management OIDC implementation using pkce

2026-04-16 07:16:38 +00:00 · 2026-02-04 10:11:15 +00:00
parent 0dd0c67b3b
commit 562923c600
18 changed files with 704 additions and 331 deletions
--- a/management/internals/modules/reverseproxy/manager/manager.go
+++ b/management/internals/modules/reverseproxy/manager/manager.go
@@ -145,7 +145,7 @@ func (m *managerImpl) CreateReverseProxy(ctx context.Context, accountID, userID
 		return nil, fmt.Errorf("failed to create setup key for reverse proxy: %w", err)
 	}

-	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Create, key.Key))
+	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Create, key.Key, m.proxyGRPCServer.GetOIDCValidationConfig()))

 	return reverseProxy, nil
 }
@@ -191,7 +191,7 @@ func (m *managerImpl) UpdateReverseProxy(ctx context.Context, accountID, userID

 	m.accountManager.StoreEvent(ctx, userID, reverseProxy.ID, accountID, activity.ReverseProxyUpdated, reverseProxy.EventMeta())

-	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Update, ""))
+	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Update, "", m.proxyGRPCServer.GetOIDCValidationConfig()))

 	return reverseProxy, nil
 }
@@ -225,7 +225,7 @@ func (m *managerImpl) DeleteReverseProxy(ctx context.Context, accountID, userID,

 	m.accountManager.StoreEvent(ctx, userID, reverseProxyID, accountID, activity.ReverseProxyDeleted, reverseProxy.EventMeta())

-	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Delete, ""))
+	m.proxyGRPCServer.SendReverseProxyUpdate(reverseProxy.ToProtoMapping(reverseproxy.Delete, "", m.proxyGRPCServer.GetOIDCValidationConfig()))

 	return nil
 }
--- a/management/internals/modules/reverseproxy/reverseproxy.go
+++ b/management/internals/modules/reverseproxy/reverseproxy.go
@@ -57,6 +57,13 @@ type AuthConfig struct {
 	LinkAuth     *LinkAuthConfig     `json:"link_auth,omitempty" gorm:"serializer:json"`
 }

+type OIDCValidationConfig struct {
+	Issuer             string
+	Audiences          []string
+	KeysLocation       string
+	MaxTokenAgeSeconds int64
+}
+
 type ReverseProxy struct {
 	ID        string `gorm:"primaryKey"`
 	AccountID string `gorm:"index"`
@@ -132,7 +139,7 @@ func (r *ReverseProxy) ToAPIResponse() *api.ReverseProxy {
 	}
 }

-func (r *ReverseProxy) ToProtoMapping(operation Operation, setupKey string) *proto.ProxyMapping {
+func (r *ReverseProxy) ToProtoMapping(operation Operation, setupKey string, oidcConfig OIDCValidationConfig) *proto.ProxyMapping {
 	pathMappings := make([]*proto.PathMapping, 0, len(r.Targets))
 	for _, target := range r.Targets {
 		if !target.Enabled {
@@ -171,7 +178,10 @@ func (r *ReverseProxy) ToProtoMapping(operation Operation, setupKey string) *pro

 	if r.Auth.BearerAuth != nil && r.Auth.BearerAuth.Enabled {
 		auth.Oidc = &proto.OIDC{
-			DistributionGroups: r.Auth.BearerAuth.DistributionGroups,
+			Issuer:       oidcConfig.Issuer,
+			Audiences:    oidcConfig.Audiences,
+			KeysLocation: oidcConfig.KeysLocation,
+			MaxTokenAge:  oidcConfig.MaxTokenAgeSeconds,
 		}
 	}

