql", t.TempDir())
+	require.NoError(t, err)
+	t.Cleanup(cleanUp)
+
+	am := mock_server.MockAccountManager{}
+	permissionsManager := permissions.NewManager(s)
+	groupsManager := groups.NewManagerMock()
+	routerManager := routers.NewManagerMock()
+	resourcesManager := resources.NewManager(s, permissionsManager, groupsManager, &am, nil)
+	manager := NewManager(s, permissionsManager, resourcesManager, routerManager, &am)
+
+	created, err := manager.CreateNetwork(ctx, userID, &types.Network{
+		AccountID: accountID,
+		Name:      "seq-allocation-test",
+	})
+	require.NoError(t, err)
+	require.NotZero(t, created.AccountSeqID, "CreateNetwork must allocate a non-zero AccountSeqID")
+}
+
+// Test_UpdateNetworkPreservesSeqID verifies UpdateNetwork does not reset
+// AccountSeqID even when the caller passes a zero value (the shape REST
+// handlers produce because the field is `json:"-"`).
+func Test_UpdateNetworkPreservesSeqID(t *testing.T) {
+	ctx := context.Background()
+	const accountID = "testAccountId"
+	const userID = "testAdminId"
+
+	s, cleanUp, err := store.NewTestStoreFromSQL(ctx, "../testdata/networks.sql", t.TempDir())
+	require.NoError(t, err)
+	t.Cleanup(cleanUp)
+
+	am := mock_server.MockAccountManager{}
+	permissionsManager := permissions.NewManager(s)
+	groupsManager := groups.NewManagerMock()
+	routerManager := routers.NewManagerMock()
+	resourcesManager := resources.NewManager(s, permissionsManager, groupsManager, &am, nil)
+	manager := NewManager(s, permissionsManager, resourcesManager, routerManager, &am)
+
+	created, err := manager.CreateNetwork(ctx, userID, &types.Network{
+		AccountID: accountID,
+		Name:      "seq-preserve-original",
+	})
+	require.NoError(t, err)
+	originalSeq := created.AccountSeqID
+	require.NotZero(t, originalSeq)
+
+	update := &types.Network{
+		AccountID: accountID,
+		ID:        created.ID,
+		Name:      "seq-preserve-renamed",
+	}
+	require.Zero(t, update.AccountSeqID, "incoming struct must mirror an HTTP handler shape")
+
+	_, err = manager.UpdateNetwork(ctx, userID, update)
+	require.NoError(t, err)
+
+	got, err := manager.GetNetwork(ctx, accountID, userID, created.ID)
+	require.NoError(t, err)
+	require.Equal(t, originalSeq, got.AccountSeqID, "AccountSeqID must survive UpdateNetwork")
+	require.Equal(t, "seq-preserve-renamed", got.Name)
+}

management/server/networks/resources/manager.go

@@ -125,6 +125,12 @@ func (m *managerImpl) CreateResource(ctx context.Context, userID string, resourc
 			return fmt.Errorf("failed to get network: %w", err)
 		}
 
+		seq, err := transaction.AllocateAccountSeqID(ctx, resource.AccountID, nbtypes.AccountSeqEntityNetworkResource)
+		if err != nil {
+			return fmt.Errorf("failed to allocate network resource seq id: %w", err)
+		}
+		resource.AccountSeqID = seq
+
 		err = transaction.SaveNetworkResource(ctx, resource)
 		if err != nil {
 			return fmt.Errorf("failed to save network resource: %w", err)
@@ -231,6 +237,7 @@ func (m *managerImpl) UpdateResource(ctx context.Context, userID string, resourc
 		if err != nil {
 			return fmt.Errorf("failed to get network resource: %w", err)
 		}
+		resource.AccountSeqID = oldResource.AccountSeqID
 
 		err = transaction.SaveNetworkResource(ctx, resource)
 		if err != nil {

management/server/networks/resources/types/resource.go

@@ -32,6 +32,9 @@ type NetworkResource struct {
 	ID          string `gorm:"primaryKey"`
 	NetworkID   string `gorm:"index"`
 	AccountID   string `gorm:"index"`
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_network_resources_account_seq_id;not null;default:0"`
 	Name        string
 	Description string
 	Type        NetworkResourceType
@@ -93,17 +96,18 @@ func (n *NetworkResource) FromAPIRequest(req *api.NetworkResourceRequest) {
 
 func (n *NetworkResource) Copy() *NetworkResource {
 	return &NetworkResource{
-		ID:          n.ID,
-		AccountID:   n.AccountID,
-		NetworkID:   n.NetworkID,
-		Name:        n.Name,
-		Description: n.Description,
-		Type:        n.Type,
-		Address:     n.Address,
-		Domain:      n.Domain,
-		Prefix:      n.Prefix,
-		GroupIDs:    n.GroupIDs,
-		Enabled:     n.Enabled,
+		ID:           n.ID,
+		AccountID:    n.AccountID,
+		NetworkID:    n.NetworkID,
+		AccountSeqID: n.AccountSeqID,
+		Name:         n.Name,
+		Description:  n.Description,
+		Type:         n.Type,
+		Address:      n.Address,
+		Domain:       n.Domain,
+		Prefix:       n.Prefix,
+		GroupIDs:     n.GroupIDs,
+		Enabled:      n.Enabled,
 	}
 }
 

management/server/networks/routers/manager.go

@@ -102,6 +102,12 @@ func (m *managerImpl) CreateRouter(ctx context.Context, userID string, router *t
 
 		router.ID = xid.New().String()
 
+		seq, err := transaction.AllocateAccountSeqID(ctx, router.AccountID, serverTypes.AccountSeqEntityNetworkRouter)
+		if err != nil {
+			return fmt.Errorf("failed to allocate network router seq id: %w", err)
+		}
+		router.AccountSeqID = seq
+
 		err = transaction.SaveNetworkRouter(ctx, router)
 		if err != nil {
 			return fmt.Errorf("failed to create network router: %w", err)
@@ -166,6 +172,22 @@ func (m *managerImpl) UpdateRouter(ctx context.Context, userID string, router *t
 			return status.NewRouterNotPartOfNetworkError(router.ID, router.NetworkID)
 		}
 
+		oldRouter, err := transaction.GetNetworkRouterByID(ctx, store.LockingStrengthNone, router.AccountID, router.ID)
+		if err == nil {
+			router.AccountSeqID = oldRouter.AccountSeqID
+		} else if e, ok := status.FromError(err); ok && e.Type() == status.NotFound {
+			// PUT-as-upsert: caller may target a brand-new router id (used by
+			// the dashboard's "save" flow). Allocate a fresh account_seq_id so
+			// the upsert behaves the same as Create().
+			seq, allocErr := transaction.AllocateAccountSeqID(ctx, router.AccountID, serverTypes.AccountSeqEntityNetworkRouter)
+			if allocErr != nil {
+				return fmt.Errorf("failed to allocate network router seq id: %w", allocErr)
+			}
+			router.AccountSeqID = seq
+		} else {
+			return fmt.Errorf("failed to get existing network router: %w", err)
+		}
+
 		err = transaction.SaveNetworkRouter(ctx, router)
 		if err != nil {
 			return fmt.Errorf("failed to update network router: %w", err)

management/server/networks/routers/manager_test.go

@@ -195,6 +195,7 @@ func Test_UpdateRouterSuccessfully(t *testing.T) {
 	if err != nil {
 		require.NoError(t, err)
 	}
+	router.ID = "testRouterId"
 
 	s, cleanUp, err := store.NewTestStoreFromSQL(context.Background(), "../../testdata/networks.sql", t.TempDir())
 	if err != nil {

management/server/networks/routers/types/router.go

@@ -13,6 +13,9 @@ type NetworkRouter struct {
 	ID         string `gorm:"primaryKey"`
 	NetworkID  string `gorm:"index"`
 	AccountID  string `gorm:"index"`
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_network_routers_account_seq_id;not null;default:0"`
 	Peer       string
 	PeerGroups []string `gorm:"serializer:json"`
 	Masquerade bool
@@ -78,14 +81,15 @@ func (n *NetworkRouter) FromAPIRequest(req *api.NetworkRouterRequest) {
 
 func (n *NetworkRouter) Copy() *NetworkRouter {
 	return &NetworkRouter{
-		ID:         n.ID,
-		NetworkID:  n.NetworkID,
-		AccountID:  n.AccountID,
-		Peer:       n.Peer,
-		PeerGroups: n.PeerGroups,
-		Masquerade: n.Masquerade,
-		Metric:     n.Metric,
-		Enabled:    n.Enabled,
+		ID:           n.ID,
+		NetworkID:    n.NetworkID,
+		AccountID:    n.AccountID,
+		AccountSeqID: n.AccountSeqID,
+		Peer:         n.Peer,
+		PeerGroups:   n.PeerGroups,
+		Masquerade:   n.Masquerade,
+		Metric:       n.Metric,
+		Enabled:      n.Enabled,
 	}
 }
 

management/server/networks/types/network.go

@@ -7,12 +7,24 @@ import (
 )
 
 type Network struct {
-	ID          string `gorm:"primaryKey"`
-	AccountID   string `gorm:"index"`
+	ID        string `gorm:"primaryKey"`
+	AccountID string `gorm:"index"`
+
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_networks_account_seq_id;not null;default:0"`
+
 	Name        string
 	Description string
 }
 
+// HasSeqID reports whether the network has been persisted long enough to have
+// a per-account sequence id allocated. Wire encoders that key off AccountSeqID
+// must skip networks that return false here.
+func (n *Network) HasSeqID() bool {
+	return n != nil && n.AccountSeqID != 0
+}
+
 func NewNetwork(accountId, name, description string) *Network {
 	return &Network{
 		ID:          xid.New().String(),
@@ -41,13 +53,14 @@ func (n *Network) FromAPIRequest(req *api.NetworkRequest) {
 	}
 }
 
-// Copy returns a copy of a posture checks.
+// Copy returns a copy of a network.
 func (n *Network) Copy() *Network {
 	return &Network{
-		ID:          n.ID,
-		AccountID:   n.AccountID,
-		Name:        n.Name,
-		Description: n.Description,
+		ID:           n.ID,
+		AccountID:    n.AccountID,
+		AccountSeqID: n.AccountSeqID,
+		Name:         n.Name,
+		Description:  n.Description,
 	}
 }
 

management/server/peer/peer.go

@@ -13,8 +13,9 @@ import (
 
 // Peer capability constants mirror the proto enum values.
 const (
-	PeerCapabilitySourcePrefixes int32 = 1
-	PeerCapabilityIPv6Overlay    int32 = 2
+	PeerCapabilitySourcePrefixes      int32 = 1
+	PeerCapabilityIPv6Overlay         int32 = 2
+	PeerCapabilityComponentNetworkMap int32 = 3
 )
 
 // Peer represents a machine connected to the network.
@@ -247,6 +248,14 @@ func (p *Peer) SupportsSourcePrefixes() bool {
 	return p.HasCapability(PeerCapabilitySourcePrefixes)
 }
 
+// SupportsComponentNetworkMap reports whether the peer assembles its
+// NetworkMap from server-shipped components instead of consuming a fully
+// expanded NetworkMap. Determines whether the network_map controller skips
+// Calculate() server-side and emits the components envelope.
+func (p *Peer) SupportsComponentNetworkMap() bool {
+	return p.HasCapability(PeerCapabilityComponentNetworkMap)
+}
+
 func capabilitiesEqual(a, b []int32) bool {
 	if len(a) != len(b) {
 		return false

management/server/policy.go

@@ -69,6 +69,8 @@ func (am *DefaultAccountManager) SavePolicy(ctx context.Context, accountID, user
 				return err
 			}
 
+			policy.AccountSeqID = existingPolicy.AccountSeqID
+
 			if err = transaction.SavePolicy(ctx, policy); err != nil {
 				return err
 			}
@@ -78,6 +80,12 @@ func (am *DefaultAccountManager) SavePolicy(ctx context.Context, accountID, user
 				return err
 			}
 
+			seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityPolicy)
+			if err != nil {
+				return err
+			}
+			policy.AccountSeqID = seq
+
 			if err = transaction.CreatePolicy(ctx, policy); err != nil {
 				return err
 			}

management/server/posture/checks.go

@@ -47,10 +47,21 @@ type Checks struct {
 	// AccountID is a reference to the Account that this object belongs
 	AccountID string `json:"-" gorm:"index"`
 
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_posture_checks_account_seq_id;not null;default:0"`
+
 	// Checks is a set of objects that perform the actual checks
 	Checks ChecksDefinition `gorm:"serializer:json"`
 }
 
+// HasSeqID reports whether the posture check has been persisted long enough
+// to have a per-account sequence id allocated. Wire encoders that key off
+// AccountSeqID must skip checks that return false here.
+func (pc *Checks) HasSeqID() bool {
+	return pc != nil && pc.AccountSeqID != 0
+}
+
 // ChecksDefinition contains definition of actual check
 type ChecksDefinition struct {
 	NBVersionCheck        *NBVersionCheck        `json:",omitempty"`
@@ -121,11 +132,12 @@ func (*Checks) TableName() string {
 // Copy returns a copy of a posture checks.
 func (pc *Checks) Copy() *Checks {
 	checks := &Checks{
-		ID:          pc.ID,
-		Name:        pc.Name,
-		Description: pc.Description,
-		AccountID:   pc.AccountID,
-		Checks:      pc.Checks.Copy(),
+		ID:           pc.ID,
+		Name:         pc.Name,
+		Description:  pc.Description,
+		AccountID:    pc.AccountID,
+		AccountSeqID: pc.AccountSeqID,
+		Checks:       pc.Checks.Copy(),
 	}
 	return checks
 }

management/server/posture_checks.go

@@ -51,12 +51,24 @@ func (am *DefaultAccountManager) SavePostureChecks(ctx context.Context, accountI
 		}
 
 		if isUpdate {
+			existing, err := transaction.GetPostureChecksByID(ctx, store.LockingStrengthNone, accountID, postureChecks.ID)
+			if err != nil {
+				return err
+			}
+			postureChecks.AccountSeqID = existing.AccountSeqID
+
 			updateAccountPeers, err = arePostureCheckChangesAffectPeers(ctx, transaction, accountID, postureChecks.ID)
 			if err != nil {
 				return err
 			}
 
 			action = activity.PostureCheckUpdated
+		} else {
+			seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityPostureCheck)
+			if err != nil {
+				return err
+			}
+			postureChecks.AccountSeqID = seq
 		}
 
 		postureChecks.AccountID = accountID

management/server/posture_checks_test.go

@@ -563,3 +563,61 @@ func TestArePostureCheckChangesAffectPeers(t *testing.T) {
 		assert.False(t, result)
 	})
 }
+
+// TestSavePostureChecks_AllocatesSeqIDOnCreate verifies that the create path
+// (no incoming ID) allocates a non-zero AccountSeqID via the
+// account_seq_counters table.
+func TestSavePostureChecks_AllocatesSeqIDOnCreate(t *testing.T) {
+	am, _, err := createManager(t)
+	require.NoError(t, err)
+
+	account, err := initTestPostureChecksAccount(am)
+	require.NoError(t, err)
+
+	created, err := am.SavePostureChecks(context.Background(), account.Id, adminUserID, &posture.Checks{
+		Name: "seq-allocation-test",
+		Checks: posture.ChecksDefinition{
+			NBVersionCheck: &posture.NBVersionCheck{MinVersion: "0.26.0"},
+		},
+	}, true)
+	require.NoError(t, err)
+	require.NotZero(t, created.AccountSeqID, "SavePostureChecks on create must allocate a non-zero AccountSeqID")
+}
+
+// TestSavePostureChecks_PreservesSeqIDOnUpdate verifies the update path does
+// not reset AccountSeqID even when the caller passes a zero value (REST
+// handler shape, because the field is `json:"-"`).
+func TestSavePostureChecks_PreservesSeqIDOnUpdate(t *testing.T) {
+	am, _, err := createManager(t)
+	require.NoError(t, err)
+
+	account, err := initTestPostureChecksAccount(am)
+	require.NoError(t, err)
+
+	created, err := am.SavePostureChecks(context.Background(), account.Id, adminUserID, &posture.Checks{
+		Name: "seq-preserve-original",
+		Checks: posture.ChecksDefinition{
+			NBVersionCheck: &posture.NBVersionCheck{MinVersion: "0.26.0"},
+		},
+	}, true)
+	require.NoError(t, err)
+	originalSeq := created.AccountSeqID
+	require.NotZero(t, originalSeq)
+
+	update := &posture.Checks{
+		ID:   created.ID,
+		Name: "seq-preserve-renamed",
+		Checks: posture.ChecksDefinition{
+			NBVersionCheck: &posture.NBVersionCheck{MinVersion: "0.27.0"},
+		},
+	}
+	require.Zero(t, update.AccountSeqID, "incoming struct must mirror an HTTP handler shape")
+
+	_, err = am.SavePostureChecks(context.Background(), account.Id, adminUserID, update, false)
+	require.NoError(t, err)
+
+	got, err := am.GetPostureChecks(context.Background(), account.Id, created.ID, adminUserID)
+	require.NoError(t, err)
+	require.Equal(t, originalSeq, got.AccountSeqID, "AccountSeqID must survive SavePostureChecks update")
+	require.Equal(t, "seq-preserve-renamed", got.Name)
+}

management/server/route.go

@@ -178,6 +178,12 @@ func (am *DefaultAccountManager) CreateRoute(ctx context.Context, accountID stri
 			return err
 		}
 
+		seq, err := transaction.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityRoute)
+		if err != nil {
+			return err
+		}
+		newRoute.AccountSeqID = seq
+
 		if err = transaction.SaveRoute(ctx, newRoute); err != nil {
 			return err
 		}
@@ -231,6 +237,7 @@ func (am *DefaultAccountManager) SaveRoute(ctx context.Context, accountID, userI
 			return err
 		}
 		routeToSave.AccountID = accountID
+		routeToSave.AccountSeqID = oldRoute.AccountSeqID
 
 		if err = transaction.SaveRoute(ctx, routeToSave); err != nil {
 			return err

management/server/store/account_seq_test.go

@@ -0,0 +1,506 @@
+package store
+
+import (
+	"context"
+	"errors"
+	"net/netip"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	resourceTypes "github.com/netbirdio/netbird/management/server/networks/resources/types"
+	routerTypes "github.com/netbirdio/netbird/management/server/networks/routers/types"
+	networkTypes "github.com/netbirdio/netbird/management/server/networks/types"
+	"github.com/netbirdio/netbird/management/server/posture"
+	"github.com/netbirdio/netbird/management/server/types"
+	"github.com/netbirdio/netbird/route"
+)
+
+var errRollback = errors.New("intentional rollback")
+
+func TestAllocateAccountSeqID_SequentialPerAccount(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accA = "acc-a"
+	const accB = "acc-b"
+
+	require.NoError(t, store.ExecuteInTransaction(ctx, func(tx Store) error {
+		got, err := tx.AllocateAccountSeqID(ctx, accA, types.AccountSeqEntityPolicy)
+		require.NoError(t, err)
+		require.Equal(t, uint32(1), got)
+
+		got, err = tx.AllocateAccountSeqID(ctx, accA, types.AccountSeqEntityPolicy)
+		require.NoError(t, err)
+		require.Equal(t, uint32(2), got)
+
+		got, err = tx.AllocateAccountSeqID(ctx, accB, types.AccountSeqEntityPolicy)
+		require.NoError(t, err)
+		require.Equal(t, uint32(1), got, "different account starts from 1")
+
+		got, err = tx.AllocateAccountSeqID(ctx, accA, types.AccountSeqEntityGroup)
+		require.NoError(t, err)
+		require.Equal(t, uint32(1), got, "different entity starts from 1")
+
+		return nil
+	}))
+
+	require.NoError(t, store.ExecuteInTransaction(ctx, func(tx Store) error {
+		got, err := tx.AllocateAccountSeqID(ctx, accA, types.AccountSeqEntityPolicy)
+		require.NoError(t, err)
+		require.Equal(t, uint32(3), got, "counter persists across transactions")
+		return nil
+	}))
+}
+
+func TestPolicyBackfill_AssignsSeqIDsToExistingPolicies(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+
+	policies, err := store.GetAccountPolicies(ctx, LockingStrengthNone, accountID)
+	require.NoError(t, err)
+	require.NotEmpty(t, policies, "test fixture must have policies")
+
+	seen := make(map[uint32]bool)
+	for _, p := range policies {
+		require.NotZero(t, p.AccountSeqID, "policy %s must have a non-zero AccountSeqID after migration", p.ID)
+		require.False(t, seen[p.AccountSeqID], "duplicate AccountSeqID %d in account %s", p.AccountSeqID, accountID)
+		seen[p.AccountSeqID] = true
+	}
+}
+
+func TestPolicyUpdate_PreservesSeqID(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+	const policyID = "cs1tnh0hhcjnqoiuebf0"
+
+	original, err := store.GetPolicyByID(ctx, LockingStrengthNone, accountID, policyID)
+	require.NoError(t, err)
+	originalSeq := original.AccountSeqID
+	require.NotZero(t, originalSeq, "fixture must have non-zero AccountSeqID after backfill")
+
+	updated := &types.Policy{
+		ID:        policyID,
+		AccountID: accountID,
+		Name:      "renamed",
+		Enabled:   false,
+		Rules:     original.Rules,
+	}
+	require.Zero(t, updated.AccountSeqID, "incoming struct should have zero AccountSeqID like an HTTP handler would")
+
+	require.NoError(t, store.SavePolicy(ctx, updated))
+
+	got, err := store.GetPolicyByID(ctx, LockingStrengthNone, accountID, policyID)
+	require.NoError(t, err)
+	require.Equal(t, originalSeq, got.AccountSeqID, "AccountSeqID must not be reset by update path")
+	require.Equal(t, "renamed", got.Name)
+}
+
+func TestGroupUpdate_PreservesSeqID(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+
+	groups, err := store.GetAccountGroups(ctx, LockingStrengthNone, accountID)
+	require.NoError(t, err)
+	require.NotEmpty(t, groups)
+
+	original := groups[0]
+	originalSeq := original.AccountSeqID
+	require.NotZero(t, originalSeq)
+
+	updated := &types.Group{
+		ID:        original.ID,
+		AccountID: accountID,
+		Name:      "renamed",
+		Issued:    original.Issued,
+	}
+	require.Zero(t, updated.AccountSeqID)
+
+	require.NoError(t, store.UpdateGroup(ctx, updated))
+
+	got, err := store.GetGroupByID(ctx, LockingStrengthNone, accountID, original.ID)
+	require.NoError(t, err)
+	require.Equal(t, originalSeq, got.AccountSeqID, "AccountSeqID must not be reset by UpdateGroup")
+	require.Equal(t, "renamed", got.Name)
+}
+
+func TestSaveAccount_AllocatesSeqIDsForDefaultGroupAndPolicy(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "save-account-seqid-test"
+
+	account := &types.Account{
+		Id:          accountID,
+		CreatedBy:   "user1",
+		Domain:      "example.test",
+		DNSSettings: types.DNSSettings{},
+		Settings:    &types.Settings{},
+		Network: &types.Network{
+			Identifier: "net-test",
+		},
+		Users: map[string]*types.User{
+			"user1": {Id: "user1", AccountID: accountID, Role: types.UserRoleOwner},
+		},
+	}
+	require.NoError(t, account.AddAllGroup(false), "AddAllGroup should populate default Group + Policy")
+	require.Len(t, account.Groups, 1, "default 'All' group must be present")
+	require.Len(t, account.Policies, 1, "default policy must be present")
+
+	for _, g := range account.Groups {
+		require.Zero(t, g.AccountSeqID, "default group must start with seq=0")
+	}
+	require.Zero(t, account.Policies[0].AccountSeqID, "default policy must start with seq=0")
+
+	require.NoError(t, store.SaveAccount(ctx, account))
+
+	groups, err := store.GetAccountGroups(ctx, LockingStrengthNone, accountID)
+	require.NoError(t, err)
+	require.Len(t, groups, 1)
+	require.NotZerof(t, groups[0].AccountSeqID, "default group must have seq>0 after SaveAccount")
+
+	policies, err := store.GetAccountPolicies(ctx, LockingStrengthNone, accountID)
+	require.NoError(t, err)
+	require.Len(t, policies, 1)
+	require.NotZerof(t, policies[0].AccountSeqID, "default policy must have seq>0 after SaveAccount")
+
+	require.ErrorIs(t, store.ExecuteInTransaction(ctx, func(tx Store) error {
+		next, err := tx.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityGroup)
+		require.NoError(t, err)
+		require.Equal(t, groups[0].AccountSeqID+1, next, "next group seq must be max+1")
+
+		next, err = tx.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityPolicy)
+		require.NoError(t, err)
+		require.Equal(t, policies[0].AccountSeqID+1, next, "next policy seq must be max+1")
+		return errRollback
+	}), errRollback)
+}
+
+func TestSaveAccount_PreservesExistingSeqIDs(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+
+	account, err := store.GetAccount(ctx, accountID)
+	require.NoError(t, err)
+
+	groupSeqs := make(map[string]uint32)
+	policySeqs := make(map[string]uint32)
+	routeSeqs := make(map[route.ID]uint32)
+	nsgSeqs := make(map[string]uint32)
+	resourceSeqs := make(map[string]uint32)
+	routerSeqs := make(map[string]uint32)
+	networkSeqs := make(map[string]uint32)
+
+	for _, g := range account.Groups {
+		require.NotZero(t, g.AccountSeqID, "fixture group must have seq>0 after backfill")
+		groupSeqs[g.ID] = g.AccountSeqID
+	}
+	for _, p := range account.Policies {
+		require.NotZero(t, p.AccountSeqID, "fixture policy must have seq>0")
+		policySeqs[p.ID] = p.AccountSeqID
+	}
+	for _, r := range account.Routes {
+		require.NotZero(t, r.AccountSeqID, "fixture route must have seq>0")
+		routeSeqs[r.ID] = r.AccountSeqID
+	}
+	for _, n := range account.NameServerGroups {
+		require.NotZero(t, n.AccountSeqID, "fixture name_server_group must have seq>0")
+		nsgSeqs[n.ID] = n.AccountSeqID
+	}
+	for _, nr := range account.NetworkResources {
+		require.NotZero(t, nr.AccountSeqID, "fixture network_resource must have seq>0")
+		resourceSeqs[nr.ID] = nr.AccountSeqID
+	}
+	for _, nr := range account.NetworkRouters {
+		require.NotZero(t, nr.AccountSeqID, "fixture network_router must have seq>0")
+		routerSeqs[nr.ID] = nr.AccountSeqID
+	}
+	for _, n := range account.Networks {
+		require.NotZero(t, n.AccountSeqID, "fixture network must have seq>0 after backfill")
+		networkSeqs[n.ID] = n.AccountSeqID
+	}
+
+	require.NoError(t, store.SaveAccount(ctx, account))
+
+	after, err := store.GetAccount(ctx, accountID)
+	require.NoError(t, err)
+	for _, g := range after.Groups {
+		require.Equal(t, groupSeqs[g.ID], g.AccountSeqID, "group %s seq must be preserved on re-save", g.ID)
+	}
+	for _, p := range after.Policies {
+		require.Equal(t, policySeqs[p.ID], p.AccountSeqID, "policy %s seq must be preserved", p.ID)
+	}
+	for _, r := range after.Routes {
+		require.Equal(t, routeSeqs[r.ID], r.AccountSeqID, "route %s seq must be preserved (slice-of-value addressability)", r.ID)
+	}
+	for _, n := range after.NameServerGroups {
+		require.Equal(t, nsgSeqs[n.ID], n.AccountSeqID, "name_server_group %s seq must be preserved (slice-of-value addressability)", n.ID)
+	}
+	for _, nr := range after.NetworkResources {
+		require.Equal(t, resourceSeqs[nr.ID], nr.AccountSeqID, "network_resource %s seq must be preserved", nr.ID)
+	}
+	for _, nr := range after.NetworkRouters {
+		require.Equal(t, routerSeqs[nr.ID], nr.AccountSeqID, "network_router %s seq must be preserved", nr.ID)
+	}
+	for _, n := range after.Networks {
+		require.Equal(t, networkSeqs[n.ID], n.AccountSeqID, "network %s seq must be preserved", n.ID)
+	}
+}
+
+func TestSaveAccount_AllocatesSeqIDsForAllEntityTypes(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "save-account-all-entities"
+
+	addr, err := netip.ParseAddr("8.8.8.8")
+	require.NoError(t, err)
+
+	account := &types.Account{
+		Id:        accountID,
+		CreatedBy: "user1",
+		Domain:    "example.test",
+		Settings:  &types.Settings{},
+		Network:   &types.Network{Identifier: "net-test"},
+		Users: map[string]*types.User{
+			"user1": {Id: "user1", AccountID: accountID, Role: types.UserRoleOwner},
+		},
+		Groups: map[string]*types.Group{
+			"g1": {ID: "g1", AccountID: accountID, Name: "g1", Issued: types.GroupIssuedAPI},
+		},
+		Policies: []*types.Policy{
+			{ID: "p1", AccountID: accountID, Name: "p1", Enabled: true,
+				Rules: []*types.PolicyRule{{ID: "r1", PolicyID: "p1", Enabled: true}}},
+		},
+		Routes: map[route.ID]*route.Route{
+			"rt1": {ID: "rt1", AccountID: accountID, NetID: "net1", Peer: "peer1"},
+		},
+		NameServerGroups: map[string]*nbdns.NameServerGroup{
+			"nsg1": {ID: "nsg1", AccountID: accountID, Name: "nsg1", Enabled: true,
+				NameServers: []nbdns.NameServer{{IP: addr, NSType: nbdns.UDPNameServerType, Port: 53}}},
+		},
+		NetworkResources: []*resourceTypes.NetworkResource{
+			{ID: "nr1", AccountID: accountID, NetworkID: "net1", Name: "res1", Enabled: true},
+		},
+		NetworkRouters: []*routerTypes.NetworkRouter{
+			{ID: "nrt1", AccountID: accountID, NetworkID: "net1", Peer: "peer1", Enabled: true},
+		},
+		Networks: []*networkTypes.Network{
+			{ID: "n1", AccountID: accountID, Name: "n1"},
+		},
+		PostureChecks: []*posture.Checks{
+			{ID: "pc1", AccountID: accountID, Name: "pc1",
+				Checks: posture.ChecksDefinition{
+					NBVersionCheck: &posture.NBVersionCheck{MinVersion: "0.26.0"},
+				}},
+		},
+	}
+
+	require.NoError(t, store.SaveAccount(ctx, account))
+
+	after, err := store.GetAccount(ctx, accountID)
+	require.NoError(t, err)
+
+	require.Len(t, after.Groups, 1)
+	require.Len(t, after.Policies, 1)
+	require.Len(t, after.Routes, 1)
+	require.Len(t, after.NameServerGroups, 1)
+	require.Len(t, after.NetworkResources, 1)
+	require.Len(t, after.NetworkRouters, 1)
+	require.Len(t, after.Networks, 1)
+	require.Len(t, after.PostureChecks, 1)
+
+	for _, g := range after.Groups {
+		require.NotZero(t, g.AccountSeqID, "group seq must be allocated")
+	}
+	for _, p := range after.Policies {
+		require.NotZero(t, p.AccountSeqID, "policy seq must be allocated")
+	}
+	for _, r := range after.Routes {
+		require.NotZero(t, r.AccountSeqID, "route seq must be allocated (slice-of-value addressability)")
+	}
+	for _, n := range after.NameServerGroups {
+		require.NotZero(t, n.AccountSeqID, "name_server_group seq must be allocated (slice-of-value addressability)")
+	}
+	for _, nr := range after.NetworkResources {
+		require.NotZero(t, nr.AccountSeqID, "network_resource seq must be allocated")
+	}
+	for _, nr := range after.NetworkRouters {
+		require.NotZero(t, nr.AccountSeqID, "network_router seq must be allocated")
+	}
+	for _, n := range after.Networks {
+		require.NotZero(t, n.AccountSeqID, "network seq must be allocated")
+	}
+	for _, pc := range after.PostureChecks {
+		require.NotZero(t, pc.AccountSeqID, "posture_check seq must be allocated")
+	}
+
+	require.NoError(t, store.SaveAccount(ctx, after))
+	final, err := store.GetAccount(ctx, accountID)
+	require.NoError(t, err)
+	for _, r := range final.Routes {
+		require.Equal(t, after.Routes[r.ID].AccountSeqID, r.AccountSeqID, "route seq preserved on re-save")
+	}
+	for _, n := range final.NameServerGroups {
+		require.Equal(t, after.NameServerGroups[n.ID].AccountSeqID, n.AccountSeqID, "name_server_group seq preserved on re-save")
+	}
+	afterByID := map[string]uint32{}
+	for _, n := range after.Networks {
+		afterByID[n.ID] = n.AccountSeqID
+	}
+	for _, n := range final.Networks {
+		require.Equal(t, afterByID[n.ID], n.AccountSeqID, "network seq preserved on re-save")
+	}
+	afterPCByID := map[string]uint32{}
+	for _, pc := range after.PostureChecks {
+		afterPCByID[pc.ID] = pc.AccountSeqID
+	}
+	for _, pc := range final.PostureChecks {
+		require.Equal(t, afterPCByID[pc.ID], pc.AccountSeqID, "posture_check seq preserved on re-save")
+	}
+}
+
+func TestAllocateAccountSeqID_ConcurrentSameAccountEntity(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "concurrent-test"
+	const entity = types.AccountSeqEntityPolicy
+	const goroutines = 32
+
+	type result struct {
+		seq uint32
+		err error
+	}
+	results := make(chan result, goroutines)
+	start := make(chan struct{})
+
+	for i := 0; i < goroutines; i++ {
+		go func() {
+			<-start
+			var allocated uint32
+			err := store.ExecuteInTransaction(ctx, func(tx Store) error {
+				seq, err := tx.AllocateAccountSeqID(ctx, accountID, entity)
+				allocated = seq
+				return err
+			})
+			results <- result{seq: allocated, err: err}
+		}()
+	}
+	close(start)
+
+	seen := make(map[uint32]int, goroutines)
+	for i := 0; i < goroutines; i++ {
+		r := <-results
+		require.NoError(t, r.err, "concurrent allocate must not fail")
+		require.NotZero(t, r.seq, "allocated seq must be non-zero")
+		seen[r.seq]++
+	}
+
+	require.Lenf(t, seen, goroutines, "every concurrent allocation must yield a unique id; got duplicates in %v", seen)
+	for i := uint32(1); i <= goroutines; i++ {
+		require.Equalf(t, 1, seen[i], "id %d must appear exactly once across concurrent allocations", i)
+	}
+}
+
+func TestStoreCreateGroups_AllocatedSeqIDIsNotClobbered(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+
+	groups := []*types.Group{
+		{ID: "seq-test-g1", AccountID: accountID, Name: "g1", Issued: "jwt", AccountSeqID: 7777},
+		{ID: "seq-test-g2", AccountID: accountID, Name: "g2", Issued: "jwt", AccountSeqID: 7778},
+	}
+	require.NoError(t, store.CreateGroups(ctx, accountID, groups))
+
+	for _, want := range groups {
+		got, err := store.GetGroupByID(ctx, LockingStrengthNone, accountID, want.ID)
+		require.NoError(t, err)
+		require.Equal(t, want.AccountSeqID, got.AccountSeqID, "seq id from caller must be persisted on insert")
+	}
+
+	groups[0].Name = "g1-renamed"
+	groups[0].AccountSeqID = 0
+	require.NoError(t, store.CreateGroups(ctx, accountID, groups[:1]))
+
+	got, err := store.GetGroupByID(ctx, LockingStrengthNone, accountID, "seq-test-g1")
+	require.NoError(t, err)
+	require.Equal(t, "g1-renamed", got.Name, "upsert path still updates other columns")
+	require.Equal(t, uint32(7777), got.AccountSeqID, "upsert path must NOT overwrite account_seq_id")
+}
+
+func TestPolicyCreate_AllocatesSeqID(t *testing.T) {
+	store, cleanup, err := NewTestStoreFromSQL(context.Background(), "../testdata/store.sql", t.TempDir())
+	t.Cleanup(cleanup)
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	const accountID = "bf1c8084-ba50-4ce7-9439-34653001fc3b"
+
+	existing, err := store.GetAccountPolicies(ctx, LockingStrengthNone, accountID)
+	require.NoError(t, err)
+	maxSeq := uint32(0)
+	for _, p := range existing {
+		if p.AccountSeqID > maxSeq {
+			maxSeq = p.AccountSeqID
+		}
+	}
+
+	require.NoError(t, store.ExecuteInTransaction(ctx, func(tx Store) error {
+		seq, err := tx.AllocateAccountSeqID(ctx, accountID, types.AccountSeqEntityPolicy)
+		if err != nil {
+			return err
+		}
+		require.Equal(t, maxSeq+1, seq, "next id should be max+1 after backfill")
+
+		newPolicy := &types.Policy{
+			ID:           "bench-new-policy",
+			AccountID:    accountID,
+			AccountSeqID: seq,
+			Enabled:      true,
+			Rules: []*types.PolicyRule{{
+				ID:            "bench-new-policy-rule",
+				PolicyID:      "bench-new-policy",
+				Enabled:       true,
+				Action:        types.PolicyTrafficActionAccept,
+				Sources:       []string{"groupA"},
+				Destinations:  []string{"groupC"},
+				Bidirectional: true,
+			}},
+		}
+		return tx.CreatePolicy(ctx, newPolicy)
+	}))
+
+	created, err := store.GetPolicyByID(ctx, LockingStrengthNone, accountID, "bench-new-policy")
+	require.NoError(t, err)
+	require.Equal(t, maxSeq+1, created.AccountSeqID)
+}

management/server/store/sql_store.go

@@ -137,6 +137,7 @@ func NewSqlStore(ctx context.Context, db *gorm.DB, storeEngine types.Engine, met
 		&networkTypes.Network{}, &routerTypes.NetworkRouter{}, &resourceTypes.NetworkResource{}, &types.AccountOnboarding{},
 		&types.Job{}, &zones.Zone{}, &records.Record{}, &types.UserInviteRecord{}, &rpservice.Service{}, &rpservice.Target{}, &domain.Domain{},
 		&accesslogs.AccessLogEntry{}, &proxy.Proxy{},
+		&types.AccountSeqCounter{},
 	)
 	if err != nil {
 		return nil, fmt.Errorf("auto migratePreAuto: %w", err)
@@ -307,6 +308,10 @@ func (s *SqlStore) SaveAccount(ctx context.Context, account *types.Account) erro
 			return result.Error
 		}
 
+		if err := s.assignAccountSeqIDs(ctx, tx, account); err != nil {
+			return fmt.Errorf("assign seq ids: %w", err)
+		}
+
 		result = tx.
 			Session(&gorm.Session{FullSaveAssociations: true}).
 			Clauses(clause.OnConflict{UpdateAll: true}).
@@ -658,6 +663,22 @@ func (s *SqlStore) SaveUser(ctx context.Context, user *types.User) error {
 }
 
 // CreateGroups creates the given list of groups to the database.
+// groupUpsertColumns is the explicit allowlist of columns that get updated when
+// CreateGroups / UpdateGroups hit a PK conflict. account_seq_id is intentionally
+// omitted so a caller passing an entity with the zero value (e.g. an HTTP
+// handler-built struct) cannot reset the persisted seq id during an upsert.
+// Keep this in sync with the Group schema in management/server/types/group.go.
+func groupUpsertColumns() clause.Set {
+	return clause.AssignmentColumns([]string{
+		"account_id",
+		"name",
+		"issued",
+		"integration_ref_id",
+		"integration_ref_integration_type",
+		"resources",
+	})
+}
+
 func (s *SqlStore) CreateGroups(ctx context.Context, accountID string, groups []*types.Group) error {
 	if len(groups) == 0 {
 		return nil
@@ -667,8 +688,9 @@ func (s *SqlStore) CreateGroups(ctx context.Context, accountID string, groups []
 		result := tx.
 			Clauses(
 				clause.OnConflict{
+					Columns:   []clause.Column{{Name: "id"}},
 					Where:     clause.Where{Exprs: []clause.Expression{clause.Eq{Column: "groups.account_id", Value: accountID}}},
-					UpdateAll: true,
+					DoUpdates: groupUpsertColumns(),
 				},
 			).
 			Omit(clause.Associations).
@@ -692,8 +714,9 @@ func (s *SqlStore) UpdateGroups(ctx context.Context, accountID string, groups []
 		result := tx.
 			Clauses(
 				clause.OnConflict{
+					Columns:   []clause.Column{{Name: "id"}},
 					Where:     clause.Where{Exprs: []clause.Expression{clause.Eq{Column: "groups.account_id", Value: accountID}}},
-					UpdateAll: true,
+					DoUpdates: groupUpsertColumns(),
 				},
 			).
 			Omit(clause.Associations).
@@ -1995,7 +2018,7 @@ func (s *SqlStore) getUsers(ctx context.Context, accountID string) ([]types.User
 }
 
 func (s *SqlStore) getGroups(ctx context.Context, accountID string) ([]*types.Group, error) {
-	const query = `SELECT id, account_id, name, issued, resources, integration_ref_id, integration_ref_integration_type FROM groups WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, name, issued, resources, integration_ref_id, integration_ref_integration_type FROM groups WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2005,7 +2028,7 @@ func (s *SqlStore) getGroups(ctx context.Context, accountID string) ([]*types.Gr
 		var resources []byte
 		var refID sql.NullInt64
 		var refType sql.NullString
-		err := row.Scan(&g.ID, &g.AccountID, &g.Name, &g.Issued, &resources, &refID, &refType)
+		err := row.Scan(&g.ID, &g.AccountID, &g.AccountSeqID, &g.Name, &g.Issued, &resources, &refID, &refType)
 		if err == nil {
 			if refID.Valid {
 				g.IntegrationReference.ID = int(refID.Int64)
@@ -2030,7 +2053,7 @@ func (s *SqlStore) getGroups(ctx context.Context, accountID string) ([]*types.Gr
 }
 
 func (s *SqlStore) getPolicies(ctx context.Context, accountID string) ([]*types.Policy, error) {
-	const query = `SELECT id, account_id, name, description, enabled, source_posture_checks FROM policies WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, name, description, enabled, source_posture_checks FROM policies WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2039,7 +2062,7 @@ func (s *SqlStore) getPolicies(ctx context.Context, accountID string) ([]*types.
 		var p types.Policy
 		var checks []byte
 		var enabled sql.NullBool
-		err := row.Scan(&p.ID, &p.AccountID, &p.Name, &p.Description, &enabled, &checks)
+		err := row.Scan(&p.ID, &p.AccountID, &p.AccountSeqID, &p.Name, &p.Description, &enabled, &checks)
 		if err == nil {
 			if enabled.Valid {
 				p.Enabled = enabled.Bool
@@ -2057,7 +2080,7 @@ func (s *SqlStore) getPolicies(ctx context.Context, accountID string) ([]*types.
 }
 
 func (s *SqlStore) getRoutes(ctx context.Context, accountID string) ([]route.Route, error) {
-	const query = `SELECT id, account_id, network, domains, keep_route, net_id, description, peer, peer_groups, network_type, masquerade, metric, enabled, groups, access_control_groups, skip_auto_apply FROM routes WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, network, domains, keep_route, net_id, description, peer, peer_groups, network_type, masquerade, metric, enabled, groups, access_control_groups, skip_auto_apply FROM routes WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2067,7 +2090,7 @@ func (s *SqlStore) getRoutes(ctx context.Context, accountID string) ([]route.Rou
 		var network, domains, peerGroups, groups, accessGroups []byte
 		var keepRoute, masquerade, enabled, skipAutoApply sql.NullBool
 		var metric sql.NullInt64
-		err := row.Scan(&r.ID, &r.AccountID, &network, &domains, &keepRoute, &r.NetID, &r.Description, &r.Peer, &peerGroups, &r.NetworkType, &masquerade, &metric, &enabled, &groups, &accessGroups, &skipAutoApply)
+		err := row.Scan(&r.ID, &r.AccountID, &r.AccountSeqID, &network, &domains, &keepRoute, &r.NetID, &r.Description, &r.Peer, &peerGroups, &r.NetworkType, &masquerade, &metric, &enabled, &groups, &accessGroups, &skipAutoApply)
 		if err == nil {
 			if keepRoute.Valid {
 				r.KeepRoute = keepRoute.Bool
@@ -2109,7 +2132,7 @@ func (s *SqlStore) getRoutes(ctx context.Context, accountID string) ([]route.Rou
 }
 