--- a/management/internals/server/boot.go
+++ b/management/internals/server/boot.go
@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"net/netip"
 	"slices"
+	"strings"
 	"time"

 	grpcMiddleware "github.com/grpc-ecosystem/go-grpc-middleware/v2"
@@ -94,7 +95,7 @@ func (s *BaseServer) EventStore() activity.Store {

 func (s *BaseServer) APIHandler() http.Handler {
 	return Create(s, func() http.Handler {
-		httpAPIHandler, err := nbhttp.NewAPIHandler(context.Background(), s.AccountManager(), s.NetworksManager(), s.ResourcesManager(), s.RoutesManager(), s.GroupsManager(), s.GeoLocationManager(), s.AuthManager(), s.Metrics(), s.IntegratedValidator(), s.ProxyController(), s.PermissionsManager(), s.PeersManager(), s.SettingsManager(), s.ZonesManager(), s.RecordsManager(), s.NetworkMapController(), s.IdpManager(), s.ReverseProxyManager(), s.ReverseProxyDomainManager(), s.AccessLogsManager())
+		httpAPIHandler, err := nbhttp.NewAPIHandler(context.Background(), s.AccountManager(), s.NetworksManager(), s.ResourcesManager(), s.RoutesManager(), s.GroupsManager(), s.GeoLocationManager(), s.AuthManager(), s.Metrics(), s.IntegratedValidator(), s.ProxyController(), s.PermissionsManager(), s.PeersManager(), s.SettingsManager(), s.ZonesManager(), s.RecordsManager(), s.NetworkMapController(), s.IdpManager(), s.ReverseProxyManager(), s.ReverseProxyDomainManager(), s.AccessLogsManager(), s.ReverseProxyGRPCServer())
 		if err != nil {
 			log.Fatalf("failed to create API handler: %v", err)
 		}
@@ -161,11 +162,32 @@ func (s *BaseServer) GRPCServer() *grpc.Server {

 func (s *BaseServer) ReverseProxyGRPCServer() *nbgrpc.ProxyServiceServer {
 	return Create(s, func() *nbgrpc.ProxyServiceServer {
-		proxyService := nbgrpc.NewProxyServiceServer(s.Store(), s.AccountManager(), s.AccessLogsManager())
+		proxyService := nbgrpc.NewProxyServiceServer(s.Store(), s.AccountManager(), s.AccessLogsManager(), s.proxyOIDCConfig())
 		return proxyService
 	})
 }

+func (s *BaseServer) proxyOIDCConfig() nbgrpc.ProxyOIDCConfig {
+	return Create(s, func() nbgrpc.ProxyOIDCConfig {
+		// TODO: this is weird, double check
+		// Build callback URL - this should be the management server's callback endpoint
+		// For embedded IdP, derive from issuer. For external, use a configured value or derive from issuer.
+		// The callback URL should be registered in the IdP's allowed redirect URIs for the dashboard client.
+		callbackURL := strings.TrimSuffix(s.Config.HttpConfig.AuthIssuer, "/oauth2")
+		callbackURL = callbackURL + "/api/oauth/callback"
+
+		return nbgrpc.ProxyOIDCConfig{
+			Issuer:       s.Config.HttpConfig.AuthIssuer,
+			ClientID:     "netbird-dashboard", // Reuse dashboard client
+			Scopes:       []string{"openid", "profile", "email"},
+			CallbackURL:  callbackURL,
+			HMACKey:      []byte(s.Config.DataStoreEncryptionKey), // Use the datastore encryption key for OIDC state HMACs, this should ensure all management instances are using the same key.
+			Audience:     s.Config.HttpConfig.AuthAudience,
+			KeysLocation: s.Config.HttpConfig.AuthKeysLocation,
+		}
+	})
+}
+
 func (s *BaseServer) AccessLogsManager() accesslogs.Manager {
 	return Create(s, func() accesslogs.Manager {
 		accessLogManager := accesslogsmanager.NewManager(s.Store(), s.PermissionsManager(), s.GeoLocationManager())
--- a/management/internals/shared/grpc/proxy.go
+++ b/management/internals/shared/grpc/proxy.go
@@ -2,25 +2,43 @@ package grpc

 import (
 	"context"
+	"crypto/hmac"
+	"crypto/sha256"
 	"crypto/subtle"
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
 	"fmt"
+	"strings"
 	"sync"
 	"time"

+	"github.com/coreos/go-oidc/v3/oidc"
 	log "github.com/sirupsen/logrus"
+	"golang.org/x/oauth2"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/peer"
 	"google.golang.org/grpc/status"