 func (s *SqlStore) getNameServerGroups(ctx context.Context, accountID string) ([]nbdns.NameServerGroup, error) {
-	const query = `SELECT id, account_id, name, description, name_servers, groups, "primary", domains, enabled, search_domains_enabled FROM name_server_groups WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, name, description, name_servers, groups, "primary", domains, enabled, search_domains_enabled FROM name_server_groups WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2118,7 +2141,7 @@ func (s *SqlStore) getNameServerGroups(ctx context.Context, accountID string) ([
 		var n nbdns.NameServerGroup
 		var ns, groups, domains []byte
 		var primary, enabled, searchDomainsEnabled sql.NullBool
-		err := row.Scan(&n.ID, &n.AccountID, &n.Name, &n.Description, &ns, &groups, &primary, &domains, &enabled, &searchDomainsEnabled)
+		err := row.Scan(&n.ID, &n.AccountID, &n.AccountSeqID, &n.Name, &n.Description, &ns, &groups, &primary, &domains, &enabled, &searchDomainsEnabled)
 		if err == nil {
 			if primary.Valid {
 				n.Primary = primary.Bool
@@ -2154,7 +2177,7 @@ func (s *SqlStore) getNameServerGroups(ctx context.Context, accountID string) ([
 }
 
 func (s *SqlStore) getPostureChecks(ctx context.Context, accountID string) ([]*posture.Checks, error) {
-	const query = `SELECT id, account_id, name, description, checks FROM posture_checks WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, name, description, checks FROM posture_checks WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2162,7 +2185,7 @@ func (s *SqlStore) getPostureChecks(ctx context.Context, accountID string) ([]*p
 	checks, err := pgx.CollectRows(rows, func(row pgx.CollectableRow) (*posture.Checks, error) {
 		var c posture.Checks
 		var checksDef []byte
-		err := row.Scan(&c.ID, &c.AccountID, &c.Name, &c.Description, &checksDef)
+		err := row.Scan(&c.ID, &c.AccountID, &c.AccountSeqID, &c.Name, &c.Description, &checksDef)
 		if err == nil && checksDef != nil {
 			_ = json.Unmarshal(checksDef, &c.Checks)
 		}
@@ -2328,7 +2351,7 @@ func (s *SqlStore) getServices(ctx context.Context, accountID string) ([]*rpserv
 }
 
 func (s *SqlStore) getNetworks(ctx context.Context, accountID string) ([]*networkTypes.Network, error) {
-	const query = `SELECT id, account_id, name, description FROM networks WHERE account_id = $1`
+	const query = `SELECT id, account_id, account_seq_id, name, description FROM networks WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2345,7 +2368,7 @@ func (s *SqlStore) getNetworks(ctx context.Context, accountID string) ([]*networ
 }
 
 func (s *SqlStore) getNetworkRouters(ctx context.Context, accountID string) ([]*routerTypes.NetworkRouter, error) {
-	const query = `SELECT id, network_id, account_id, peer, peer_groups, masquerade, metric, enabled FROM network_routers WHERE account_id = $1`
+	const query = `SELECT id, network_id, account_id, account_seq_id, peer, peer_groups, masquerade, metric, enabled FROM network_routers WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2355,7 +2378,7 @@ func (s *SqlStore) getNetworkRouters(ctx context.Context, accountID string) ([]*
 		var peerGroups []byte
 		var masquerade, enabled sql.NullBool
 		var metric sql.NullInt64
-		err := row.Scan(&r.ID, &r.NetworkID, &r.AccountID, &r.Peer, &peerGroups, &masquerade, &metric, &enabled)
+		err := row.Scan(&r.ID, &r.NetworkID, &r.AccountID, &r.AccountSeqID, &r.Peer, &peerGroups, &masquerade, &metric, &enabled)
 		if err == nil {
 			if masquerade.Valid {
 				r.Masquerade = masquerade.Bool
@@ -2383,7 +2406,7 @@ func (s *SqlStore) getNetworkRouters(ctx context.Context, accountID string) ([]*
 }
 
 func (s *SqlStore) getNetworkResources(ctx context.Context, accountID string) ([]*resourceTypes.NetworkResource, error) {
-	const query = `SELECT id, network_id, account_id, name, description, type, domain, prefix, enabled FROM network_resources WHERE account_id = $1`
+	const query = `SELECT id, network_id, account_id, account_seq_id, name, description, type, domain, prefix, enabled FROM network_resources WHERE account_id = $1`
 	rows, err := s.pool.Query(ctx, query, accountID)
 	if err != nil {
 		return nil, err
@@ -2392,7 +2415,7 @@ func (s *SqlStore) getNetworkResources(ctx context.Context, accountID string) ([
 		var r resourceTypes.NetworkResource
 		var prefix []byte
 		var enabled sql.NullBool
-		err := row.Scan(&r.ID, &r.NetworkID, &r.AccountID, &r.Name, &r.Description, &r.Type, &r.Domain, &prefix, &enabled)
+		err := row.Scan(&r.ID, &r.NetworkID, &r.AccountID, &r.AccountSeqID, &r.Name, &r.Description, &r.Type, &r.Domain, &prefix, &enabled)
 		if err == nil {
 			if enabled.Valid {
 				r.Enabled = enabled.Bool
@@ -3565,6 +3588,262 @@ func (s *SqlStore) withTx(tx *gorm.DB) Store {
 	}
 }
 
+// AllocateAccountSeqID returns the next per-account integer id for the given
+// component kind. Must be called inside ExecuteInTransaction so the increment
+// is serialized with the component insert.
+func (s *SqlStore) AllocateAccountSeqID(ctx context.Context, accountID string, entity types.AccountSeqEntity) (uint32, error) {
+	return allocateAccountSeqID(ctx, s.db, s.storeEngine, accountID, entity)
+}
+
+func allocateAccountSeqID(_ context.Context, db *gorm.DB, engine types.Engine, accountID string, entity types.AccountSeqEntity) (uint32, error) {
+	switch engine {
+	case types.PostgresStoreEngine, types.SqliteStoreEngine:
+		return allocateAccountSeqIDReturning(db, accountID, entity)
+	case types.MysqlStoreEngine:
+		return allocateAccountSeqIDMysql(db, accountID, entity)
+	default:
+		return 0, fmt.Errorf("unsupported store engine for account_seq allocator: %v", engine)
+	}
+}
+
+// allocateAccountSeqIDReturning runs a single atomic INSERT ... ON CONFLICT
+// DO UPDATE ... RETURNING that gives us the allocated id without a separate
+// SELECT FOR UPDATE. Two concurrent allocations for the same (account, entity)
+// produce two distinct ids: one wins the INSERT, the other wins the UPDATE
+// branch and returns next_id+1.
+func allocateAccountSeqIDReturning(db *gorm.DB, accountID string, entity types.AccountSeqEntity) (uint32, error) {
+	const sqlStr = `
+		INSERT INTO account_seq_counters (account_id, entity, next_id)
+		VALUES (?, ?, 2)
+		ON CONFLICT (account_id, entity) DO UPDATE
+			SET next_id = account_seq_counters.next_id + 1
+		RETURNING (next_id - 1)
+	`
+	var allocated uint32
+	if err := db.Raw(sqlStr, accountID, string(entity)).Scan(&allocated).Error; err != nil {
+		return 0, fmt.Errorf("upsert account seq counter: %w", err)
+	}
+	if allocated == 0 {
+		return 0, fmt.Errorf("upsert account seq counter returned 0")
+	}
+	return allocated, nil
+}
+
+// allocateAccountSeqIDMysql is the MySQL equivalent of allocateAccountSeqIDReturning.
+// MySQL has no RETURNING on ON DUPLICATE KEY UPDATE, so we use the LAST_INSERT_ID
+// trick: passing an expression to LAST_INSERT_ID(expr) both sets the session value
+// and returns it from the INSERT. The INSERT's value uses LAST_INSERT_ID(2) so the
+// no-conflict path also surfaces the new next_id, keeping the read-back uniform.
+// LAST_INSERT_ID is per-connection; GORM transactions pin a single connection,
+// so the follow-up SELECT sees the same value.
+func allocateAccountSeqIDMysql(db *gorm.DB, accountID string, entity types.AccountSeqEntity) (uint32, error) {
+	const upsertSQL = `
+		INSERT INTO account_seq_counters (account_id, entity, next_id)
+		VALUES (?, ?, LAST_INSERT_ID(2))
+		ON DUPLICATE KEY UPDATE next_id = LAST_INSERT_ID(next_id + 1)
+	`
+	if err := db.Exec(upsertSQL, accountID, string(entity)).Error; err != nil {
+		return 0, fmt.Errorf("upsert account seq counter: %w", err)
+	}
+	var newNext uint64
+	if err := db.Raw("SELECT LAST_INSERT_ID()").Scan(&newNext).Error; err != nil {
+		return 0, fmt.Errorf("get last insert id: %w", err)
+	}
+	if newNext == 0 {
+		return 0, fmt.Errorf("LAST_INSERT_ID returned 0; account_seq_counters misconfigured")
+	}
+	return uint32(newNext - 1), nil
+}
+
+// assignAccountSeqIDs allocates a per-account integer id for any component on
+// the in-memory account whose AccountSeqID is zero. Called from SaveAccount so
+// the canonical "save the whole account" path produces the same persisted seq
+// ids that the manager-level Create paths produce. Update flows that go
+// through SaveAccount preserve existing non-zero values; for those, the
+// per-entity counter is bumped so subsequent AllocateAccountSeqID calls don't
+// hand out a colliding id.
+func (s *SqlStore) assignAccountSeqIDs(ctx context.Context, tx *gorm.DB, account *types.Account) error {
+	maxByEntity := make(map[types.AccountSeqEntity]uint32, 8)
+	bump := func(entity types.AccountSeqEntity, seq uint32) {
+		if seq > maxByEntity[entity] {
+			maxByEntity[entity] = seq
+		}
+	}
+
+	for i := range account.GroupsG {
+		g := account.GroupsG[i]
+		if g == nil {
+			continue
+		}
+		if g.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityGroup, g.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityGroup)
+		if err != nil {
+			return err
+		}
+		g.AccountSeqID = seq
+		// Defensive: generateAccountSQLTypes currently aliases the same
+		// *Group pointer into GroupsG and Groups[id] (so this is a no-op
+		// today), but mirror the seq anyway so any future divergence in
+		// how the two collections are populated doesn't silently leave
+		// the canonical map view stale.
+		if original, ok := account.Groups[g.ID]; ok && original != nil && original != g {
+			original.AccountSeqID = seq
+		}
+	}
+	for _, p := range account.Policies {
+		if p == nil {
+			continue
+		}
+		if p.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityPolicy, p.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityPolicy)
+		if err != nil {
+			return err
+		}
+		p.AccountSeqID = seq
+	}
+	for i := range account.RoutesG {
+		r := &account.RoutesG[i]
+		if r.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityRoute, r.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityRoute)
+		if err != nil {
+			return err
+		}
+		r.AccountSeqID = seq
+		// Mirror the new seq onto the canonical map view so callers that
+		// hold the same in-memory account post-Save read a consistent
+		// AccountSeqID — without this, components/encoder code would see
+		// 0 for routes saved this transaction until the account is reloaded.
+		if original, ok := account.Routes[r.ID]; ok && original != nil {
+			original.AccountSeqID = seq
+		}
+	}
+	for i := range account.NameServerGroupsG {
+		ng := &account.NameServerGroupsG[i]
+		if ng.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityNameserverGroup, ng.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityNameserverGroup)
+		if err != nil {
+			return err
+		}
+		ng.AccountSeqID = seq
+		if original, ok := account.NameServerGroups[ng.ID]; ok && original != nil {
+			original.AccountSeqID = seq
+		}
+	}
+	for _, nr := range account.NetworkResources {
+		if nr == nil {
+			continue
+		}
+		if nr.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityNetworkResource, nr.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityNetworkResource)
+		if err != nil {
+			return err
+		}
+		nr.AccountSeqID = seq
+	}
+	for _, nr := range account.NetworkRouters {
+		if nr == nil {
+			continue
+		}
+		if nr.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityNetworkRouter, nr.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityNetworkRouter)
+		if err != nil {
+			return err
+		}
+		nr.AccountSeqID = seq
+	}
+	for _, n := range account.Networks {
+		if n == nil {
+			continue
+		}
+		if n.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityNetwork, n.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityNetwork)
+		if err != nil {
+			return err
+		}
+		n.AccountSeqID = seq
+	}
+	for _, pc := range account.PostureChecks {
+		if pc == nil {
+			continue
+		}
+		if pc.AccountSeqID != 0 {
+			bump(types.AccountSeqEntityPostureCheck, pc.AccountSeqID)
+			continue
+		}
+		seq, err := allocateAccountSeqID(ctx, tx, s.storeEngine, account.Id, types.AccountSeqEntityPostureCheck)
+		if err != nil {
+			return err
+		}
+		pc.AccountSeqID = seq
+	}
+	for entity, maxSeq := range maxByEntity {
+		if err := ensureAccountSeqCounter(tx, s.storeEngine, account.Id, entity, maxSeq+1); err != nil {
+			return fmt.Errorf("seed counter for %s: %w", entity, err)
+		}
+	}
+	return nil
+}
+
+// ensureAccountSeqCounter raises the per-account counter for entity to at
+// least target. Used when SaveAccount persists components that already carry
+// AccountSeqIDs (e.g. test bulk-load from sqlite to postgres, or migrations
+// running before component data lands) so that the next AllocateAccountSeqID
+// call returns a fresh id beyond what was just written.
+func ensureAccountSeqCounter(db *gorm.DB, engine types.Engine, accountID string, entity types.AccountSeqEntity, target uint32) error {
+	switch engine {
+	case types.PostgresStoreEngine, types.SqliteStoreEngine:
+		const sqlStr = `
+			INSERT INTO account_seq_counters (account_id, entity, next_id)
+			VALUES (?, ?, ?)
+			ON CONFLICT (account_id, entity) DO UPDATE
+				SET next_id = GREATEST(account_seq_counters.next_id, EXCLUDED.next_id)
+		`
+		// sqlite's UPSERT understands max() but the migration uses GREATEST
+		// for postgres and max() for sqlite. We collapse to dialect-specific
+		// statements only when needed.
+		if engine == types.SqliteStoreEngine {
+			const sqliteSQL = `
+				INSERT INTO account_seq_counters (account_id, entity, next_id)
+				VALUES (?, ?, ?)
+				ON CONFLICT (account_id, entity) DO UPDATE
+					SET next_id = max(account_seq_counters.next_id, excluded.next_id)
+			`
+			return db.Exec(sqliteSQL, accountID, string(entity), target).Error
+		}
+		return db.Exec(sqlStr, accountID, string(entity), target).Error
+	case types.MysqlStoreEngine:
+		const sqlStr = `
+			INSERT INTO account_seq_counters (account_id, entity, next_id)
+			VALUES (?, ?, ?)
+			ON DUPLICATE KEY UPDATE next_id = GREATEST(next_id, VALUES(next_id))
+		`
+		return db.Exec(sqlStr, accountID, string(entity), target).Error
+	default:
+		return fmt.Errorf("unsupported store engine for account_seq counter: %v", engine)
+	}
+}
+
 // transaction wraps a GORM transaction with MySQL-specific FK checks handling
 // Use this instead of db.Transaction() directly to avoid deadlocks on MySQL/Aurora
 func (s *SqlStore) transaction(fn func(*gorm.DB) error) error {
@@ -3754,7 +4033,7 @@ func (s *SqlStore) UpdateGroup(ctx context.Context, group *types.Group) error {
 		return status.Errorf(status.InvalidArgument, "group is nil")
 	}
 
-	if err := s.db.Omit(clause.Associations).Save(group).Error; err != nil {
+	if err := s.db.Omit(clause.Associations, "account_seq_id").Save(group).Error; err != nil {
 		log.WithContext(ctx).Errorf("failed to save group to store: %v", err)
 		return status.Errorf(status.Internal, "failed to save group to store")
 	}
@@ -3842,7 +4121,7 @@ func (s *SqlStore) CreatePolicy(ctx context.Context, policy *types.Policy) error
 
 // SavePolicy saves a policy to the database.
 func (s *SqlStore) SavePolicy(ctx context.Context, policy *types.Policy) error {
-	result := s.db.Session(&gorm.Session{FullSaveAssociations: true}).Save(policy)
+	result := s.db.Session(&gorm.Session{FullSaveAssociations: true}).Omit("account_seq_id").Save(policy)
 	if err := result.Error; err != nil {
 		log.WithContext(ctx).Errorf("failed to save policy to the store: %s", err)
 		return status.Errorf(status.Internal, "failed to save policy to store")

management/server/store/store.go

@@ -220,6 +220,11 @@ type Store interface {
 	GetStoreEngine() types.Engine
 	ExecuteInTransaction(ctx context.Context, f func(store Store) error) error
 
+	// AllocateAccountSeqID returns the next per-account integer id for the given
+	// component kind. Must run inside a transaction so the increment is serialized
+	// with the component insert.
+	AllocateAccountSeqID(ctx context.Context, accountID string, entity types.AccountSeqEntity) (uint32, error)
+
 	GetAccountNetworks(ctx context.Context, lockStrength LockingStrength, accountID string) ([]*networkTypes.Network, error)
 	GetNetworkByID(ctx context.Context, lockStrength LockingStrength, accountID, networkID string) (*networkTypes.Network, error)
 	SaveNetwork(ctx context.Context, network *networkTypes.Network) error
@@ -522,6 +527,30 @@ func getMigrationsPostAuto(ctx context.Context) []migrationFunc {
 		func(db *gorm.DB) error {
 			return migration.DropIndex[proxy.Proxy](ctx, db, "idx_proxy_account_id_unique")
 		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[types.Policy](ctx, db, types.AccountSeqEntityPolicy, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[types.Group](ctx, db, types.AccountSeqEntityGroup, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[route.Route](ctx, db, types.AccountSeqEntityRoute, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[resourceTypes.NetworkResource](ctx, db, types.AccountSeqEntityNetworkResource, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[routerTypes.NetworkRouter](ctx, db, types.AccountSeqEntityNetworkRouter, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[dns.NameServerGroup](ctx, db, types.AccountSeqEntityNameserverGroup, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[networkTypes.Network](ctx, db, types.AccountSeqEntityNetwork, "id")
+		},
+		func(db *gorm.DB) error {
+			return migration.BackfillAccountSeqIDs[posture.Checks](ctx, db, types.AccountSeqEntityPostureCheck, "id")
+		},
 	}
 }
 

management/server/store/store_mock.go

@@ -746,6 +746,21 @@ func (mr *MockStoreMockRecorder) EphemeralServiceExists(ctx, lockStrength, accou
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EphemeralServiceExists", reflect.TypeOf((*MockStore)(nil).EphemeralServiceExists), ctx, lockStrength, accountID, peerID, domain)
 }
 
+// AllocateAccountSeqID mocks base method.
+func (m *MockStore) AllocateAccountSeqID(ctx context.Context, accountID string, entity types2.AccountSeqEntity) (uint32, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "AllocateAccountSeqID", ctx, accountID, entity)
+	ret0, _ := ret[0].(uint32)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// AllocateAccountSeqID indicates an expected call of AllocateAccountSeqID.
+func (mr *MockStoreMockRecorder) AllocateAccountSeqID(ctx, accountID, entity interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AllocateAccountSeqID", reflect.TypeOf((*MockStore)(nil).AllocateAccountSeqID), ctx, accountID, entity)
+}
+
 // ExecuteInTransaction mocks base method.
 func (m *MockStore) ExecuteInTransaction(ctx context.Context, f func(Store) error) error {
 	m.ctrl.T.Helper()

management/server/types/account.go

@@ -1006,6 +1006,15 @@ func (a *Account) connResourcesGenerator(ctx context.Context, targetPeer *nbpeer
 		}
 }
 
+// PolicyRuleImpliesLegacySSH reports whether the rule (without an explicit
+// NetbirdSSH protocol) implicitly authorises SSH because it permits TCP/22 or
+// TCP/22022 — either by ALL-protocol coverage or by an explicit port/port-range
+// containing one of those. Exposed for ToComponentSyncResponse so the
+// envelope-format response mirrors the legacy SshConfig.SshEnabled bit.
+func PolicyRuleImpliesLegacySSH(rule *PolicyRule) bool {
+	return policyRuleImpliesLegacySSH(rule)
+}
+
 func policyRuleImpliesLegacySSH(rule *PolicyRule) bool {
 	return rule.Protocol == PolicyRuleProtocolALL || (rule.Protocol == PolicyRuleProtocolTCP && (portsIncludesSSH(rule.Ports) || portRangeIncludesSSH(rule.PortRanges)))
 }

management/server/types/account_components.go

@@ -16,6 +16,49 @@ import (
 	"github.com/netbirdio/netbird/route"
 )
 
+// GetPeerNetworkMapResult dispatches to either the legacy-NetworkMap path or
+// the components path based on the peer's capability and the kill switch.
+// Capable peers (PeerCapabilityComponentNetworkMap) get the raw components
+// shape — the server skips Calculate() entirely for them, saving CPU
+// proportional to the number of capable peers in the account. Legacy peers
+// (or any peer when componentsDisabled is true) get the fully-expanded
+// NetworkMap as before.
+func (a *Account) GetPeerNetworkMapResult(
+	ctx context.Context,
+	peerID string,
+	componentsDisabled bool,
+	peersCustomZone nbdns.CustomZone,
+	accountZones []*zones.Zone,
+	validatedPeersMap map[string]struct{},
+	resourcePolicies map[string][]*Policy,
+	routers map[string]map[string]*routerTypes.NetworkRouter,
+	metrics *telemetry.AccountManagerMetrics,
+	groupIDToUserIDs map[string][]string,
+) PeerNetworkMapResult {
+	peer := a.Peers[peerID]
+	if !componentsDisabled && peer != nil && peer.SupportsComponentNetworkMap() {
+		components := a.GetPeerNetworkMapComponents(
+			ctx, peerID, peersCustomZone, accountZones, validatedPeersMap, resourcePolicies, routers, groupIDToUserIDs,
+		)
+		// Mirror legacy graceful-degrade: GetPeerNetworkMapFromComponents
+		// returns &NetworkMap{Network: a.Network.Copy()} when components is
+		// nil. Match that floor so the receiving client always sees the
+		// account Network identifier, not a fully-empty envelope.
+		if components == nil {
+			components = &NetworkMapComponents{
+				PeerID:  peerID,
+				Network: a.Network.Copy(),
+			}
+		}
+		return PeerNetworkMapResult{Components: components}
+	}
+	return PeerNetworkMapResult{
+		NetworkMap: a.GetPeerNetworkMapFromComponents(
+			ctx, peerID, peersCustomZone, accountZones, validatedPeersMap, resourcePolicies, routers, metrics, groupIDToUserIDs,
+		),
+	}
+}
+
 func (a *Account) GetPeerNetworkMapFromComponents(
 	ctx context.Context,
 	peerID string,
@@ -82,15 +125,27 @@ func (a *Account) GetPeerNetworkMapComponents(
 	}
 
 	components := &NetworkMapComponents{
-		PeerID:              peerID,
-		Network:             a.Network.Copy(),
-		NameServerGroups:    make([]*nbdns.NameServerGroup, 0),
-		CustomZoneDomain:    peersCustomZone.Domain,
-		ResourcePoliciesMap: make(map[string][]*Policy),
-		RoutersMap:          make(map[string]map[string]*routerTypes.NetworkRouter),
-		NetworkResources:    make([]*resourceTypes.NetworkResource, 0),
-		PostureFailedPeers:  make(map[string]map[string]struct{}, len(a.PostureChecks)),
-		RouterPeers:         make(map[string]*nbpeer.Peer),
+		PeerID:               peerID,
+		Network:              a.Network.Copy(),
+		NameServerGroups:     make([]*nbdns.NameServerGroup, 0),
+		CustomZoneDomain:     peersCustomZone.Domain,
+		ResourcePoliciesMap:  make(map[string][]*Policy),
+		RoutersMap:           make(map[string]map[string]*routerTypes.NetworkRouter),
+		NetworkResources:     make([]*resourceTypes.NetworkResource, 0),
+		PostureFailedPeers:   make(map[string]map[string]struct{}, len(a.PostureChecks)),
+		RouterPeers:          make(map[string]*nbpeer.Peer),
+		NetworkXIDToSeq:      make(map[string]uint32, len(a.Networks)),
+		PostureCheckXIDToSeq: make(map[string]uint32, len(a.PostureChecks)),
+	}
+	for _, n := range a.Networks {
+		if n != nil && n.HasSeqID() {
+			components.NetworkXIDToSeq[n.ID] = n.AccountSeqID
+		}
+	}
+	for _, pc := range a.PostureChecks {
+		if pc != nil && pc.HasSeqID() {
+			components.PostureCheckXIDToSeq[pc.ID] = pc.AccountSeqID
+		}
 	}
 
 	components.AccountSettings = &AccountSettingsInfo{
@@ -253,18 +308,44 @@ func (a *Account) getPeersGroupsPoliciesRoutes(
 
 	relevantPeerIDs[peerID] = a.GetPeer(peerID)
 
+	peerGroupSet := make(map[string]struct{}, 8)
 	for groupID, group := range a.Groups {
 		if slices.Contains(group.Peers, peerID) {
 			relevantGroupIDs[groupID] = a.GetGroup(groupID)
+			peerGroupSet[groupID] = struct{}{}
 		}
 	}
 
 	routeAccessControlGroups := make(map[string]struct{})
 	for _, r := range a.Routes {
-		for _, groupID := range r.Groups {
+		if r == nil {
+			continue
+		}
+		relevant := r.Peer == peerID
+		if !relevant {
+			for _, groupID := range r.PeerGroups {
+				if _, ok := peerGroupSet[groupID]; ok {
+					relevant = true
+					break
+				}
+			}
+		}
+		if !relevant && r.Enabled {
+			for _, groupID := range r.Groups {
+				if _, ok := peerGroupSet[groupID]; ok {
+					relevant = true
+					break
+				}
+			}
+		}
+		if !relevant {
+			continue
+		}
+
+		for _, groupID := range r.PeerGroups {
 			relevantGroupIDs[groupID] = a.GetGroup(groupID)
 		}
-		for _, groupID := range r.PeerGroups {
+		for _, groupID := range r.Groups {
 			relevantGroupIDs[groupID] = a.GetGroup(groupID)
 		}
 		if r.Enabled {
@@ -485,6 +566,13 @@ func (a *Account) getPostureValidPeersSaveFailed(inputPeers []string, postureChe
 	return dest
 }
 
+// filterGroupPeers trims each group's Peers slice to only those peers that
+// also appear in `peers`. Groups whose filtered list is empty are NOT
+// deleted from the map — they're kept so the components wire encoder can
+// still resolve seq references from routes/policies/access-control groups
+// that name them. Calculate() tolerates groups with empty Peers (the inner
+// loops simply iterate zero times), so retaining them is behaviourally a
+// no-op for the legacy path that consumes the same NetworkMapComponents.
 func filterGroupPeers(groups *map[string]*Group, peers map[string]*nbpeer.Peer) {
 	for groupID, groupInfo := range *groups {
 		filteredPeers := make([]string, 0, len(groupInfo.Peers))
@@ -494,9 +582,7 @@ func filterGroupPeers(groups *map[string]*Group, peers map[string]*nbpeer.Peer)
 			}
 		}
 
-		if len(filteredPeers) == 0 {
-			delete(*groups, groupID)
-		} else if len(filteredPeers) != len(groupInfo.Peers) {
+		if len(filteredPeers) != len(groupInfo.Peers) {
 			ng := groupInfo.Copy()
 			ng.Peers = filteredPeers
 			(*groups)[groupID] = ng

management/server/types/account_seq_counter.go

@@ -0,0 +1,29 @@
+package types
+
+// AccountSeqEntity identifies the kind of component that uses a per-account sequence.
+type AccountSeqEntity string
+
+const (
+	AccountSeqEntityPolicy          AccountSeqEntity = "policy"
+	AccountSeqEntityGroup           AccountSeqEntity = "group"
+	AccountSeqEntityRoute           AccountSeqEntity = "route"
+	AccountSeqEntityNetworkResource AccountSeqEntity = "network_resource"
+	AccountSeqEntityNetworkRouter   AccountSeqEntity = "network_router"
+	AccountSeqEntityNameserverGroup AccountSeqEntity = "nameserver_group"
+	AccountSeqEntityNetwork         AccountSeqEntity = "network"
+	AccountSeqEntityPostureCheck    AccountSeqEntity = "posture_check"
+)
+
+// AccountSeqCounter tracks the next per-account integer id for a given component
+// kind. Reads/writes go through the store inside the same transaction as the
+// component insert so two concurrent inserts cannot collide on the same id.
+type AccountSeqCounter struct {
+	AccountID string `gorm:"primaryKey;size:255"`
+	Entity    string `gorm:"primaryKey;size:32"`
+	NextID    uint32 `gorm:"not null;default:1"`
+}
+
+// TableName overrides the GORM-derived table name.
+func (AccountSeqCounter) TableName() string {
+	return "account_seq_counters"
+}

management/server/types/group.go

@@ -19,6 +19,10 @@ type Group struct {
 	// AccountID is a reference to Account that this object belongs
 	AccountID string `json:"-" gorm:"index"`
 
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_groups_account_seq_id;not null;default:0"`
+
 	// Name visible in the UI
 	Name string
 
@@ -41,6 +45,14 @@ type GroupPeer struct {
 	PeerID    string `gorm:"primaryKey"`
 }
 
+// HasSeqID reports whether the group has been persisted long enough to have a
+// per-account sequence id allocated. Wire encoders that key off AccountSeqID
+// must skip groups that return false here — otherwise multiple unpersisted
+// groups would collide on id 0.
+func (g *Group) HasSeqID() bool {
+	return g != nil && g.AccountSeqID != 0
+}
+
 func (g *Group) LoadGroupPeers() {
 	g.Peers = make([]string, len(g.GroupPeers))
 	for i, peer := range g.GroupPeers {
@@ -74,6 +86,7 @@ func (g *Group) Copy() *Group {
 	group := &Group{
 		ID:                   g.ID,
 		AccountID:            g.AccountID,
+		AccountSeqID:         g.AccountSeqID,
 		Name:                 g.Name,
 		Issued:               g.Issued,
 		Peers:                make([]string, len(g.Peers)),

management/server/types/networkmap_components.go

@@ -42,6 +42,17 @@ type NetworkMapComponents struct {
 	PostureFailedPeers map[string]map[string]struct{}
 
 	RouterPeers map[string]*nbpeer.Peer
+
+	// NetworkXIDToSeq maps Network.ID (xid) → AccountSeqID. Populated by the
+	// account-side component builder; consumed by the envelope encoder to
+	// translate RoutersMap keys and NetworkResource.NetworkID references
+	// to compact uint32 ids. Legacy Calculate() doesn't consult it.
+	NetworkXIDToSeq map[string]uint32
+
+	// PostureCheckXIDToSeq maps posture.Checks.ID (xid) → AccountSeqID.
+	// Same role as NetworkXIDToSeq, used for PostureFailedPeers keys and
+	// policy SourcePostureChecks references.
+	PostureCheckXIDToSeq map[string]uint32
 }
 
 type AccountSettingsInfo struct {

management/server/types/networkmap_wire_benchmark_test.go

@@ -0,0 +1,181 @@
+package types_test
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"testing"
+
+	goproto "google.golang.org/protobuf/proto"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	"github.com/netbirdio/netbird/management/internals/controllers/network_map/controller/cache"
+	mgmtgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
+	"github.com/netbirdio/netbird/management/server/types"
+)
+
+// wireBenchScales mirrors the scales used by networkmap_benchmark_test.go but
+// trimmed: encoding+marshal are linear, so we don't need the 30k peer extreme
+// to see the trend.
+var wireBenchScales = []benchmarkScale{
+	{"100peers_5groups", 100, 5},
+	{"500peers_20groups", 500, 20},
+	{"1000peers_50groups", 1000, 50},
+	{"5000peers_100groups", 5000, 100},
+}
+
+// populateAccountSeqIDs assigns deterministic AccountSeqIDs to every group and
+// policy in the account so that the component encoder can reference them. The
+// scalableTestAccount fixture builds entities by struct literal and skips this
+// step, but production paths populate the IDs via the store layer.
+func populateAccountSeqIDs(account *types.Account) {
+	var nextGroupSeq uint32 = 1
+	for _, g := range account.Groups {
+		g.AccountSeqID = nextGroupSeq
+		nextGroupSeq++
+	}
+	var nextPolicySeq uint32 = 1
+	for _, p := range account.Policies {
+		p.AccountSeqID = nextPolicySeq
+		nextPolicySeq++
+	}
+}
+
+// assignValidWgKeys overwrites every peer's Key with a valid base64-encoded
+// 32-byte string. The default scalableTestAccount uses unparsable strings
+// like "key-peer-0", which makes the components encoder emit a nil WgPubKey
+// and the legacy encoder ship 10-char placeholders — both shrink the wire
+// size in unrealistic ways. Production peers always have valid 44-char base64
+// keys, so any benchmark/breakdown that wants honest numbers must call this.
+func assignValidWgKeys(account *types.Account) {
+	for _, p := range account.Peers {
+		var raw [32]byte
+		_, _ = rand.Read(raw[:])
+		p.Key = base64.StdEncoding.EncodeToString(raw[:])
+	}
+}
+
+// BenchmarkNetworkMapWireEncode reports per-call ns and the marshaled wire
+// size for both encoding paths. Run with:
+//
+//	go test -run=^$ -bench=BenchmarkNetworkMapWireEncode -benchmem ./management/server/types/
+func BenchmarkNetworkMapWireEncode(b *testing.B) {
+	skipCIBenchmark(b)
+
+	for _, scale := range wireBenchScales {
+		account, validatedPeers := scalableTestAccount(scale.peers, scale.groups)
+		populateAccountSeqIDs(account)
+		assignValidWgKeys(account)
+
+		ctx := context.Background()
+		resourcePolicies := account.GetResourcePoliciesMap()
+		routers := account.GetResourceRoutersMap()
+		groupIDToUserIDs := account.GetActiveGroupUsers()
+
+		peerID := "peer-0"
+		peer := account.Peers[peerID]
+
+		networkMap := account.GetPeerNetworkMapFromComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, nil, groupIDToUserIDs)
+		components := account.GetPeerNetworkMapComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, groupIDToUserIDs)
+
+		dnsCache := &cache.DNSConfigCache{}
+		settings := &types.Settings{}
+
+		// Pre-encode once so the size metric is identical for every run inside
+		// the same scale; the b.Loop call only re-runs encode + Marshal.
+		legacyResp := mgmtgrpc.ToSyncResponse(ctx, nil, nil, nil, peer, nil, nil, networkMap, "netbird.cloud", nil, dnsCache, settings, nil, nil, 0)
+		legacyBytes, err := goproto.Marshal(legacyResp.NetworkMap)
+		if err != nil {
+			b.Fatalf("marshal legacy networkmap: %v", err)
+		}
+
+		envelopeInput := mgmtgrpc.ComponentsEnvelopeInput{
+			Components: components,
+			PeerConfig: legacyResp.NetworkMap.PeerConfig,
+			DNSDomain:  "netbird.cloud",
+		}
+		envelope := mgmtgrpc.EncodeNetworkMapEnvelope(envelopeInput)
+		envelopeBytes, err := goproto.Marshal(envelope)
+		if err != nil {
+			b.Fatalf("marshal envelope: %v", err)
+		}
+
+		b.Run(fmt.Sprintf("legacy/%s", scale.name), func(b *testing.B) {
+			b.ReportAllocs()
+			b.ReportMetric(float64(len(legacyBytes)), "bytes/msg")
+			b.ResetTimer()
+			for range b.N {
+				resp := mgmtgrpc.ToSyncResponse(ctx, nil, nil, nil, peer, nil, nil, networkMap, "netbird.cloud", nil, dnsCache, settings, nil, nil, 0)
+				if _, err := goproto.Marshal(resp.NetworkMap); err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+
+		b.Run(fmt.Sprintf("components/%s", scale.name), func(b *testing.B) {
+			b.ReportAllocs()
+			b.ReportMetric(float64(len(envelopeBytes)), "bytes/msg")
+			b.ResetTimer()
+			for range b.N {
+				env := mgmtgrpc.EncodeNetworkMapEnvelope(envelopeInput)
+				if _, err := goproto.Marshal(env); err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}
+
+// BenchmarkNetworkMapWireSize is a fast snapshot of the wire size by scale
+// without a tight encode loop. Run with -bench to see one ns/op + bytes per
+// scale (treat the timing as informational; the sample is one Marshal per
+// scale, not the full b.N loop).
+func BenchmarkNetworkMapWireSize(b *testing.B) {
+	skipCIBenchmark(b)
+
+	for _, scale := range wireBenchScales {
+		account, validatedPeers := scalableTestAccount(scale.peers, scale.groups)
+		populateAccountSeqIDs(account)
+		assignValidWgKeys(account)
+
+		ctx := context.Background()
+		resourcePolicies := account.GetResourcePoliciesMap()
+		routers := account.GetResourceRoutersMap()
+		groupIDToUserIDs := account.GetActiveGroupUsers()
+
+		peerID := "peer-0"
+		peer := account.Peers[peerID]
+
+		networkMap := account.GetPeerNetworkMapFromComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, nil, groupIDToUserIDs)
+		components := account.GetPeerNetworkMapComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, groupIDToUserIDs)
+
+		dnsCache := &cache.DNSConfigCache{}
+		settings := &types.Settings{}
+
+		legacyResp := mgmtgrpc.ToSyncResponse(ctx, nil, nil, nil, peer, nil, nil, networkMap, "netbird.cloud", nil, dnsCache, settings, nil, nil, 0)
+		legacyBytes, err := goproto.Marshal(legacyResp.NetworkMap)
+		if err != nil {
+			b.Fatalf("marshal legacy networkmap: %v", err)
+		}
+
+		env := mgmtgrpc.EncodeNetworkMapEnvelope(mgmtgrpc.ComponentsEnvelopeInput{
+			Components: components,
+			PeerConfig: legacyResp.NetworkMap.PeerConfig,
+			DNSDomain:  "netbird.cloud",
+		})
+		envBytes, err := goproto.Marshal(env)
+		if err != nil {
+			b.Fatalf("marshal envelope: %v", err)
+		}
+
+		b.Run(fmt.Sprintf("size/%s", scale.name), func(b *testing.B) {
+			b.ReportMetric(float64(len(legacyBytes)), "legacy_bytes")
+			b.ReportMetric(float64(len(envBytes)), "components_bytes")
+			ratio := float64(len(envBytes)) / float64(len(legacyBytes))
+			b.ReportMetric(ratio, "components/legacy")
+			for range b.N {
+			}
+		})
+	}
+}

management/server/types/networkmap_wire_breakdown_test.go

@@ -0,0 +1,150 @@
+package types_test
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+
+	goproto "google.golang.org/protobuf/proto"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	"github.com/netbirdio/netbird/management/internals/controllers/network_map/controller/cache"
+	mgmtgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
+	"github.com/netbirdio/netbird/management/server/types"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// TestNetworkMapWireBreakdown is a one-shot diagnostic: it computes the wire
+// size attributable to each top-level field of both the legacy NetworkMap and
+// the components NetworkMapEnvelope at the 5000-peer scale, so the migration
+// docs can attribute the size reduction to each optimization. Runs only on
+// demand via -run TestNetworkMapWireBreakdown.
+func TestNetworkMapWireBreakdown(t *testing.T) {
+	if testing.Short() {
+		t.Skip("size diagnostic, skipped with -short")
+	}
+	if os.Getenv("NB_RUN_WIRE_BREAKDOWN") != "1" {
+		t.Skip("set NB_RUN_WIRE_BREAKDOWN=1 to run wire breakdown diagnostic")
+	}
+
+	const peerCount, groupCount = 5000, 100
+	account, validatedPeers := scalableTestAccount(peerCount, groupCount)
+	populateAccountSeqIDs(account)
+	assignValidWgKeys(account)
+
+	ctx := context.Background()
+	resourcePolicies := account.GetResourcePoliciesMap()
+	routers := account.GetResourceRoutersMap()
+	groupIDToUserIDs := account.GetActiveGroupUsers()
+
+	peerID := "peer-0"
+	peer := account.Peers[peerID]
+	networkMap := account.GetPeerNetworkMapFromComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, nil, groupIDToUserIDs)
+	components := account.GetPeerNetworkMapComponents(ctx, peerID, nbdns.CustomZone{}, nil, validatedPeers, resourcePolicies, routers, groupIDToUserIDs)
+
+	dnsCache := &cache.DNSConfigCache{}
+	settings := &types.Settings{}
+
+	legacyResp := mgmtgrpc.ToSyncResponse(ctx, nil, nil, nil, peer, nil, nil, networkMap, "netbird.cloud", nil, dnsCache, settings, nil, nil, 0)
+	legacyTotal := mustMarshalSize(t, legacyResp.NetworkMap)
+
+	envelope := mgmtgrpc.EncodeNetworkMapEnvelope(mgmtgrpc.ComponentsEnvelopeInput{
+		Components: components,
+		PeerConfig: legacyResp.NetworkMap.PeerConfig,
+		DNSDomain:  "netbird.cloud",
+	})
+	componentsTotal := mustMarshalSize(t, envelope)
+
+	t.Logf("\n=== LEGACY NetworkMap (%d peers, %d groups) ===", peerCount, groupCount)
+	t.Logf("  Total: %d bytes\n", legacyTotal)
+
+	legacyBreakdown := []struct {
+		name string
+		nm   *proto.NetworkMap
+	}{
+		{"RemotePeers", &proto.NetworkMap{RemotePeers: legacyResp.NetworkMap.RemotePeers}},
+		{"OfflinePeers", &proto.NetworkMap{OfflinePeers: legacyResp.NetworkMap.OfflinePeers}},
+		{"FirewallRules", &proto.NetworkMap{FirewallRules: legacyResp.NetworkMap.FirewallRules}},
+		{"Routes", &proto.NetworkMap{Routes: legacyResp.NetworkMap.Routes}},
+		{"RoutesFirewallRules", &proto.NetworkMap{RoutesFirewallRules: legacyResp.NetworkMap.RoutesFirewallRules}},
+		{"DNSConfig", &proto.NetworkMap{DNSConfig: legacyResp.NetworkMap.DNSConfig}},
+		{"PeerConfig", &proto.NetworkMap{PeerConfig: legacyResp.NetworkMap.PeerConfig}},
+		{"SshAuth", &proto.NetworkMap{SshAuth: legacyResp.NetworkMap.SshAuth}},
+	}
+	for _, e := range legacyBreakdown {
+		size := mustMarshalSize(t, e.nm)
+		t.Logf("  %-22s %8d bytes  %5.1f%%", e.name, size, pct(size, legacyTotal))
+	}
+
+	full := envelope.GetFull()
+	if full == nil {
+		t.Fatalf("expected full network map envelope payload, got nil")
+	}
+	t.Logf("\n=== COMPONENTS NetworkMapEnvelope (%d peers, %d groups) ===", peerCount, groupCount)
+	t.Logf("  Total: %d bytes  (%.1f%% of legacy)\n", componentsTotal, pct(componentsTotal, legacyTotal))
+
+	componentsBreakdown := []struct {
+		name string
+		nm   *proto.NetworkMapComponentsFull
+	}{
+		{"Peers", &proto.NetworkMapComponentsFull{Peers: full.Peers}},
+		{"Policies", &proto.NetworkMapComponentsFull{Policies: full.Policies}},
+		{"Groups", &proto.NetworkMapComponentsFull{Groups: full.Groups}},
+		{"Routes (raw)", &proto.NetworkMapComponentsFull{Routes: full.Routes}},
+		{"NameServerGroups", &proto.NetworkMapComponentsFull{NameserverGroups: full.NameserverGroups}},
+		{"AllDNSRecords", &proto.NetworkMapComponentsFull{AllDnsRecords: full.AllDnsRecords}},
+		{"AccountZones", &proto.NetworkMapComponentsFull{AccountZones: full.AccountZones}},
+		{"NetworkResources", &proto.NetworkMapComponentsFull{NetworkResources: full.NetworkResources}},
+		{"RoutersMap", &proto.NetworkMapComponentsFull{RoutersMap: full.RoutersMap}},
+		{"ResourcePoliciesMap", &proto.NetworkMapComponentsFull{ResourcePoliciesMap: full.ResourcePoliciesMap}},
+		{"GroupIDToUserIDs", &proto.NetworkMapComponentsFull{GroupIdToUserIds: full.GroupIdToUserIds}},
+		{"AllowedUserIDs", &proto.NetworkMapComponentsFull{AllowedUserIds: full.AllowedUserIds}},
+		{"PostureFailedPeers", &proto.NetworkMapComponentsFull{PostureFailedPeers: full.PostureFailedPeers}},
+		{"DNSSettings", &proto.NetworkMapComponentsFull{DnsSettings: full.DnsSettings}},
+		{"PeerConfig", &proto.NetworkMapComponentsFull{PeerConfig: full.PeerConfig}},
+		{"AgentVersions", &proto.NetworkMapComponentsFull{AgentVersions: full.AgentVersions}},
+	}
+	for _, e := range componentsBreakdown {
+		size := mustMarshalSize(t, e.nm)
+		t.Logf("  %-22s %8d bytes  %5.1f%%", e.name, size, pct(size, componentsTotal))
+	}
+
+	t.Logf("\n=== Per-PeerCompact average ===")
+	if len(full.Peers) > 0 {
+		t.Logf("  PeerCompact avg: %d bytes/peer", mustMarshalSize(t, &proto.NetworkMapComponentsFull{Peers: full.Peers})/len(full.Peers))
+	}
+	if len(legacyResp.NetworkMap.RemotePeers) > 0 {
+		t.Logf("  RemotePeer avg:  %d bytes/peer",
+			mustMarshalSize(t, &proto.NetworkMap{RemotePeers: legacyResp.NetworkMap.RemotePeers})/len(legacyResp.NetworkMap.RemotePeers))
+	}
+
+	t.Logf("\n=== FirewallRule expansion footprint ===")
+	t.Logf("  legacy FirewallRules count: %d", len(legacyResp.NetworkMap.FirewallRules))
+	t.Logf("  components Policies count:  %d", len(full.Policies))
+	t.Logf("  components Groups count:    %d", len(full.Groups))
+
+	totalGroupPeerIdxs := 0
+	for _, g := range full.Groups {
+		totalGroupPeerIdxs += len(g.PeerIndexes)
+	}
+	t.Logf("  components peer-index refs across all groups: %d", totalGroupPeerIdxs)
+}
+
+func mustMarshalSize(t *testing.T, m goproto.Message) int {
+	b, err := goproto.Marshal(m)
+	if err != nil {
+		t.Fatalf("marshal: %v", err)
+	}
+	return len(b)
+}
+
+func pct(part, total int) float64 {
+	if total == 0 {
+		return 0
+	}
+	return 100 * float64(part) / float64(total)
+}
+
+// Stops fmt being unused if the breakdown loop above is later commented out.
+var _ = fmt.Sprintf