-	"github.com/netbirdio/netbird/management/server/activity"
-
 	"github.com/netbirdio/netbird/management/internals/modules/reverseproxy"
 	"github.com/netbirdio/netbird/management/internals/modules/reverseproxy/accesslogs"
+	"github.com/netbirdio/netbird/management/server/activity"
 	"github.com/netbirdio/netbird/management/server/store"
 	"github.com/netbirdio/netbird/management/server/types"
 	"github.com/netbirdio/netbird/shared/management/proto"
 )

+type ProxyOIDCConfig struct {
+	Issuer      string
+	ClientID    string
+	Scopes      []string
+	CallbackURL string
+	HMACKey     []byte
+
+	Audience     string
+	KeysLocation string
+}
+
 type reverseProxyStore interface {
 	GetReverseProxies(ctx context.Context, lockStrength store.LockingStrength) ([]*reverseproxy.ReverseProxy, error)
 	GetAccountReverseProxies(ctx context.Context, lockStrength store.LockingStrength, accountID string) ([]*reverseproxy.ReverseProxy, error)
@@ -50,6 +68,12 @@ type ProxyServiceServer struct {

 	// Manager for access logs
 	accessLogManager accesslogs.Manager
+
+	// OIDC configuration for proxy authentication
+	oidcConfig ProxyOIDCConfig
+
+	// TODO: use database to store these instead?
+	pkceVerifiers sync.Map
 }

 // proxyConnection represents a connected proxy
@@ -64,12 +88,13 @@ type proxyConnection struct {
 }

 // NewProxyServiceServer creates a new proxy service server
-func NewProxyServiceServer(store reverseProxyStore, keys keyStore, accessLogMgr accesslogs.Manager) *ProxyServiceServer {
+func NewProxyServiceServer(store reverseProxyStore, keys keyStore, accessLogMgr accesslogs.Manager, oidcConfig ProxyOIDCConfig) *ProxyServiceServer {
 	return &ProxyServiceServer{
 		updatesChan:       make(chan *proto.ProxyMapping, 100),
 		reverseProxyStore: store,
 		keyStore:          keys,
 		accessLogManager:  accessLogMgr,
+		oidcConfig:        oidcConfig,
 	}
 }