management/server/types/peer_networkmap_result.go

@@ -0,0 +1,25 @@
+package types
+
+// PeerNetworkMapResult is what the network_map controller produces for a
+// single peer. Exactly one of NetworkMap or Components is populated depending
+// on the peer's capability:
+//
+//   - Components-capable peers (PeerCapabilityComponentNetworkMap) get
+//     Components: the raw types.NetworkMapComponents the client decodes and
+//     runs Calculate() on locally. NetworkMap stays nil — the server skips
+//     the expansion entirely.
+//   - Legacy peers (or any peer when the kill switch is set) get NetworkMap:
+//     the fully-expanded view the legacy gRPC path consumes.
+//
+// The gRPC layer (ToSyncResponseForPeer) dispatches by which field is
+// non-nil; callers must not rely on both being set.
+type PeerNetworkMapResult struct {
+	NetworkMap *NetworkMap
+	Components *NetworkMapComponents
+}
+
+// IsComponents reports whether the result carries the components shape.
+// Use this in preference to direct nil checks on the fields.
+func (r PeerNetworkMapResult) IsComponents() bool {
+	return r.Components != nil
+}

management/server/types/peer_networkmap_result_test.go

@@ -0,0 +1,104 @@
+package types_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+)
+
+// helper: marks the given peer as components-capable.
+func markCapable(p *nbpeer.Peer) {
+	p.Meta.Capabilities = append(p.Meta.Capabilities, nbpeer.PeerCapabilityComponentNetworkMap)
+}
+
+func TestGetPeerNetworkMapResult_CapablePeerGetsComponents(t *testing.T) {
+	account, validatedPeers := scalableTestAccount(10, 2)
+	markCapable(account.Peers["peer-0"])
+
+	resourcePolicies := account.GetResourcePoliciesMap()
+	routers := account.GetResourceRoutersMap()
+	groupIDToUserIDs := account.GetActiveGroupUsers()
+
+	result := account.GetPeerNetworkMapResult(
+		context.Background(),
+		"peer-0",
+		false, // componentsDisabled
+		nbdns.CustomZone{},
+		nil,
+		validatedPeers,
+		resourcePolicies,
+		routers,
+		nil,
+		groupIDToUserIDs,
+	)
+
+	require.True(t, result.IsComponents(), "capable peer must get the components shape")
+	assert.Nil(t, result.NetworkMap)
+	require.NotNil(t, result.Components)
+	assert.Equal(t, "peer-0", result.Components.PeerID)
+}
+
+func TestGetPeerNetworkMapResult_LegacyPeerGetsNetworkMap(t *testing.T) {
+	account, validatedPeers := scalableTestAccount(10, 2)
+	// peer-0 left without the component capability
+
+	resourcePolicies := account.GetResourcePoliciesMap()
+	routers := account.GetResourceRoutersMap()
+	groupIDToUserIDs := account.GetActiveGroupUsers()
+
+	result := account.GetPeerNetworkMapResult(
+		context.Background(),
+		"peer-0",
+		false,
+		nbdns.CustomZone{},
+		nil,
+		validatedPeers,
+		resourcePolicies,
+		routers,
+		nil,
+		groupIDToUserIDs,
+	)
+
+	assert.False(t, result.IsComponents())
+	assert.Nil(t, result.Components)
+	require.NotNil(t, result.NetworkMap, "legacy peer must get a NetworkMap")
+}
+
+func TestGetPeerNetworkMapResult_KillSwitchOverridesCapability(t *testing.T) {
+	// Capable peer + componentsDisabled=true → falls back to legacy.
+	account, validatedPeers := scalableTestAccount(10, 2)
+	markCapable(account.Peers["peer-0"])
+
+	resourcePolicies := account.GetResourcePoliciesMap()
+	routers := account.GetResourceRoutersMap()
+	groupIDToUserIDs := account.GetActiveGroupUsers()
+
+	result := account.GetPeerNetworkMapResult(
+		context.Background(),
+		"peer-0",
+		true, // componentsDisabled = true (kill switch)
+		nbdns.CustomZone{},
+		nil,
+		validatedPeers,
+		resourcePolicies,
+		routers,
+		nil,
+		groupIDToUserIDs,
+	)
+
+	assert.False(t, result.IsComponents(), "kill switch must force legacy NetworkMap path")
+	assert.Nil(t, result.Components)
+	require.NotNil(t, result.NetworkMap)
+}
+
+func TestPeerNetworkMapResult_IsComponents(t *testing.T) {
+	assert.True(t, types.PeerNetworkMapResult{Components: &types.NetworkMapComponents{}}.IsComponents())
+	assert.False(t, types.PeerNetworkMapResult{NetworkMap: &types.NetworkMap{}}.IsComponents())
+	assert.False(t, types.PeerNetworkMapResult{}.IsComponents())
+}

management/server/types/policy.go

@@ -59,6 +59,10 @@ type Policy struct {
 	// AccountID is a reference to Account that this object belongs
 	AccountID string `json:"-" gorm:"index"`
 
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_policies_account_seq_id;not null;default:0"`
+
 	// Name of the Policy
 	Name string
 
@@ -75,11 +79,19 @@ type Policy struct {
 	SourcePostureChecks []string `gorm:"serializer:json"`
 }
 
+// HasSeqID reports whether the policy has been persisted long enough to have
+// a per-account sequence id allocated. Wire encoders that key off
+// AccountSeqID must skip policies that return false here.
+func (p *Policy) HasSeqID() bool {
+	return p != nil && p.AccountSeqID != 0
+}
+
 // Copy returns a copy of the policy.
 func (p *Policy) Copy() *Policy {
 	c := &Policy{
 		ID:                  p.ID,
 		AccountID:           p.AccountID,
+		AccountSeqID:        p.AccountSeqID,
 		Name:                p.Name,
 		Description:         p.Description,
 		Enabled:             p.Enabled,

route/route.go

@@ -95,6 +95,9 @@ type Route struct {
 	ID ID `gorm:"primaryKey"`
 	// AccountID is a reference to Account that this object belongs
 	AccountID string `gorm:"index"`
+	// AccountSeqID is a per-account monotonically increasing identifier used as the
+	// compact wire id when sending NetworkMap components to capable peers.
+	AccountSeqID uint32 `json:"-" gorm:"index:idx_routes_account_seq_id;not null;default:0"`
 	// Network and Domains are mutually exclusive
 	Network             netip.Prefix `gorm:"serializer:json"`
 	Domains             domain.List  `gorm:"serializer:json"`
@@ -128,6 +131,7 @@ func (r *Route) Copy() *Route {
 	route := &Route{
 		ID:                  r.ID,
 		AccountID:           r.AccountID,
+		AccountSeqID:        r.AccountSeqID,
 		Description:         r.Description,
 		NetID:               r.NetID,
 		Network:             r.Network,

shared/management/client/client_test.go

@@ -316,27 +316,74 @@ func TestClient_Sync(t *testing.T) {
 
 	select {
 	case resp := <-ch:
-		if resp.GetPeerConfig() == nil {
+		if resp.GetPeerConfig() == nil && resp.GetNetworkMap().GetPeerConfig() == nil {
 			t.Error("expecting non nil PeerConfig got nil")
 		}
 		if resp.GetNetbirdConfig() == nil {
 			t.Error("expecting non nil NetbirdConfig got nil")
 		}
-		if len(resp.GetRemotePeers()) != 1 {
-			t.Errorf("expecting RemotePeers size %d got %d", 1, len(resp.GetRemotePeers()))
+		// Component-capable clients receive a NetworkMapEnvelope; the
+		// remote-peers list is encoded inside it. Decode it and check the
+		// envelope's peers slice. Legacy peers populate the top-level
+		// RemotePeers; both shapes must surface exactly one remote peer.
+		remotePeerKeys := remotePeerKeysFromSync(resp, testKey.PublicKey().String())
+		if len(remotePeerKeys) != 1 {
+			t.Errorf("expecting RemotePeers size %d got %d", 1, len(remotePeerKeys))
 			return
 		}
-		if resp.GetRemotePeersIsEmpty() == true {
+		if resp.GetNetworkMap() != nil && resp.GetRemotePeersIsEmpty() {
 			t.Error("expecting RemotePeers property to be false, got true")
 		}
-		if resp.GetRemotePeers()[0].GetWgPubKey() != remoteKey.PublicKey().String() {
-			t.Errorf("expecting RemotePeer public key %s got %s", remoteKey.PublicKey().String(), resp.GetRemotePeers()[0].GetWgPubKey())
+		if remotePeerKeys[0] != remoteKey.PublicKey().String() {
+			t.Errorf("expecting RemotePeer public key %s got %s", remoteKey.PublicKey().String(), remotePeerKeys[0])
 		}
 	case <-time.After(3 * time.Second):
 		t.Error("timeout waiting for test to finish")
 	}
 }
 
+// remotePeerKeysFromSync extracts the remote-peer WG keys from either the
+// legacy NetworkMap.RemotePeers list or the components NetworkMapEnvelope's
+// inner peers slice (filtering out the local receiving peer identified by
+// localKey, since the envelope's peers list is index-addressed and includes
+// the local peer alongside remotes).
+func remotePeerKeysFromSync(resp *mgmtProto.SyncResponse, localKey string) []string {
+	if rp := resp.GetRemotePeers(); len(rp) > 0 {
+		out := make([]string, 0, len(rp))
+		for _, p := range rp {
+			out = append(out, p.GetWgPubKey())
+		}
+		return out
+	}
+	env := resp.GetNetworkMapEnvelope().GetFull()
+	if env == nil {
+		return nil
+	}
+	out := make([]string, 0, len(env.GetPeers()))
+	for _, p := range env.GetPeers() {
+		key := wgKeyFromBytes(p.GetWgPubKey())
+		if key == "" || key == localKey {
+			continue
+		}
+		out = append(out, key)
+	}
+	return out
+}
+
+// wgKeyFromBytes mirrors the client-side decoder: the envelope ships raw 32
+// bytes; reconstruct the standard base64 key the test compares against.
+func wgKeyFromBytes(raw []byte) string {
+	if len(raw) == 0 {
+		return ""
+	}
+	var k wgtypes.Key
+	if len(raw) != len(k) {
+		return ""
+	}
+	copy(k[:], raw)
+	return k.String()
+}
+
 func Test_SystemMetaDataFromClient(t *testing.T) {
 	s, lis, mgmtMockServer, serverKey := startMockManagement(t)
 	defer s.GracefulStop()

shared/management/client/grpc.go

@@ -950,6 +950,13 @@ func infoToMetaData(info *system.Info) *proto.PeerSystemMeta {
 func peerCapabilities(info system.Info) []proto.PeerCapability {
 	caps := []proto.PeerCapability{
 		proto.PeerCapability_PeerCapabilitySourcePrefixes,
+		// PeerCapabilityComponentNetworkMap signals that this client can
+		// decode the components-format SyncResponse.NetworkMapEnvelope and
+		// run Calculate() locally. Always advertised by Step-4-capable
+		// builds — there's no opt-out flag because the server-side kill
+		// switch (NB_NETWORK_MAP_COMPONENTS_DISABLE) covers emergency
+		// rollback and the client decoder is built in.
+		proto.PeerCapability_PeerCapabilityComponentNetworkMap,
 	}
 	if !info.DisableIPv6 {
 		caps = append(caps, proto.PeerCapability_PeerCapabilityIPv6Overlay)

shared/management/networkmap/decode.go

@@ -0,0 +1,607 @@
+package networkmap
+
+import (
+	"encoding/base64"
+	"fmt"
+	"net"
+	"net/netip"
+	"strconv"
+	"time"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	resourceTypes "github.com/netbirdio/netbird/management/server/networks/resources/types"
+	routerTypes "github.com/netbirdio/netbird/management/server/networks/routers/types"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	nbroute "github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/shared/management/domain"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// DecodeEnvelope converts a NetworkMapEnvelope into a NetworkMapComponents
+// the client can run Calculate() over. Every ID-reference on the wire is a
+// uint32 (peer index or account_seq_id) — no xid strings travel. The decoder
+// synthesises consistent string IDs from the uint32s so the reconstructed
+// components struct round-trips through Calculate exactly the way the
+// server-side typed components would.
+//
+// Synthetic ID scheme (underscore-separated, visually distinct from the xid
+// format Calculate would put in log lines under the legacy path):
+//
+//	Peers              "p_<wire_index>"            // envelope.peers is index-addressed
+//	Groups             "g_<account_seq_id>"
+//	Policies           "pol_<account_seq_id>"      // 1 rule per policy
+//	Routes             "r_<account_seq_id>"
+//	Network resources  "nres_<account_seq_id>"
+//	Posture checks     "pc_<account_seq_id>"
+//	Networks           "net_<account_seq_id>"
+//	Nameserver groups  "nsg_<account_seq_id>"
+func DecodeEnvelope(env *proto.NetworkMapEnvelope) (*types.NetworkMapComponents, error) {
+	if env == nil {
+		return nil, fmt.Errorf("nil envelope")
+	}
+	full := env.GetFull()
+	if full == nil {
+		return nil, fmt.Errorf("envelope has no Full payload")
+	}
+
+	c := &types.NetworkMapComponents{
+		PeerID:              "", // engine fills its own peer id from PeerConfig
+		Network:             decodeAccountNetwork(full.Network),
+		AccountSettings:     decodeAccountSettings(full.AccountSettings),
+		CustomZoneDomain:    full.CustomZoneDomain,
+		Peers:               make(map[string]*nbpeer.Peer, len(full.Peers)),
+		Groups:              make(map[string]*types.Group, len(full.Groups)),
+		Policies:            make([]*types.Policy, 0, len(full.Policies)),
+		Routes:              make([]*nbroute.Route, 0, len(full.Routes)),
+		NameServerGroups:    make([]*nbdns.NameServerGroup, 0, len(full.NameserverGroups)),
+		AllDNSRecords:       decodeSimpleRecords(full.AllDnsRecords),
+		AccountZones:        decodeCustomZones(full.AccountZones),
+		ResourcePoliciesMap: make(map[string][]*types.Policy),
+		RoutersMap:          make(map[string]map[string]*routerTypes.NetworkRouter),
+		NetworkResources:    make([]*resourceTypes.NetworkResource, 0, len(full.NetworkResources)),
+		RouterPeers:         make(map[string]*nbpeer.Peer),
+		AllowedUserIDs:      stringSliceToSet(full.AllowedUserIds),
+		PostureFailedPeers:  make(map[string]map[string]struct{}, len(full.PostureFailedPeers)),
+		GroupIDToUserIDs:    make(map[string][]string, len(full.GroupIdToUserIds)),
+	}
+
+	if full.DnsSettings != nil {
+		c.DNSSettings = &types.DNSSettings{
+			DisabledManagementGroups: groupIDsFromSeqs(full.DnsSettings.DisabledManagementGroupIds),
+		}
+	} else {
+		c.DNSSettings = &types.DNSSettings{}
+	}
+
+	// Phase 1: peers. The envelope's peers slice is index-addressed; we
+	// build a peerOrder lookup for downstream references. Peer.ID is
+	// synthesized from the peer's wire index — wire format ships no xid
+	// for peers (and never has).
+	peerIDByIndex := make([]string, len(full.Peers))
+	for idx, pc := range full.Peers {
+		if pc == nil {
+			return nil, fmt.Errorf("invalid envelope: peers[%d] is nil", idx)
+		}
+		peerID := synthPeerID(uint32(idx))
+		peer := decodePeerCompact(pc, peerID, full.AgentVersions)
+		c.Peers[peerID] = peer
+		peerIDByIndex[idx] = peerID
+	}
+
+	// Phase 2: groups. AccountSeqID becomes both the synthesized string ID
+	// and the GroupCompact.id wire value.
+	for i, gc := range full.Groups {
+		if gc == nil {
+			return nil, fmt.Errorf("invalid envelope: groups[%d] is nil", i)
+		}
+		groupID := synthGroupID(gc.Id)
+		peerIDs := make([]string, 0, len(gc.PeerIndexes))
+		for _, idx := range gc.PeerIndexes {
+			if int(idx) < len(peerIDByIndex) {
+				peerIDs = append(peerIDs, peerIDByIndex[idx])
+			}
+		}
+		c.Groups[groupID] = &types.Group{
+			ID:           groupID,
+			AccountSeqID: gc.Id,
+			Name:         gc.Name,
+			Peers:        peerIDs,
+		}
+	}
+
+	// Phase 3: policies (PolicyCompact = one rule per entry; current data
+	// model is 1 rule per policy). Policy.ID is synthesized from the
+	// per-account seq id; proto.FirewallRule.PolicyID downstream carries
+	// the same synth string (no xid on the wire).
+	for i, pc := range full.Policies {
+		if pc == nil {
+			return nil, fmt.Errorf("invalid envelope: policies[%d] is nil", i)
+		}
+		policyID := synthPolicyID(pc.Id)
+		c.Policies = append(c.Policies, decodePolicyCompact(pc, policyID, peerIDByIndex))
+	}
+
+	// Phase 4: routes.
+	for i, rr := range full.Routes {
+		if rr == nil {
+			return nil, fmt.Errorf("invalid envelope: routes[%d] is nil", i)
+		}
+		c.Routes = append(c.Routes, decodeRouteRaw(rr, peerIDByIndex))
+	}
+
+	// Phase 5: NSGs.
+	for i, nsg := range full.NameserverGroups {
+		if nsg == nil {
+			return nil, fmt.Errorf("invalid envelope: nameserver_groups[%d] is nil", i)
+		}
+		c.NameServerGroups = append(c.NameServerGroups, decodeNameServerGroupRaw(nsg))
+	}
+
+	// Phase 6: network resources.
+	for i, nr := range full.NetworkResources {
+		if nr == nil {
+			return nil, fmt.Errorf("invalid envelope: network_resources[%d] is nil", i)
+		}
+		c.NetworkResources = append(c.NetworkResources, decodeNetworkResource(nr))
+	}
+
+	// Phase 7: routers_map (outer key = network seq id, inner key = peer-id
+	// reconstructed from peer_index). Synthesized network id is "net_<seq>".
+	for networkSeq, list := range full.RoutersMap {
+		networkID := synthNetworkID(networkSeq)
+		inner := make(map[string]*routerTypes.NetworkRouter, len(list.Entries))
+		for _, entry := range list.Entries {
+			if !entry.PeerIndexSet {
+				continue
+			}
+			if int(entry.PeerIndex) >= len(peerIDByIndex) {
+				continue
+			}
+			peerID := peerIDByIndex[entry.PeerIndex]
+			inner[peerID] = &routerTypes.NetworkRouter{
+				ID:           "",
+				NetworkID:    networkID,
+				AccountSeqID: entry.Id,
+				Peer:         peerID,
+				PeerGroups:   groupIDsFromSeqs(entry.PeerGroupIds),
+				Masquerade:   entry.Masquerade,
+				Metric:       int(entry.Metric),
+				Enabled:      entry.Enabled,
+			}
+		}
+		if len(inner) > 0 {
+			c.RoutersMap[networkID] = inner
+		}
+	}
+
+	// Phase 8: resource_policies_map (resource seq id → list of *types.Policy
+	// pointers from the decoded policies slice). Resource ID is synthesized
+	// the same way as in decodeNetworkResource.
+	for resourceSeq, idxs := range full.ResourcePoliciesMap {
+		if len(idxs.Indexes) == 0 {
+			continue
+		}
+		resourceID := synthNetworkResourceID(resourceSeq)
+		policies := make([]*types.Policy, 0, len(idxs.Indexes))
+		for _, i := range idxs.Indexes {
+			if int(i) < len(c.Policies) {
+				policies = append(policies, c.Policies[i])
+			}
+		}
+		if len(policies) > 0 {
+			c.ResourcePoliciesMap[resourceID] = policies
+		}
+	}
+
+	// Phase 9: group_id_to_user_ids — wire keys are seq ids, synth to strings.
+	for groupSeq, list := range full.GroupIdToUserIds {
+		c.GroupIDToUserIDs[synthGroupID(groupSeq)] = append([]string(nil), list.UserIds...)
+	}
+
+	// Phase 10: posture_failed_peers — wire keys are posture-check seq ids,
+	// values are peer indexes that need to be turned into peer ids. PolicyRule
+	// SourcePostureChecks (also synth ids) reference the same key space.
+	for checkSeq, set := range full.PostureFailedPeers {
+		checkID := synthPostureCheckID(checkSeq)
+		failed := make(map[string]struct{}, len(set.PeerIndexes))
+		for _, idx := range set.PeerIndexes {
+			if int(idx) < len(peerIDByIndex) {
+				failed[peerIDByIndex[idx]] = struct{}{}
+			}
+		}
+		if len(failed) > 0 {
+			c.PostureFailedPeers[checkID] = failed
+		}
+	}
+
+	// Phase 11: router_peer_indexes — peers that act as routers. They're
+	// already in c.Peers (router peers are appended to the global peers
+	// list by the encoder); RouterPeers is the subset.
+	for _, idx := range full.RouterPeerIndexes {
+		if int(idx) < len(peerIDByIndex) {
+			peerID := peerIDByIndex[idx]
+			c.RouterPeers[peerID] = c.Peers[peerID]
+		}
+	}
+
+	return c, nil
+}
+
+func decodeAccountNetwork(an *proto.AccountNetwork) *types.Network {
+	if an == nil {
+		return nil
+	}
+	n := &types.Network{
+		Identifier: an.Identifier,
+		Dns:        an.Dns,
+		Serial:     an.Serial,
+	}
+	if an.NetCidr != "" {
+		if _, ipnet, err := net.ParseCIDR(an.NetCidr); err == nil && ipnet != nil {
+			n.Net = *ipnet
+		}
+	}
+	if an.NetV6Cidr != "" {
+		if _, ipnet, err := net.ParseCIDR(an.NetV6Cidr); err == nil && ipnet != nil {
+			n.NetV6 = *ipnet
+		}
+	}
+	return n
+}
+
+func decodeAccountSettings(as *proto.AccountSettingsCompact) *types.AccountSettingsInfo {
+	if as == nil {
+		return &types.AccountSettingsInfo{}
+	}
+	return &types.AccountSettingsInfo{
+		PeerLoginExpirationEnabled: as.PeerLoginExpirationEnabled,
+		PeerLoginExpiration:        time.Duration(as.PeerLoginExpirationNs),
+	}
+}
+
+func decodePeerCompact(pc *proto.PeerCompact, peerID string, agentVersions []string) *nbpeer.Peer {
+	var caps []int32
+	if pc.SupportsSourcePrefixes {
+		caps = append(caps, nbpeer.PeerCapabilitySourcePrefixes)
+	}
+	if pc.SupportsIpv6 {
+		caps = append(caps, nbpeer.PeerCapabilityIPv6Overlay)
+	}
+	peer := &nbpeer.Peer{
+		ID:                     peerID,
+		Key:                    encodeWgKeyBase64(pc.WgPubKey),
+		SSHKey:                 string(pc.SshPubKey),
+		SSHEnabled:             pc.SshEnabled,
+		DNSLabel:               pc.DnsLabel,
+		LoginExpirationEnabled: pc.LoginExpirationEnabled,
+		Meta: nbpeer.PeerSystemMeta{
+			WtVersion:    lookupAgentVersion(agentVersions, pc.AgentVersionIdx),
+			Capabilities: caps,
+			Flags: nbpeer.Flags{
+				ServerSSHAllowed: pc.ServerSshAllowed,
+			},
+		},
+	}
+	if pc.AddedWithSsoLogin {
+		// Set a non-empty UserID so (*Peer).AddedWithSSOLogin() returns true.
+		// The original UserID isn't on the wire; the value is intentionally
+		// visibly synthetic so any future consumer that mistakes UserID for a
+		// real account user xid won't silently match (or worse, write the
+		// sentinel into a downstream record).
+		peer.UserID = "<env-sso>"
+	}
+	if pc.LastLoginUnixNano != 0 {
+		t := time.Unix(0, pc.LastLoginUnixNano)
+		peer.LastLogin = &t
+	}
+	switch len(pc.Ip) {
+	case 4:
+		peer.IP = netip.AddrFrom4([4]byte{pc.Ip[0], pc.Ip[1], pc.Ip[2], pc.Ip[3]})
+	case 16:
+		var a [16]byte
+		copy(a[:], pc.Ip)
+		peer.IP = netip.AddrFrom16(a)
+	}
+	if len(pc.Ipv6) == 16 {
+		var a [16]byte
+		copy(a[:], pc.Ipv6)
+		peer.IPv6 = netip.AddrFrom16(a)
+	}
+	return peer
+}
+
+func decodePolicyCompact(pc *proto.PolicyCompact, policyID string, peerIDByIndex []string) *types.Policy {
+	rule := &types.PolicyRule{
+		ID:                  policyID, // 1 rule per policy → reuse synthesized id
+		PolicyID:            policyID,
+		Enabled:             true,
+		Action:              actionFromProto(pc.Action),
+		Protocol:            protocolFromProto(pc.Protocol),
+		Bidirectional:       pc.Bidirectional,
+		Ports:               uint32SliceToStrings(pc.Ports),
+		PortRanges:          portRangesFromProto(pc.PortRanges),
+		Sources:             groupIDsFromSeqs(pc.SourceGroupIds),
+		Destinations:        groupIDsFromSeqs(pc.DestinationGroupIds),
+		AuthorizedUser:      pc.AuthorizedUser,
+		AuthorizedGroups:    authorizedGroupsFromProto(pc.AuthorizedGroups),
+		SourceResource:      resourceFromProto(pc.SourceResource, peerIDByIndex),
+		DestinationResource: resourceFromProto(pc.DestinationResource, peerIDByIndex),
+	}
+	return &types.Policy{
+		ID:                  policyID,
+		AccountSeqID:        pc.Id,
+		Enabled:             true,
+		Rules:               []*types.PolicyRule{rule},
+		SourcePostureChecks: postureCheckIDsFromSeqs(pc.SourcePostureCheckSeqIds),
+	}
+}
+
+// resourceFromProto rebuilds types.Resource. For peer-typed resources the
+// peer reference is reconstructed from the envelope's peer index — wire
+// format ships no xid for peers, so we use the synthesized peer id.
+func resourceFromProto(r *proto.ResourceCompact, peerIDByIndex []string) types.Resource {
+	if r == nil {
+		return types.Resource{}
+	}
+	out := types.Resource{Type: types.ResourceType(r.Type)}
+	if r.PeerIndexSet && int(r.PeerIndex) < len(peerIDByIndex) {
+		out.ID = peerIDByIndex[r.PeerIndex]
+	}
+	return out
+}
+
+// postureCheckIDsFromSeqs synths posture-check ids from per-account seq ids.
+// Mirrors groupIDsFromSeqs.
+func postureCheckIDsFromSeqs(seqs []uint32) []string {
+	if len(seqs) == 0 {
+		return nil
+	}
+	out := make([]string, len(seqs))
+	for i, s := range seqs {
+		out[i] = synthPostureCheckID(s)
+	}
+	return out
+}
+
+// authorizedGroupsFromProto inverts encodeAuthorizedGroups: the wire form
+// keys by group account_seq_id, the typed PolicyRule field keys by group
+// xid string. We rebuild using the same synthetic scheme the rest of the
+// decoder uses ("g<seq>").
+func authorizedGroupsFromProto(m map[uint32]*proto.UserNameList) map[string][]string {
+	if len(m) == 0 {
+		return nil
+	}
+	out := make(map[string][]string, len(m))
+	for seq, list := range m {
+		if list == nil {
+			continue
+		}
+		out[synthGroupID(seq)] = append([]string(nil), list.Names...)
+	}
+	return out
+}
+
+func decodeRouteRaw(rr *proto.RouteRaw, peerIDByIndex []string) *nbroute.Route {
+	r := &nbroute.Route{
+		ID:                  nbroute.ID(synthRouteID(rr.Id)),
+		AccountSeqID:        rr.Id,
+		NetID:               nbroute.NetID(rr.NetId),
+		Description:         rr.Description,
+		Domains:             domainsFromPunycode(rr.Domains),
+		KeepRoute:           rr.KeepRoute,
+		NetworkType:         nbroute.NetworkType(rr.NetworkType),
+		Masquerade:          rr.Masquerade,
+		Metric:              int(rr.Metric),
+		Enabled:             rr.Enabled,
+		Groups:              groupIDsFromSeqs(rr.GroupIds),
+		AccessControlGroups: groupIDsFromSeqs(rr.AccessControlGroupIds),
+		PeerGroups:          groupIDsFromSeqs(rr.PeerGroupIds),
+		SkipAutoApply:       rr.SkipAutoApply,
+	}
+	if rr.NetworkCidr != "" {
+		if p, err := netip.ParsePrefix(rr.NetworkCidr); err == nil {
+			r.Network = p
+		}
+	}
+	if rr.PeerIndexSet && int(rr.PeerIndex) < len(peerIDByIndex) {
+		r.Peer = peerIDByIndex[rr.PeerIndex]
+	}
+	return r
+}
+
+func decodeNameServerGroupRaw(nsg *proto.NameServerGroupRaw) *nbdns.NameServerGroup {
+	out := &nbdns.NameServerGroup{
+		ID:                   synthNameServerGroupID(nsg.Id),
+		AccountSeqID:         nsg.Id,
+		Name:                 nsg.Name,
+		Description:          nsg.Description,
+		Groups:               groupIDsFromSeqs(nsg.GroupIds),
+		Primary:              nsg.Primary,
+		Domains:              nsg.Domains,
+		Enabled:              nsg.Enabled,
+		SearchDomainsEnabled: nsg.SearchDomainsEnabled,
+		NameServers:          make([]nbdns.NameServer, 0, len(nsg.Nameservers)),
+	}
+	for _, ns := range nsg.Nameservers {
+		if addr, err := netip.ParseAddr(ns.IP); err == nil {
+			out.NameServers = append(out.NameServers, nbdns.NameServer{
+				IP:     addr,
+				NSType: nbdns.NameServerType(ns.NSType),
+				Port:   int(ns.Port),
+			})
+		}
+	}
+	return out
+}
+
+func decodeNetworkResource(nr *proto.NetworkResourceRaw) *resourceTypes.NetworkResource {
+	out := &resourceTypes.NetworkResource{
+		ID:           synthNetworkResourceID(nr.Id),
+		AccountSeqID: nr.Id,
+		NetworkID:    synthNetworkID(nr.NetworkSeq),
+		Name:         nr.Name,
+		Description:  nr.Description,
+		Type:         resourceTypes.NetworkResourceType(nr.Type),
+		Address:      nr.Address,
+		Domain:       nr.DomainValue,
+		Enabled:      nr.Enabled,
+	}
+	if nr.PrefixCidr != "" {
+		if p, err := netip.ParsePrefix(nr.PrefixCidr); err == nil {
+			out.Prefix = p
+		}
+	}
+	return out
+}
+
+func decodeSimpleRecords(records []*proto.SimpleRecord) []nbdns.SimpleRecord {
+	out := make([]nbdns.SimpleRecord, 0, len(records))
+	for _, r := range records {
+		out = append(out, nbdns.SimpleRecord{
+			Name:  r.Name,
+			Type:  int(r.Type),
+			Class: r.Class,
+			TTL:   int(r.TTL),
+			RData: r.RData,
+		})
+	}
+	return out
+}
+
+func decodeCustomZones(zones []*proto.CustomZone) []nbdns.CustomZone {
+	out := make([]nbdns.CustomZone, 0, len(zones))
+	for _, z := range zones {
+		out = append(out, nbdns.CustomZone{
+			Domain:               z.Domain,
+			Records:              decodeSimpleRecords(z.Records),
+			SearchDomainDisabled: z.SearchDomainDisabled,
+			NonAuthoritative:     z.NonAuthoritative,
+		})
+	}
+	return out
+}
+
+// Synthetic ID generators — deterministic given the same wire input.
+// Underscore-separated ("p_<n>", "pol_<n>", ...) so they're visually
+// distinct in operator logs. fmt.Sprintf would dominate the decode hot path
+// on large accounts (a 10k-peer envelope produces ~50k synth calls); the
+// strconv.AppendUint builder keeps it allocation-light.
+func synthID(prefix string, n uint32) string {
+	buf := make([]byte, 0, len(prefix)+10)
+	buf = append(buf, prefix...)
+	buf = strconv.AppendUint(buf, uint64(n), 10)
+	return string(buf)
+}
+
+func synthPeerID(idx uint32) string            { return synthID("p_", idx) }
+func synthGroupID(seq uint32) string           { return synthID("g_", seq) }
+func synthPolicyID(seq uint32) string          { return synthID("pol_", seq) }
+func synthRouteID(seq uint32) string           { return synthID("r_", seq) }
+func synthNetworkResourceID(seq uint32) string { return synthID("nres_", seq) }
+func synthPostureCheckID(seq uint32) string    { return synthID("pc_", seq) }
+func synthNetworkID(seq uint32) string         { return synthID("net_", seq) }
+func synthNameServerGroupID(seq uint32) string { return synthID("nsg_", seq) }
+
+func groupIDsFromSeqs(seqs []uint32) []string {
+	if len(seqs) == 0 {
+		return nil
+	}
+	out := make([]string, len(seqs))
+	for i, s := range seqs {
+		out[i] = synthGroupID(s)
+	}
+	return out
+}
+
+func uint32SliceToStrings(ports []uint32) []string {
+	if len(ports) == 0 {
+		return nil
+	}
+	out := make([]string, len(ports))
+	for i, p := range ports {
+		out[i] = strconv.FormatUint(uint64(p), 10)
+	}
+	return out
+}
+
+func portRangesFromProto(ranges []*proto.PortInfo_Range) []types.RulePortRange {
+	if len(ranges) == 0 {
+		return nil
+	}
+	out := make([]types.RulePortRange, 0, len(ranges))
+	for _, r := range ranges {
+		if r == nil || r.Start > 65535 || r.End > 65535 {
+			continue
+		}
+		out = append(out, types.RulePortRange{
+			Start: uint16(r.Start),
+			End:   uint16(r.End),
+		})
+	}
+	return out
+}
+
+func actionFromProto(a proto.RuleAction) types.PolicyTrafficActionType {
+	if a == proto.RuleAction_DROP {
+		return types.PolicyTrafficActionDrop
+	}
+	return types.PolicyTrafficActionAccept
+}
+
+func protocolFromProto(p proto.RuleProtocol) types.PolicyRuleProtocolType {
+	switch p {
+	case proto.RuleProtocol_TCP:
+		return types.PolicyRuleProtocolTCP
+	case proto.RuleProtocol_UDP:
+		return types.PolicyRuleProtocolUDP
+	case proto.RuleProtocol_ICMP:
+		return types.PolicyRuleProtocolICMP
+	case proto.RuleProtocol_ALL:
+		return types.PolicyRuleProtocolALL
+	case proto.RuleProtocol_NETBIRD_SSH:
+		return types.PolicyRuleProtocolNetbirdSSH
+	default:
+		return types.PolicyRuleProtocolALL
+	}
+}
+
+func encodeWgKeyBase64(raw []byte) string {
+	if len(raw) != 32 {
+		return ""
+	}
+	return base64.StdEncoding.EncodeToString(raw)
+}
+
+func lookupAgentVersion(table []string, idx uint32) string {
+	if int(idx) < len(table) {
+		return table[idx]
+	}
+	return ""
+}
+
+func stringSliceToSet(s []string) map[string]struct{} {
+	if len(s) == 0 {
+		return nil
+	}
+	out := make(map[string]struct{}, len(s))
+	for _, v := range s {
+		out[v] = struct{}{}
+	}
+	return out
+}
+
+// domainsFromPunycode is a thin wrapper that converts a punycode list back to
+// the domain.List type the route.Route struct expects. It accepts the
+// punycode strings as-is (no extra decoding) — symmetric with
+// route.Domains.ToPunycodeList() used in the encoder.
+func domainsFromPunycode(punycoded []string) domain.List {
+	if len(punycoded) == 0 {
+		return nil
+	}
+	out := make(domain.List, 0, len(punycoded))
+	for _, d := range punycoded {
+		out = append(out, domain.Domain(d))
+	}
+	return out
+}

shared/management/networkmap/encode.go

@@ -0,0 +1,323 @@
+// Package networkmap contains the shared NetworkMap helpers that both the
+// management server and the client agent need.
+//
+// The proto-conversion helpers (types.NetworkMap → proto.NetworkMap) live
+// here so the client can run the same conversion locally after deriving its
+// NetworkMap from a NetworkMapEnvelope, without taking a dependency on the
+// server-side conversion package (which pulls in cloud integrations and is
+// otherwise an unwanted internal import on the client).
+//
+// The helpers are pure functions over inputs — no caches, no IO, no logging
+// beyond a context-aware error log when an individual user-id hash fails.
+package networkmap
+
+import (
+	"context"
+
+	log "github.com/sirupsen/logrus"
+	goproto "google.golang.org/protobuf/proto"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+	"net/netip"
+
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	nbroute "github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/shared/management/proto"
+	"github.com/netbirdio/netbird/shared/netiputil"
+	"github.com/netbirdio/netbird/shared/sshauth"
+)
+
+// ToProtocolRoutes converts a slice of typed routes to their proto form.
+func ToProtocolRoutes(routes []*nbroute.Route) []*proto.Route {
+	protoRoutes := make([]*proto.Route, 0, len(routes))
+	for _, r := range routes {
+		protoRoutes = append(protoRoutes, ToProtocolRoute(r))
+	}
+	return protoRoutes
+}
+
+// ToProtocolRoute converts one typed route to its proto form.
+func ToProtocolRoute(route *nbroute.Route) *proto.Route {
+	return &proto.Route{
+		ID:            string(route.ID),
+		NetID:         string(route.NetID),
+		Network:       route.Network.String(),
+		Domains:       route.Domains.ToPunycodeList(),
+		NetworkType:   int64(route.NetworkType),
+		Peer:          route.Peer,
+		Metric:        int64(route.Metric),
+		Masquerade:    route.Masquerade,
+		KeepRoute:     route.KeepRoute,
+		SkipAutoApply: route.SkipAutoApply,
+	}
+}
+
+// ToProtocolFirewallRules converts the firewall rules to the protocol form.
+// When useSourcePrefixes is true, the compact SourcePrefixes field is
+// populated alongside the deprecated PeerIP for forward compatibility.
+// Wildcard rules ("0.0.0.0") are expanded into separate v4/v6 SourcePrefixes
+// when includeIPv6 is true.
+func ToProtocolFirewallRules(rules []*types.FirewallRule, includeIPv6, useSourcePrefixes bool) []*proto.FirewallRule {
+	result := make([]*proto.FirewallRule, 0, len(rules))
+	for i := range rules {
+		rule := rules[i]
+
+		fwRule := &proto.FirewallRule{
+			PolicyID:  []byte(rule.PolicyID),
+			PeerIP:    rule.PeerIP, //nolint:staticcheck // populated for backward compatibility
+			Direction: GetProtoDirection(rule.Direction),
+			Action:    GetProtoAction(rule.Action),
+			Protocol:  GetProtoProtocol(rule.Protocol),
+			Port:      rule.Port,
+		}
+
+		if useSourcePrefixes && rule.PeerIP != "" {
+			result = append(result, populateSourcePrefixes(fwRule, rule, includeIPv6)...)
+		}
+
+		if ShouldUsePortRange(fwRule) {
+			fwRule.PortInfo = rule.PortRange.ToProto()
+		}
+
+		result = append(result, fwRule)
+	}
+	return result
+}
+
+// populateSourcePrefixes sets SourcePrefixes on fwRule and returns any
+// additional rules needed (e.g. a v6 wildcard clone when the peer IP is
+// unspecified).
+func populateSourcePrefixes(fwRule *proto.FirewallRule, rule *types.FirewallRule, includeIPv6 bool) []*proto.FirewallRule {
+	addr, err := netip.ParseAddr(rule.PeerIP)
+	if err != nil {
+		return nil
+	}
+
+	if !addr.IsUnspecified() {
+		fwRule.SourcePrefixes = [][]byte{netiputil.EncodeAddr(addr.Unmap())}
+		return nil
+	}
+
+	v4Wildcard, _ := netiputil.EncodePrefix(netip.PrefixFrom(netip.IPv4Unspecified(), 0))
+	fwRule.SourcePrefixes = [][]byte{v4Wildcard}
+
+	if !includeIPv6 {
+		return nil
+	}
+
+	v6Rule := goproto.Clone(fwRule).(*proto.FirewallRule)
+	v6Rule.PeerIP = "::" //nolint:staticcheck // populated for backward compatibility
+	v6Wildcard, _ := netiputil.EncodePrefix(netip.PrefixFrom(netip.IPv6Unspecified(), 0))
+	v6Rule.SourcePrefixes = [][]byte{v6Wildcard}
+	if ShouldUsePortRange(v6Rule) {
+		v6Rule.PortInfo = rule.PortRange.ToProto()
+	}
+	return []*proto.FirewallRule{v6Rule}
+}
+
+// GetProtoDirection converts the direction to proto.RuleDirection.
+func GetProtoDirection(direction int) proto.RuleDirection {
+	if direction == types.FirewallRuleDirectionOUT {
+		return proto.RuleDirection_OUT
+	}
+	return proto.RuleDirection_IN
+}
+
+// GetProtoAction converts the action to proto.RuleAction.
+func GetProtoAction(action string) proto.RuleAction {
+	if action == string(types.PolicyTrafficActionDrop) {
+		return proto.RuleAction_DROP
+	}
+	return proto.RuleAction_ACCEPT
+}
+
+// GetProtoProtocol converts the protocol to proto.RuleProtocol.
+func GetProtoProtocol(protocol string) proto.RuleProtocol {
+	switch types.PolicyRuleProtocolType(protocol) {
+	case types.PolicyRuleProtocolALL:
+		return proto.RuleProtocol_ALL
+	case types.PolicyRuleProtocolTCP:
+		return proto.RuleProtocol_TCP
+	case types.PolicyRuleProtocolUDP:
+		return proto.RuleProtocol_UDP
+	case types.PolicyRuleProtocolICMP:
+		return proto.RuleProtocol_ICMP
+	case types.PolicyRuleProtocolNetbirdSSH:
+		return proto.RuleProtocol_NETBIRD_SSH
+	default:
+		return proto.RuleProtocol_UNKNOWN
+	}
+}
+
+// GetProtoPortInfo converts route-firewall-rule port info to proto.PortInfo.
+func GetProtoPortInfo(rule *types.RouteFirewallRule) *proto.PortInfo {
+	var portInfo proto.PortInfo
+	if rule.Port != 0 {
+		portInfo.PortSelection = &proto.PortInfo_Port{Port: uint32(rule.Port)}
+	} else if portRange := rule.PortRange; portRange.Start != 0 && portRange.End != 0 {
+		portInfo.PortSelection = &proto.PortInfo_Range_{
+			Range: &proto.PortInfo_Range{
+				Start: uint32(portRange.Start),
+				End:   uint32(portRange.End),
+			},
+		}
+	}
+	return &portInfo
+}
+
+// ShouldUsePortRange reports whether the firewall rule should use a port
+// range rather than a single port (TCP/UDP without a single port).
+func ShouldUsePortRange(rule *proto.FirewallRule) bool {
+	return rule.Port == "" && (rule.Protocol == proto.RuleProtocol_UDP || rule.Protocol == proto.RuleProtocol_TCP)
+}
+
+// ToProtocolRoutesFirewallRules converts a slice of typed route-firewall
+// rules to proto.
+func ToProtocolRoutesFirewallRules(rules []*types.RouteFirewallRule) []*proto.RouteFirewallRule {
+	result := make([]*proto.RouteFirewallRule, len(rules))
+	for i := range rules {
+		rule := rules[i]
+		result[i] = &proto.RouteFirewallRule{
+			SourceRanges: rule.SourceRanges,
+			Action:       GetProtoAction(rule.Action),
+			Destination:  rule.Destination,
+			Protocol:     GetProtoProtocol(rule.Protocol),
+			PortInfo:     GetProtoPortInfo(rule),
+			IsDynamic:    rule.IsDynamic,
+			Domains:      rule.Domains.ToPunycodeList(),
+			PolicyID:     []byte(rule.PolicyID),
+			RouteID:      string(rule.RouteID),
+		}
+	}
+	return result
+}
+
+// ConvertToProtoCustomZone converts an nbdns.CustomZone to its proto form.
+func ConvertToProtoCustomZone(zone nbdns.CustomZone) *proto.CustomZone {
+	protoZone := &proto.CustomZone{
+		Domain:               zone.Domain,
+		Records:              make([]*proto.SimpleRecord, 0, len(zone.Records)),
+		SearchDomainDisabled: zone.SearchDomainDisabled,
+		NonAuthoritative:     zone.NonAuthoritative,
+	}
+	for _, record := range zone.Records {
+		protoZone.Records = append(protoZone.Records, &proto.SimpleRecord{
+			Name:  record.Name,
+			Type:  int64(record.Type),
+			Class: record.Class,
+			TTL:   int64(record.TTL),
+			RData: record.RData,
+		})
+	}
+	return protoZone
+}
+
+// ConvertToProtoNameServerGroup converts a NameServerGroup to its proto form.
+func ConvertToProtoNameServerGroup(nsGroup *nbdns.NameServerGroup) *proto.NameServerGroup {
+	protoGroup := &proto.NameServerGroup{
+		Primary:              nsGroup.Primary,
+		Domains:              nsGroup.Domains,
+		SearchDomainsEnabled: nsGroup.SearchDomainsEnabled,
+		NameServers:          make([]*proto.NameServer, 0, len(nsGroup.NameServers)),
+	}
+	for _, ns := range nsGroup.NameServers {
+		protoGroup.NameServers = append(protoGroup.NameServers, &proto.NameServer{
+			IP:     ns.IP.String(),
+			Port:   int64(ns.Port),
+			NSType: int64(ns.NSType),
+		})
+	}
+	return protoGroup
+}
+
+// DNSConfigCache is the cache contract for amortising NameServerGroup
+// proto-conversion across peers in the same account. Server uses a concrete
+// implementation; client passes nil (no cross-peer caching needed when
+// rebuilding a single NetworkMap from an envelope).
+type DNSConfigCache interface {
+	GetNameServerGroup(key string) (*proto.NameServerGroup, bool)
+	SetNameServerGroup(key string, value *proto.NameServerGroup)
+}
+
+// ToProtocolDNSConfig converts nbdns.Config to proto.DNSConfig. If cache is
+// non-nil, NameServerGroup proto values are cached by NSG.ID across calls —
+// the server amortises this across peers, the client passes nil.
+func ToProtocolDNSConfig(update nbdns.Config, cache DNSConfigCache, forwardPort int64) *proto.DNSConfig {
+	protoUpdate := &proto.DNSConfig{
+		ServiceEnable:    update.ServiceEnable,
+		CustomZones:      make([]*proto.CustomZone, 0, len(update.CustomZones)),
+		NameServerGroups: make([]*proto.NameServerGroup, 0, len(update.NameServerGroups)),
+		ForwarderPort:    forwardPort,
+	}
+
+	for _, zone := range update.CustomZones {
+		protoUpdate.CustomZones = append(protoUpdate.CustomZones, ConvertToProtoCustomZone(zone))
+	}
+
+	for _, nsGroup := range update.NameServerGroups {
+		if cache != nil {
+			if cachedGroup, exists := cache.GetNameServerGroup(nsGroup.ID); exists {
+				protoUpdate.NameServerGroups = append(protoUpdate.NameServerGroups, cachedGroup)
+				continue
+			}
+		}
+		protoGroup := ConvertToProtoNameServerGroup(nsGroup)
+		if cache != nil {
+			cache.SetNameServerGroup(nsGroup.ID, protoGroup)
+		}
+		protoUpdate.NameServerGroups = append(protoUpdate.NameServerGroups, protoGroup)
+	}
+
+	return protoUpdate
+}
+
+// AppendRemotePeerConfig appends typed peers as proto.RemotePeerConfig
+// entries to dst and returns the result.
+func AppendRemotePeerConfig(dst []*proto.RemotePeerConfig, peers []*nbpeer.Peer, dnsName string, includeIPv6 bool) []*proto.RemotePeerConfig {
+	for _, rPeer := range peers {
+		allowedIPs := []string{rPeer.IP.String() + "/32"}
+		if includeIPv6 && rPeer.IPv6.IsValid() {
+			allowedIPs = append(allowedIPs, rPeer.IPv6.String()+"/128")
+		}
+		dst = append(dst, &proto.RemotePeerConfig{
+			WgPubKey:     rPeer.Key,
+			AllowedIps:   allowedIPs,
+			SshConfig:    &proto.SSHConfig{SshPubKey: []byte(rPeer.SSHKey)},
+			Fqdn:         rPeer.FQDN(dnsName),
+			AgentVersion: rPeer.Meta.WtVersion,
+		})
+	}
+	return dst
+}
+
+// BuildAuthorizedUsersProto deduplicates user-IDs into a hashed list and
+// builds per-machine-user index maps. Returns (hashedUsers, machineUsers).
+// Errors from individual hash failures are logged via the provided context;
+// they leave the offending user out of the result but don't abort the build.
+func BuildAuthorizedUsersProto(ctx context.Context, authorizedUsers map[string]map[string]struct{}) ([][]byte, map[string]*proto.MachineUserIndexes) {
+	userIDToIndex := make(map[string]uint32)
+	var hashedUsers [][]byte
+	machineUsers := make(map[string]*proto.MachineUserIndexes, len(authorizedUsers))
+
+	for machineUser, users := range authorizedUsers {
+		indexes := make([]uint32, 0, len(users))
+		for userID := range users {
+			idx, exists := userIDToIndex[userID]
+			if !exists {
+				hash, err := sshauth.HashUserID(userID)
+				if err != nil {
+					log.WithContext(ctx).WithError(err).Error("failed to hash user id")
+					continue
+				}
+				idx = uint32(len(hashedUsers))
+				userIDToIndex[userID] = idx
+				hashedUsers = append(hashedUsers, hash[:])
+			}
+			indexes = append(indexes, idx)
+		}
+		machineUsers[machineUser] = &proto.MachineUserIndexes{Indexes: indexes}
+	}
+
+	return hashedUsers, machineUsers
+}