@@ -174,6 +199,7 @@ func (s *ProxyServiceServer) sendSnapshot(ctx context.Context, conn *proxyConnec
 				rp.ToProtoMapping(
 					reverseproxy.Create, // Initial snapshot, all records are "new" for the proxy.
 					key.Key,
+					s.GetOIDCValidationConfig(),
 				),
 			},
 		}); err != nil {
@@ -301,3 +327,91 @@ func (s *ProxyServiceServer) Authenticate(ctx context.Context, req *proto.Authen
 		Success: authenticated,
 	}, nil
 }
+
+func (s *ProxyServiceServer) GetOIDCURL(ctx context.Context, req *proto.GetOIDCURLRequest) (*proto.GetOIDCURLResponse, error) {
+	provider, err := oidc.NewProvider(ctx, s.oidcConfig.Issuer)
+	if err != nil {
+		// TODO: log
+		return nil, status.Errorf(codes.FailedPrecondition, "failed to create OIDC provider: %v", err)
+	}
+
+	scopes := s.oidcConfig.Scopes
+	if len(scopes) == 0 {
+		scopes = []string{oidc.ScopeOpenID, "profile", "email"}
+	}
+
+	// Using an HMAC here to avoid redirection state being modified.
+	// State format: base64(redirectURL)|hmac
+	redirectURL := req.GetRedirectUrl()
+	hmacSum := s.generateHMAC(redirectURL)
+	state := fmt.Sprintf("%s|%s", base64.URLEncoding.EncodeToString([]byte(redirectURL)), hmacSum)
+
+	codeVerifier := oauth2.GenerateVerifier()
+	s.pkceVerifiers.Store(state, codeVerifier)
+
+	return &proto.GetOIDCURLResponse{
+		Url: (&oauth2.Config{
+			ClientID:    s.oidcConfig.ClientID,
+			Endpoint:    provider.Endpoint(),
+			RedirectURL: s.oidcConfig.CallbackURL,
+			Scopes:      scopes,
+		}).AuthCodeURL(state, oauth2.S256ChallengeOption(codeVerifier)),
+	}, nil
+}
+
+// GetOIDCConfig returns the OIDC configuration for token validation.
+func (s *ProxyServiceServer) GetOIDCConfig() ProxyOIDCConfig {
+	return s.oidcConfig
+}
+
+// GetOIDCValidationConfig returns the OIDC configuration for token validation
+// in the format needed by ToProtoMapping.
+func (s *ProxyServiceServer) GetOIDCValidationConfig() reverseproxy.OIDCValidationConfig {
+	return reverseproxy.OIDCValidationConfig{
+		Issuer:             s.oidcConfig.Issuer,
+		Audiences:          []string{s.oidcConfig.Audience},
+		KeysLocation:       s.oidcConfig.KeysLocation,
+		MaxTokenAgeSeconds: 0, // No max token age by default
+	}
+}
+
+func (s *ProxyServiceServer) generateHMAC(input string) string {
+	mac := hmac.New(sha256.New, s.oidcConfig.HMACKey)
+	mac.Write([]byte(input))
+	return hex.EncodeToString(mac.Sum(nil))
+}
+
+// ValidateState validates the state parameter from an OAuth callback.
+// Returns the original redirect URL if valid, or an error if invalid.
+func (s *ProxyServiceServer) ValidateState(state string) (verifier, redirectURL string, err error) {
+	v, ok := s.pkceVerifiers.LoadAndDelete(state)
+	if !ok {
+		return "", "", errors.New("no verifier for state")
+	}
+	verifier, ok = v.(string)
+	if !ok {
+		return "", "", errors.New("invalid verifier for state")
+	}
+
+	parts := strings.Split(state, "|")
+	if len(parts) != 2 {
+		return "", "", errors.New("invalid state format")
+	}
+
+	encodedURL := parts[0]
+	providedHMAC := parts[1]
+
+	redirectURLBytes, err := base64.URLEncoding.DecodeString(encodedURL)
+	if err != nil {
+		return "", "", fmt.Errorf("invalid state encoding: %w", err)
+	}
+	redirectURL = string(redirectURLBytes)
+
+	expectedHMAC := s.generateHMAC(redirectURL)
+
+	if !hmac.Equal([]byte(providedHMAC), []byte(expectedHMAC)) {
+		return "", "", fmt.Errorf("invalid state signature")
+	}
+
+	return verifier, redirectURL, nil
+}
--- a/management/server/http/handler.go
+++ b/management/server/http/handler.go
@@ -16,6 +16,7 @@ import (
 	"github.com/netbirdio/netbird/management/internals/modules/reverseproxy/accesslogs"
 	"github.com/netbirdio/netbird/management/internals/modules/reverseproxy/domain"
 	reverseproxymanager "github.com/netbirdio/netbird/management/internals/modules/reverseproxy/manager"
+	nbgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
 	idpmanager "github.com/netbirdio/netbird/management/server/idp"

 	"github.com/netbirdio/management-integrations/integrations"
@@ -43,6 +44,7 @@ import (
 	"github.com/netbirdio/netbird/management/server/http/handlers/networks"
 	"github.com/netbirdio/netbird/management/server/http/handlers/peers"
 	"github.com/netbirdio/netbird/management/server/http/handlers/policies"
+	"github.com/netbirdio/netbird/management/server/http/handlers/proxy"
 	"github.com/netbirdio/netbird/management/server/http/handlers/routes"
 	"github.com/netbirdio/netbird/management/server/http/handlers/setup_keys"
 	"github.com/netbirdio/netbird/management/server/http/handlers/users"
@@ -64,7 +66,7 @@ const (
 )