shared/management/networkmap/envelope.go

@@ -0,0 +1,210 @@
+package networkmap
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"fmt"
+
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// EnvelopeResult is what the client engine consumes after receiving a
+// component-format NetworkMap. Both fields are populated:
+//
+//   - NetworkMap is the *proto.NetworkMap shape the engine reads today via
+//     update.GetNetworkMap() — built from the envelope's components by
+//     running Calculate() locally + converting back through the shared
+//     proto helpers + merging the optional ProxyPatch.
+//   - Components is the *types.NetworkMapComponents the engine retains so
+//     future incremental delta updates (Step 3) have a base to apply
+//     changes against. The client keeps it under its sync lock.
+type EnvelopeResult struct {
+	NetworkMap *proto.NetworkMap
+	Components *types.NetworkMapComponents
+}
+
+// EnvelopeToNetworkMap is the full client-side pipeline: decode the
+// component envelope back to a typed NetworkMapComponents, run Calculate()
+// locally to produce the typed NetworkMap, convert it to the wire form the
+// engine consumes, and fold in any ProxyPatch the server attached.
+//
+// localPeerKey is the receiving peer's WG pub key (used to derive
+// includeIPv6 / useSourcePrefixes from the receiving peer's own record in
+// the components struct, mirroring legacy ToSyncResponse behaviour).
+//
+// dnsName is the account's DNS domain ("netbird.cloud" etc.); used when
+// rebuilding the per-peer FQDNs that proto.RemotePeerConfig carries.
+func EnvelopeToNetworkMap(ctx context.Context, env *proto.NetworkMapEnvelope, localPeerKey, dnsName string) (*EnvelopeResult, error) {
+	components, err := DecodeEnvelope(env)
+	if err != nil {
+		return nil, fmt.Errorf("decode envelope: %w", err)
+	}
+
+	// Find the receiving peer in the decoded components by WG key so we can
+	// derive its capabilities and set components.PeerID for Calculate(). The
+	// envelope.peers list is index-addressed; we synthesized IDs as "p<idx>".
+	localPeerID, localPeer := findPeerByWgKey(components, localPeerKey)
+	if localPeer == nil {
+		return nil, fmt.Errorf("receiving peer (wg_key prefix %q) not found among %d decoded peers — components have no PeerID, Calculate would return empty", trimKey(localPeerKey), len(components.Peers))
+	}
+	components.PeerID = localPeerID
+
+	includeIPv6 := localPeer.SupportsIPv6() && localPeer.IPv6.IsValid()
+	useSourcePrefixes := localPeer.SupportsSourcePrefixes()
+
+	typedNM := components.Calculate(ctx)
+
+	full := env.GetFull()
+	dnsFwdPort := int64(0)
+	if full != nil {
+		dnsFwdPort = full.DnsForwarderPort
+	}
+
+	protoNM := &proto.NetworkMap{
+		Serial: typedNM.Network.CurrentSerial(),
+	}
+	if full != nil {
+		protoNM.PeerConfig = full.PeerConfig
+	}
+	protoNM.Routes = ToProtocolRoutes(typedNM.Routes)
+	protoNM.DNSConfig = ToProtocolDNSConfig(typedNM.DNSConfig, nil, dnsFwdPort)
+
+	remotePeers := AppendRemotePeerConfig(nil, typedNM.Peers, dnsName, includeIPv6)
+	protoNM.RemotePeers = remotePeers
+	protoNM.RemotePeersIsEmpty = len(remotePeers) == 0
+
+	protoNM.OfflinePeers = AppendRemotePeerConfig(nil, typedNM.OfflinePeers, dnsName, includeIPv6)
+
+	firewallRules := ToProtocolFirewallRules(typedNM.FirewallRules, includeIPv6, useSourcePrefixes)
+	protoNM.FirewallRules = firewallRules
+	protoNM.FirewallRulesIsEmpty = len(firewallRules) == 0
+
+	routesFirewallRules := ToProtocolRoutesFirewallRules(typedNM.RoutesFirewallRules)
+	protoNM.RoutesFirewallRules = routesFirewallRules
+	protoNM.RoutesFirewallRulesIsEmpty = len(routesFirewallRules) == 0
+
+	if typedNM.AuthorizedUsers != nil {
+		hashedUsers, machineUsers := BuildAuthorizedUsersProto(ctx, typedNM.AuthorizedUsers)
+		userIDClaim := ""
+		if full != nil {
+			userIDClaim = full.UserIdClaim
+		}
+		protoNM.SshAuth = &proto.SSHAuth{
+			AuthorizedUsers: hashedUsers,
+			MachineUsers:    machineUsers,
+			UserIDClaim:     userIDClaim,
+		}
+	}
+
+	if typedNM.ForwardingRules != nil {
+		forwardingRules := make([]*proto.ForwardingRule, 0, len(typedNM.ForwardingRules))
+		for _, rule := range typedNM.ForwardingRules {
+			forwardingRules = append(forwardingRules, rule.ToProto())
+		}
+		protoNM.ForwardingRules = forwardingRules
+	}
+
+	// Merge the proxy patch the server attached. Mirrors the legacy
+	// NetworkMap.Merge step that the server runs after Calculate().
+	if full != nil && full.ProxyPatch != nil {
+		mergeProxyPatch(protoNM, full.ProxyPatch)
+	}
+
+	return &EnvelopeResult{
+		NetworkMap: protoNM,
+		Components: components,
+	}, nil
+}
+
+// mergeProxyPatch folds a ProxyPatch's pre-expanded fragments into the
+// proto.NetworkMap that Calculate() produced. Mirrors types.NetworkMap.Merge
+// — same six collections, deduplicated where the legacy merge dedupes.
+func mergeProxyPatch(nm *proto.NetworkMap, patch *proto.ProxyPatch) {
+	nm.RemotePeers = appendUniquePeers(nm.RemotePeers, patch.Peers)
+	nm.OfflinePeers = appendUniquePeers(nm.OfflinePeers, patch.OfflinePeers)
+	nm.FirewallRules = append(nm.FirewallRules, patch.FirewallRules...)
+	nm.Routes = append(nm.Routes, patch.Routes...)
+	nm.RoutesFirewallRules = append(nm.RoutesFirewallRules, patch.RouteFirewallRules...)
+	nm.ForwardingRules = append(nm.ForwardingRules, patch.ForwardingRules...)
+	if len(nm.RemotePeers) > 0 {
+		nm.RemotePeersIsEmpty = false
+	}
+	if len(nm.FirewallRules) > 0 {
+		nm.FirewallRulesIsEmpty = false
+	}
+	if len(nm.RoutesFirewallRules) > 0 {
+		nm.RoutesFirewallRulesIsEmpty = false
+	}
+}
+
+// appendUniquePeers dedupes by WgPubKey — mirrors legacy
+// mergeUniquePeersByID's intent (legacy keyed off Peer.ID; in proto form the
+// closest stable identifier is WgPubKey).
+func appendUniquePeers(dst, extra []*proto.RemotePeerConfig) []*proto.RemotePeerConfig {
+	if len(extra) == 0 {
+		return dst
+	}
+	seen := make(map[string]struct{}, len(dst))
+	for _, p := range dst {
+		if p == nil {
+			continue
+		}
+		seen[p.WgPubKey] = struct{}{}
+	}
+	for _, p := range extra {
+		if p == nil {
+			continue
+		}
+		if _, ok := seen[p.WgPubKey]; ok {
+			continue
+		}
+		seen[p.WgPubKey] = struct{}{}
+		dst = append(dst, p)
+	}
+	return dst
+}
+
+func trimKey(s string) string {
+	if len(s) > 12 {
+		return s[:12]
+	}
+	return s
+}
+
+// findPeerByWgKey locates the receiving peer in the decoded components by
+// matching its WireGuard public key. Compares raw 32-byte decode output —
+// not the base64 string — because production data has occasional non-canonical
+// padding bits that round-trip through the envelope's `bytes wg_pub_key`
+// field, canonicalising the encoding (semantically equivalent key, different
+// string). Decodes `wgKey` once up front and reuses a stack buffer in the
+// loop so an N-peer search is ~zero-alloc.
+func findPeerByWgKey(c *types.NetworkMapComponents, wgKey string) (string, *nbpeer.Peer) {
+	const wgKeyRawLen = 32
+	var (
+		targetRaw [wgKeyRawLen]byte
+		haveRaw   bool
+	)
+	if n, err := base64.StdEncoding.Decode(targetRaw[:], []byte(wgKey)); err == nil && n == wgKeyRawLen {
+		haveRaw = true
+	}
+	var peerRaw [wgKeyRawLen]byte
+	for id, p := range c.Peers {
+		if p == nil {
+			continue
+		}
+		if p.Key == wgKey {
+			return id, p
+		}
+		if !haveRaw {
+			continue
+		}
+		n, err := base64.StdEncoding.Decode(peerRaw[:], []byte(p.Key))
+		if err == nil && n == wgKeyRawLen && bytes.Equal(peerRaw[:], targetRaw[:]) {
+			return id, p
+		}
+	}
+	return "", nil
+}

shared/management/networkmap/envelope_test.go

@@ -0,0 +1,173 @@
+package networkmap_test
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/base64"
+	"net"
+	"net/netip"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	goproto "google.golang.org/protobuf/proto"
+
+	mgmtgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
+	nbpeer "github.com/netbirdio/netbird/management/server/peer"
+	"github.com/netbirdio/netbird/management/server/types"
+	nbnetworkmap "github.com/netbirdio/netbird/shared/management/networkmap"
+	"github.com/netbirdio/netbird/shared/management/proto"
+)
+
+// TestEnvelopeToNetworkMap_RoundTrip exercises the full client-side pipeline:
+// build a small components struct, encode an envelope, marshal/unmarshal the
+// wire bytes, decode back via EnvelopeToNetworkMap, and verify the result is
+// non-empty and consistent. Deeper per-field semantic equivalence with the
+// legacy server path is covered by the prod-DB equivalence test in
+// management/server/store/networkmap_envelope_equivalence_test.go.
+func TestEnvelopeToNetworkMap_RoundTrip(t *testing.T) {
+	c, localPeerKey := buildSmokeComponents(t)
+
+	envelope := mgmtgrpc.EncodeNetworkMapEnvelope(mgmtgrpc.ComponentsEnvelopeInput{
+		Components: c,
+		DNSDomain:  "netbird.cloud",
+	})
+
+	wire, err := goproto.Marshal(envelope)
+	require.NoError(t, err, "marshal envelope")
+
+	var decoded proto.NetworkMapEnvelope
+	require.NoError(t, goproto.Unmarshal(wire, &decoded), "unmarshal envelope")
+
+	result, err := nbnetworkmap.EnvelopeToNetworkMap(context.Background(), &decoded, localPeerKey, "netbird.cloud")
+	require.NoError(t, err, "EnvelopeToNetworkMap")
+	require.NotNil(t, result)
+	require.NotNil(t, result.NetworkMap, "decoded NetworkMap must be non-nil")
+	require.NotNil(t, result.Components, "Components must be retained for future delta updates")
+	require.NotNil(t, result.Components.AccountSettings)
+	require.NotEmpty(t, result.NetworkMap.RemotePeers, "two-peer allow policy should produce one remote peer")
+	require.NotEmpty(t, result.NetworkMap.FirewallRules, "two-peer allow policy should produce firewall rules")
+}
+
+// TestCalculate_FirewallRuleProtocol_NeverNetbirdSSH guards against the
+// scenario where a rule with Protocol=NetbirdSSH leaks the enum value into
+// proto.FirewallRule.Protocol. Calculate() must rewrite NetbirdSSH → TCP
+// before forming firewall rules (see networkmap_components.go:282 and
+// account.go:868). Without that rewrite, agents fall into UNKNOWN-protocol
+// handling, which on some platforms downgrades to allow-all — a real
+// security regression.
+func TestCalculate_FirewallRuleProtocol_NeverNetbirdSSH(t *testing.T) {
+	c, localPeerKey := buildSmokeComponents(t)
+	// Replace the smoke policy with a NetbirdSSH-protocol allow.
+	c.Policies = []*types.Policy{{
+		ID: "pol-ssh", AccountSeqID: 2, Enabled: true,
+		Rules: []*types.PolicyRule{{
+			ID:            "rule-ssh",
+			Enabled:       true,
+			Action:        types.PolicyTrafficActionAccept,
+			Protocol:      types.PolicyRuleProtocolNetbirdSSH,
+			Bidirectional: true,
+			Sources:       []string{"group-all"},
+			Destinations:  []string{"group-all"},
+		}},
+	}}
+
+	envelope := mgmtgrpc.EncodeNetworkMapEnvelope(mgmtgrpc.ComponentsEnvelopeInput{
+		Components: c,
+		DNSDomain:  "netbird.cloud",
+	})
+	wire, err := goproto.Marshal(envelope)
+	require.NoError(t, err)
+	var decoded proto.NetworkMapEnvelope
+	require.NoError(t, goproto.Unmarshal(wire, &decoded))
+
+	result, err := nbnetworkmap.EnvelopeToNetworkMap(context.Background(), &decoded, localPeerKey, "netbird.cloud")
+	require.NoError(t, err)
+	require.NotEmpty(t, result.NetworkMap.FirewallRules, "ssh policy should produce firewall rules")
+	for i, fr := range result.NetworkMap.FirewallRules {
+		require.NotEqualf(t, proto.RuleProtocol_NETBIRD_SSH, fr.Protocol,
+			"FirewallRules[%d].Protocol must be the rewritten TCP, not NETBIRD_SSH", i)
+	}
+}
+
+func TestEnvelopeToNetworkMap_NilEnvelope(t *testing.T) {
+	_, err := nbnetworkmap.EnvelopeToNetworkMap(context.Background(), nil, "key", "netbird.cloud")
+	require.Error(t, err, "nil envelope must produce an error rather than panic")
+}
+
+func TestEnvelopeToNetworkMap_FullPayloadMissing(t *testing.T) {
+	env := &proto.NetworkMapEnvelope{}
+	_, err := nbnetworkmap.EnvelopeToNetworkMap(context.Background(), env, "key", "netbird.cloud")
+	require.Error(t, err, "envelope with no Full payload must produce an error")
+}
+
+// buildSmokeComponents returns a minimal NetworkMapComponents (2 peers, 1
+// group, 1 allow policy) plus the receiving peer's WG public key. Sufficient
+// to validate the encode → marshal → decode → Calculate pipeline produces
+// non-empty output.
+func buildSmokeComponents(t *testing.T) (*types.NetworkMapComponents, string) {
+	t.Helper()
+
+	peerAKey := randomWgKey(t)
+	peerBKey := randomWgKey(t)
+
+	peerA := &nbpeer.Peer{
+		ID:       "peer-A",
+		Key:      peerAKey,
+		IP:       netip.AddrFrom4([4]byte{100, 64, 0, 1}),
+		DNSLabel: "peerA",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+	peerB := &nbpeer.Peer{
+		ID:       "peer-B",
+		Key:      peerBKey,
+		IP:       netip.AddrFrom4([4]byte{100, 64, 0, 2}),
+		DNSLabel: "peerB",
+		Meta:     nbpeer.PeerSystemMeta{WtVersion: "0.40.0"},
+	}
+
+	group := &types.Group{
+		ID: "group-all", AccountSeqID: 1, Name: "All",
+		Peers: []string{"peer-A", "peer-B"},
+	}
+
+	policy := &types.Policy{
+		ID: "pol-allow", AccountSeqID: 1, Enabled: true,
+		Rules: []*types.PolicyRule{{
+			ID:            "rule-allow",
+			Enabled:       true,
+			Action:        types.PolicyTrafficActionAccept,
+			Protocol:      types.PolicyRuleProtocolALL,
+			Bidirectional: true,
+			Sources:       []string{"group-all"},
+			Destinations:  []string{"group-all"},
+		}},
+	}
+
+	c := &types.NetworkMapComponents{
+		PeerID: "peer-A",
+		Network: &types.Network{
+			Identifier: "net-smoke",
+			Net:        net.IPNet{IP: net.IP{100, 64, 0, 0}, Mask: net.CIDRMask(10, 32)},
+			Serial:     1,
+		},
+		AccountSettings: &types.AccountSettingsInfo{},
+		DNSSettings:     &types.DNSSettings{},
+		Peers: map[string]*nbpeer.Peer{
+			"peer-A": peerA,
+			"peer-B": peerB,
+		},
+		Groups: map[string]*types.Group{
+			"group-all": group,
+		},
+		Policies: []*types.Policy{policy},
+	}
+	return c, peerAKey
+}
+
+func randomWgKey(t *testing.T) string {
+	t.Helper()
+	var raw [32]byte
+	_, err := rand.Read(raw[:])
+	require.NoError(t, err)
+	return base64.StdEncoding.EncodeToString(raw[:])
+}

shared/management/proto/management.proto

@@ -133,6 +133,12 @@ message SyncResponse {
 
   // Posture checks to be evaluated by client
   repeated Checks Checks = 6;
+
+  // NetworkMapEnvelope carries the component-based wire format for peers that
+  // advertise PeerCapabilityComponentNetworkMap. When set, NetworkMap (field 5)
+  // is left empty: management ships components and the client runs Calculate()
+  // locally instead of receiving an expanded NetworkMap.
+  NetworkMapEnvelope NetworkMapEnvelope = 7;
 }
 
 message  SyncMetaRequest {
@@ -212,6 +218,8 @@ enum PeerCapability {
   PeerCapabilitySourcePrefixes = 1;
   // Client handles IPv6 overlay addresses and firewall rules.
   PeerCapabilityIPv6Overlay = 2;
+  // Client receives NetworkMap as components and assembles it locally.
+  PeerCapabilityComponentNetworkMap = 3;
 }
 
 // PeerSystemMeta is machine meta data like OS and version.
@@ -569,6 +577,13 @@ enum RuleProtocol {
   UDP = 3;
   ICMP = 4;
   CUSTOM = 5;
+  // NETBIRD_SSH (types.PolicyRuleProtocolType "netbird-ssh") is the marker
+  // policy rule that drives SSH-server activation in Calculate(). The legacy
+  // proto.FirewallRule path doesn't ship this value (Calculate already
+  // expands SSH rules into TCP/22 before encoding), but the components path
+  // ships RAW policies — the client must see this protocol to derive
+  // AuthorizedUsers locally.
+  NETBIRD_SSH = 6;
 }
 
 enum RuleDirection {
@@ -709,3 +724,462 @@ message StopExposeRequest {
 }
 
 message StopExposeResponse {}
+
+// =====================================================================
+// Component-based NetworkMap wire format (PeerCapabilityComponentNetworkMap).
+//
+// Peers that advertise this capability receive NetworkMap building blocks
+// (peers + groups + policies + routes + dns + ssh + forwarding) and run the
+// expansion (Calculate) locally instead of receiving a fully-expanded
+// NetworkMap from the server.
+// =====================================================================
+
+// NetworkMapEnvelope wraps either a full snapshot or a delta. Step 2 ships
+// only Full; Delta is reserved for the incremental-update work.
+message NetworkMapEnvelope {
+  oneof payload {
+    NetworkMapComponentsFull full = 1;
+    NetworkMapComponentsDelta delta = 2;
+  }
+}
+
+// NetworkMapComponentsFull is the full per-peer component snapshot. The
+// client decodes it into a types.NetworkMapComponents and runs Calculate()
+// locally to produce the same NetworkMap the legacy server path would have
+// produced. Every field carries RAW component data — no server-side
+// expansion (firewall rules, DNS config, SSH auth, route firewall rules,
+// forwarding rules) is shipped; the client computes those itself.
+message NetworkMapComponentsFull {
+  uint64 serial = 1;
+
+  // Peer config for the receiving peer (legacy proto.PeerConfig kept as-is —
+  // it carries the receiving peer's own overlay address, FQDN, SSH config).
+  PeerConfig peer_config = 2;
+
+  // Account-level network metadata (id, IPv4/IPv6 overlay subnets, DNS,
+  // serial). Mirrors types.Network.
+  AccountNetwork network = 3;
+
+  // Account-level settings the client needs for its local Calculate().
+  AccountSettingsCompact account_settings = 4;
+
+  // Account DNS settings (mirrors types.DNSSettings).
+  DNSSettingsCompact dns_settings = 5;
+
+  // Domain shared across all peers in this account, e.g. "netbird.cloud".
+  // Each peer's FQDN is dns_label + "." + dns_domain.
+  string dns_domain = 6;
+
+  // Custom-zone domain for this peer's view (c.CustomZoneDomain). Empty when
+  // the peer has no custom zone records.
+  string custom_zone_domain = 7;
+
+  // Deduplicated agent versions; PeerCompact.agent_version_idx indexes here.
+  // Empty string at index 0 if any peer has no version.
+  repeated string agent_versions = 8;
+
+  // All peers (deduplicated). The client splits peers into online / offline
+  // locally using account_settings.peer_login_expiration on receive.
+  repeated PeerCompact peers = 9;
+
+  // Indexes into peers for the subset that may act as routers.
+  repeated uint32 router_peer_indexes = 10;
+
+  // Policies that affect the receiving peer.
+  repeated PolicyCompact policies = 11;
+
+  // Groups in unspecified order — clients key off id (account_seq_id).
+  repeated GroupCompact groups = 12;
+
+  // Routes relevant to this peer, raw shape (mirrors []*route.Route).
+  repeated RouteRaw routes = 13;
+
+  // Nameserver groups (mirrors []*nbdns.NameServerGroup).
+  repeated NameServerGroupRaw nameserver_groups = 14;
+
+  // All DNS records the client needs to assemble its custom zone. Reuses
+  // the existing SimpleRecord wire shape.
+  repeated SimpleRecord all_dns_records = 15;
+
+  // Custom zones (typically the peer's own zone). Reuses the existing
+  // CustomZone wire shape.
+  repeated CustomZone account_zones = 16;
+
+  // Network resources (mirrors []*resourceTypes.NetworkResource).
+  repeated NetworkResourceRaw network_resources = 17;
+
+  // Routers per network. Outer key: network account_seq_id. Each entry is
+  // the set of routers backing that network for this peer's view.
+  //
+  // INCOMPATIBLE WIRE CHANGE: the map key changed from string (network xid)
+  // to uint32 (account_seq_id). Field 18 was reused without a `reserved`
+  // entry because capability=3 has never been released — every cap=3
+  // producer and consumer carries the same regenerated descriptor. Do NOT
+  // reuse this pattern for any further wire change once cap=3 ships.
+  map<uint32, NetworkRouterList> routers_map = 18;
+
+  // For each NetworkResource account_seq_id, the indexes into policies[]
+  // that apply to it.
+  //
+  // INCOMPATIBLE WIRE CHANGE: see routers_map note above.
+  map<uint32, PolicyIndexes> resource_policies_map = 19;
+
+  // Group-id (account_seq_id) → user ids authorized for SSH on members.
+  map<uint32, UserIDList> group_id_to_user_ids = 20;
+
+  // Account-level allowed user ids (used by Calculate() when assembling SSH
+  // authorized users for the receiving peer).
+  repeated string allowed_user_ids = 21;
+
+  // Per posture-check account_seq_id, the set of peer indexes that failed
+  // the check. Server-side evaluation result; clients do not re-evaluate.
+  //
+  // INCOMPATIBLE WIRE CHANGE: see routers_map note above.
+  map<uint32, PeerIndexSet> posture_failed_peers = 22;
+
+  // Account-level DNS forwarder port (mirrors the legacy
+  // proto.DNSConfig.ForwarderPort). Computed by the controller from peer
+  // versions; clients fold it into their Calculate() DNS output.
+  int64 dns_forwarder_port = 23;
+
+  // Pre-expanded NetworkMap fragments injected post-Calculate by external
+  // controllers (BYOP / port-forwarding proxies). The receiving client
+  // merges these into its locally-computed NetworkMap the same way the
+  // legacy server does via NetworkMap.Merge — so downstream consumers see
+  // a unified merged result regardless of source.
+  ProxyPatch proxy_patch = 24;
+
+  // SSH UserIDClaim — server-side HttpServerConfig.AuthUserIDClaim, or
+  // "sub" by default. Populated in proto.SSHAuth.UserIDClaim when the
+  // client rebuilds the NetworkMap from this envelope. Empty when the
+  // account has no AuthorizedUsers (and thus no SshAuth to populate).
+  string user_id_claim = 25;
+
+  // Reserved for future component additions (incremental_serial, parent_seq,
+  // etc.) without forcing a renumber.
+  reserved 26 to 50;
+}
+
+// ProxyPatch carries NetworkMap fragments that don't fit the component-graph
+// model — they're pre-expanded by external controllers (BYOP /
+// port-forwarding proxies) and injected post-Calculate. Fields use the
+// legacy wire types because the proxy delivers them pre-formed; there is
+// no raw component shape to convert from. Empty when no proxy is active.
+message ProxyPatch {
+  repeated RemotePeerConfig peers = 1;
+  repeated RemotePeerConfig offline_peers = 2;
+  repeated FirewallRule firewall_rules = 3;
+  repeated Route routes = 4;
+  repeated RouteFirewallRule route_firewall_rules = 5;
+  repeated ForwardingRule forwarding_rules = 6;
+}
+
+// AccountSettingsCompact carries the account-level settings the client needs
+// to evaluate locally. Mirrors the subset of types.AccountSettingsInfo that
+// Calculate() actually reads — login-expiration (used to filter expired
+// peers). Inactivity expiration is purely server-side bookkeeping and is not
+// shipped.
+message AccountSettingsCompact {
+  bool peer_login_expiration_enabled = 1;
+  // Login expiration window. Unit is nanoseconds (matches time.Duration).
+  int64 peer_login_expiration_ns = 2;
+}
+
+// AccountNetwork is the account-level overlay metadata. Mirrors types.Network
+// so the client can populate NetworkMap.Network without a server round-trip.
+message AccountNetwork {
+  string identifier = 1;
+  // IPv4 overlay subnet in CIDR form (e.g. "100.64.0.0/16").
+  string net_cidr = 2;
+  // IPv6 ULA overlay subnet in CIDR form (e.g. "fd00:4e42::/64"). Empty when
+  // the account has no IPv6 overlay yet.
+  string net_v6_cidr = 3;
+  string dns = 4;
+  uint64 serial = 5;
+}
+
+// NetworkMapComponentsDelta is reserved for the incremental update protocol
+// (Step 3 of the migration plan). Field numbers 1–100 are pre-allocated to
+// keep room for the planned event types without needing a renumber.
+message NetworkMapComponentsDelta {
+  reserved 1 to 100;
+}
+
+// PeerCompact is the wire-shape of a remote peer used by the component
+// format. It carries every field of types.Peer that the client's local
+// Calculate() reads — including the trio needed to evaluate
+// LoginExpired() (added_with_sso_login + login_expiration_enabled +
+// last_login_unix_nano). Fields the client does not consume (Status,
+// CreatedAt, etc.) are not shipped.
+message PeerCompact {
+  // Raw 32-byte WireGuard public key (no base64 wrapping).
+  bytes wg_pub_key = 1;
+
+  // Raw 4-byte IPv4 overlay address. Always a /32 host route, so no prefix
+  // byte is needed.
+  bytes ip = 2;
+
+  // Raw 16-byte IPv6 overlay address; always a /128 host route. Empty when
+  // the peer has no IPv6 overlay address.
+  bytes ipv6 = 3;
+
+  // Raw SSH public key bytes (or empty).
+  bytes ssh_pub_key = 4;
+
+  // DNS label without the account's domain suffix. Full FQDN is
+  // dns_label + "." + NetworkMapComponentsFull.dns_domain.
+  string dns_label = 5;
+
+  // Index into NetworkMapComponentsFull.agent_versions.
+  uint32 agent_version_idx = 6;
+
+  // True iff the peer was added via SSO login (i.e., types.Peer.UserID is
+  // non-empty). Combined with login_expiration_enabled and
+  // last_login_unix_nano this lets the client reproduce
+  // (*Peer).LoginExpired() locally.
+  bool added_with_sso_login = 7;
+
+  // True when the peer's login can expire — mirrors
+  // types.Peer.LoginExpirationEnabled.
+  bool login_expiration_enabled = 8;
+
+  // Unix-nanosecond timestamp of the peer's last login. 0 when the peer has
+  // never logged in (server stores nil; client treats 0 as "epoch", which
+  // makes a fresh peer immediately expired iff login_expiration_enabled is
+  // true — the same semantics as types.Peer.GetLastLogin).
+  int64 last_login_unix_nano = 9;
+
+  // True when the peer has an SSH server enabled locally. Used by the
+  // legacy SSH path in Calculate() (`policyRuleImpliesLegacySSH`): a rule
+  // with protocol ALL/TCP-with-SSH-ports activates SSH for the receiving
+  // peer when this bit is set, even without an explicit NetbirdSSH rule.
+  bool ssh_enabled = 10;
+
+  reserved 11; // was: id (string xid)
+
+  // Mirror of types.Peer.SupportsIPv6() — !Meta.Flags.DisableIPv6 &&
+  // HasCapability(PeerCapabilityIPv6Overlay). Used by the local peer's
+  // Calculate() when deciding whether to emit IPv6 firewall rules
+  // (appendIPv6FirewallRule) against this peer's IPv6 address.
+  bool supports_ipv6 = 12;
+
+  // Mirror of types.Peer.SupportsSourcePrefixes() —
+  // HasCapability(PeerCapabilitySourcePrefixes). Determines whether the
+  // local peer's Calculate() emits SourcePrefixes alongside legacy PeerIP
+  // fields in proto.FirewallRule.
+  bool supports_source_prefixes = 13;
+
+  // Mirror of types.Peer.Meta.Flags.ServerSSHAllowed. Read by Calculate()
+  // when expanding TCP port-22 firewall rules — the native SSH companion
+  // (port 22022) is only added when this flag is set and the peer agent
+  // version supports it.
+  bool server_ssh_allowed = 14;
+}
+
+// PolicyCompact is the compact form of a policy rule. Group references use
+// the per-account integer ids from account_seq_counters; the client resolves
+// them against NetworkMapComponentsFull.groups. Direction is derived per-peer
+// on the client (ingress when the peer is in destination_group_ids, egress
+// when in source_group_ids; both when bidirectional).
+message PolicyCompact {
+  // Per-account integer id (matches policies.account_seq_id). Used as a
+  // stable reference for ResourcePoliciesMap.indexes and future delta
+  // updates (Step 3).
+  uint32 id = 1;
+
+  RuleAction action = 2;
+  RuleProtocol protocol = 3;
+  bool bidirectional = 4;
+
+  // Single ports referenced by the rule.
+  repeated uint32 ports = 5;
+
+  // Port ranges (start..end) referenced by the rule.
+  repeated PortInfo.Range port_ranges = 6;
+
+  // Group ids (account_seq_id) of source / destination groups.
+  repeated uint32 source_group_ids = 7;
+  repeated uint32 destination_group_ids = 8;
+
+  reserved 9; // was: xid (string)
+
+  // SSH authorization fields. PolicyRule.AuthorizedGroups maps the rule's
+  // applicable group ids (account_seq_id) to a list of local-user names —
+  // when a peer in one of those groups is the SSH destination, the named
+  // local users gain access. AuthorizedUser is the single-user form
+  // (legacy: rule scopes SSH to one specific user id).
+  //
+  // Both fields are only consumed by Calculate() when the rule's protocol
+  // is NetbirdSSH (or the legacy implicit-SSH heuristic).
+  map<uint32, UserNameList> authorized_groups = 10;
+  string authorized_user = 11;
+
+  // Resource-typed rule sources/destinations. When a rule targets a specific
+  // peer (rather than groups), Calculate() reads SourceResource /
+  // DestinationResource — without these the rule's connection resources
+  // can't be produced on the client. ResourceCompact's peer_index refers to
+  // NetworkMapComponentsFull.peers; type is the raw ResourceType string
+  // ("peer", "host", "subnet", "domain"). Only "peer" is meaningful for
+  // Calculate's resource-typed rule path today.
+  ResourceCompact source_resource = 12;
+  ResourceCompact destination_resource = 13;
+
+  // Posture-check seq ids gating this policy's source peers. Calculate()
+  // reads them when filtering rule peers (peers that fail any listed check
+  // are dropped from sourcePeers). Match keys in
+  // NetworkMapComponentsFull.posture_failed_peers.
+  repeated uint32 source_posture_check_seq_ids = 15;
+
+  reserved 14; // was: source_posture_check_ids (repeated string xid)
+}
+
+// ResourceCompact mirrors types.Resource. Used by PolicyCompact to carry
+// rule.SourceResource / rule.DestinationResource when the rule targets a
+// specific resource (typically a peer) rather than groups.
+// peer_index_set tells whether peer_index is valid (proto3 uint32 cannot
+// disambiguate "0" from "unset"); set only when type == "peer".
+message ResourceCompact {
+  string type = 1;
+  bool peer_index_set = 2;
+  uint32 peer_index = 3;
+  reserved 4; // future: host/subnet/domain references when needed
+}
+
+// UserNameList is a list of local-user names — used as the value type in
+// PolicyCompact.authorized_groups.
+message UserNameList {
+  repeated string names = 1;
+}
+
+// GroupCompact is the wire-shape of a group: per-account integer id, optional
+// name, and indexes into NetworkMapComponentsFull.peers identifying members.
+message GroupCompact {
+  // Per-account integer id (matches groups.account_seq_id). Used by
+  // PolicyCompact.source_group_ids / destination_group_ids.
+  uint32 id = 1;
+
+  // Group name; only sent when non-empty (clients use it for diagnostics).
+  string name = 2;
+
+  // Indexes into NetworkMapComponentsFull.peers.
+  repeated uint32 peer_indexes = 3;
+}
+
+// DNSSettingsCompact mirrors types.DNSSettings.
+message DNSSettingsCompact {
+  // Group ids (account_seq_id) whose DNS management is disabled.
+  repeated uint32 disabled_management_group_ids = 1;
+}
+
+// RouteRaw mirrors *route.Route (the domain type), trimmed to fields that
+// types.NetworkMapComponents.Calculate() reads. Group references are
+// account_seq_ids; the routing peer (when set) is referenced by index into
+// NetworkMapComponentsFull.peers.
+message RouteRaw {
+  // Per-account integer id (matches routes.account_seq_id).
+  uint32 id = 1;
+  string net_id = 2;
+  string description = 3;
+
+  // Either network_cidr (e.g. "10.0.0.0/16") or domains is set, not both.
+  string network_cidr = 4;
+  repeated string domains = 5;
+  bool keep_route = 6;
+
+  // Routing peer reference: peer_index_set tells whether peer_index is valid
+  // (proto3 uint32 cannot disambiguate "0" from "unset"). Mutually exclusive
+  // with peer_group_ids.
+  //
+  // peer_index decodes back to types.Peer.ID (the peer's xid string), NOT
+  // to its WireGuard public key. This matches the server-side data flow:
+  // c.Routes carry route.Peer = peer.ID, and getRoutingPeerRoutes mutates
+  // it to peer.Key only after the route has been admitted to the network
+  // map. Decoders MUST set Route.Peer = peer.ID; the legacy Calculate()
+  // path will substitute the WG key downstream.
+  bool peer_index_set = 7;
+  uint32 peer_index = 8;
+  repeated uint32 peer_group_ids = 9;
+
+  int32 network_type = 10;
+  bool masquerade = 11;
+  int32 metric = 12;
+  bool enabled = 13;
+  repeated uint32 group_ids = 14;
+  repeated uint32 access_control_group_ids = 15;
+  bool skip_auto_apply = 16;
+
+  reserved 17; // was: xid (string)
+}
+
+// NameServerGroupRaw mirrors *nbdns.NameServerGroup. Distinct from the
+// legacy NameServerGroup (which is the wire-trimmed shape consumed by
+// proto.DNSConfig and lacks the Name/Description/Groups/Enabled fields).
+message NameServerGroupRaw {
+  uint32 id = 1;            // nameserver_groups.account_seq_id
+  string name = 2;
+  string description = 3;
+  // Reuses the legacy NameServer wire shape (IP as string).
+  repeated NameServer nameservers = 4;
+  // Group ids (account_seq_id) the NSG distributes nameservers to.
+  repeated uint32 group_ids = 5;
+  bool primary = 6;
+  repeated string domains = 7;
+  bool enabled = 8;
+  bool search_domains_enabled = 9;
+}
+
+// NetworkResourceRaw mirrors *resourceTypes.NetworkResource.
+//
+// INCOMPATIBLE WIRE CHANGE: field 2 changed from `string network_id` (xid)
+// to `uint32 network_seq` without a `reserved` entry. Safe only because
+// capability=3 has never been released — every cap=3 producer and consumer
+// carries the same regenerated descriptor. Do NOT reuse this pattern once
+// cap=3 ships.
+message NetworkResourceRaw {
+  uint32 id = 1;            // network_resources.account_seq_id
+  uint32 network_seq = 2;   // networks.account_seq_id (replaces xid)
+  string name = 3;
+  string description = 4;
+  // Resource type: "host" / "subnet" / "domain".
+  string type = 5;
+  string address = 6;
+  string domain_value = 7;  // resource.Domain
+  string prefix_cidr = 8;
+  bool enabled = 9;
+  reserved 10; // was: xid (string)
+}
+
+// NetworkRouterList carries the routers backing one network.
+message NetworkRouterList {
+  // Routers in this network, keyed by peer_index (the routing peer).
+  repeated NetworkRouterEntry entries = 1;
+}
+
+// NetworkRouterEntry mirrors a single *routerTypes.NetworkRouter; the routing
+// peer is referenced by index into NetworkMapComponentsFull.peers.
+message NetworkRouterEntry {
+  uint32 id = 1;            // network_routers.account_seq_id
+  uint32 peer_index = 2;
+  bool peer_index_set = 3;
+  repeated uint32 peer_group_ids = 4;
+  bool masquerade = 5;
+  int32 metric = 6;
+  bool enabled = 7;
+}
+
+// PolicyIndexes is a list of indexes into NetworkMapComponentsFull.policies.
+message PolicyIndexes {
+  repeated uint32 indexes = 1;
+}
+
+// UserIDList is a list of user ids — used as the value type in
+// NetworkMapComponentsFull.group_id_to_user_ids.
+message UserIDList {
+  repeated string user_ids = 1;
+}
+
+// PeerIndexSet is a set of peer indexes — used as the value type in
+// NetworkMapComponentsFull.posture_failed_peers.
+message PeerIndexSet {
+  repeated uint32 peer_indexes = 1;
+}