 // NewAPIHandler creates the Management service HTTP API handler registering all the available endpoints.
-func NewAPIHandler(ctx context.Context, accountManager account.Manager, networksManager nbnetworks.Manager, resourceManager resources.Manager, routerManager routers.Manager, groupsManager nbgroups.Manager, LocationManager geolocation.Geolocation, authManager auth.Manager, appMetrics telemetry.AppMetrics, integratedValidator integrated_validator.IntegratedValidator, proxyController port_forwarding.Controller, permissionsManager permissions.Manager, peersManager nbpeers.Manager, settingsManager settings.Manager, zManager zones.Manager, rManager records.Manager, networkMapController network_map.Controller, idpManager idpmanager.Manager, reverseProxyManager reverseproxy.Manager, reverseProxyDomainManager domain.Manager, reverseProxyAccessLogsManager accesslogs.Manager) (http.Handler, error) {
+func NewAPIHandler(ctx context.Context, accountManager account.Manager, networksManager nbnetworks.Manager, resourceManager resources.Manager, routerManager routers.Manager, groupsManager nbgroups.Manager, LocationManager geolocation.Geolocation, authManager auth.Manager, appMetrics telemetry.AppMetrics, integratedValidator integrated_validator.IntegratedValidator, proxyController port_forwarding.Controller, permissionsManager permissions.Manager, peersManager nbpeers.Manager, settingsManager settings.Manager, zManager zones.Manager, rManager records.Manager, networkMapController network_map.Controller, idpManager idpmanager.Manager, reverseProxyManager reverseproxy.Manager, reverseProxyDomainManager domain.Manager, reverseProxyAccessLogsManager accesslogs.Manager, proxyGRPCServer *nbgrpc.ProxyServiceServer) (http.Handler, error) {

 	// Register bypass paths for unauthenticated endpoints
 	if err := bypass.AddBypassPath("/api/instance"); err != nil {
@@ -80,6 +82,10 @@ func NewAPIHandler(ctx context.Context, accountManager account.Manager, networks
 	if err := bypass.AddBypassPath("/api/users/invites/nbi_*/accept"); err != nil {
 		return nil, fmt.Errorf("failed to add bypass path: %w", err)
 	}
+	// OAuth callback for proxy authentication
+	if err := bypass.AddBypassPath("/api/oauth/callback"); err != nil {
+		return nil, fmt.Errorf("failed to add bypass path: %w", err)
+	}

 	var rateLimitingConfig *middleware.RateLimiterConfig
 	if os.Getenv(rateLimitingEnabledKey) == "true" {
@@ -162,6 +168,12 @@ func NewAPIHandler(ctx context.Context, accountManager account.Manager, networks
 	instance.AddVersionEndpoint(instanceManager, router)
 	reverseproxymanager.RegisterEndpoints(reverseProxyManager, reverseProxyDomainManager, reverseProxyAccessLogsManager, router)

+	// Register OAuth callback handler for proxy authentication
+	if proxyGRPCServer != nil {
+		oauthHandler := proxy.NewAuthCallbackHandler(proxyGRPCServer)
+		oauthHandler.RegisterEndpoints(router)
+	}
+
 	// Mount embedded IdP handler at /oauth2 path if configured
 	if embeddedIdpEnabled {
 		rootRouter.PathPrefix("/oauth2").Handler(corsMiddleware.Handler(embeddedIdP.Handler()))
--- a/management/server/http/handlers/proxy/auth.go
+++ b/management/server/http/handlers/proxy/auth.go
@@ -0,0 +1,77 @@
+package proxy
+
+import (
+	"net/http"
+	"net/url"
+
+	"github.com/coreos/go-oidc/v3/oidc"
+	"github.com/gorilla/mux"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/oauth2"
+
+	nbgrpc "github.com/netbirdio/netbird/management/internals/shared/grpc"
+)
+
+type AuthCallbackHandler struct {
+	proxyService *nbgrpc.ProxyServiceServer
+}
+
+func NewAuthCallbackHandler(proxyService *nbgrpc.ProxyServiceServer) *AuthCallbackHandler {
+	return &AuthCallbackHandler{
+		proxyService: proxyService,
+	}
+}
+
+func (h *AuthCallbackHandler) RegisterEndpoints(router *mux.Router) {
+	router.HandleFunc("/oauth/callback", h.handleCallback).Methods(http.MethodGet)
+}
+
+func (h *AuthCallbackHandler) handleCallback(w http.ResponseWriter, r *http.Request) {
+	state := r.URL.Query().Get("state")
+
+	codeVerifier, originalURL, err := h.proxyService.ValidateState(state)
+	if err != nil {
+		log.WithError(err).Error("OAuth callback state validation failed")
+		http.Error(w, "Invalid state parameter", http.StatusBadRequest)
+		return
+	}
+
+	redirectURL, err := url.Parse(originalURL)
+	if err != nil {
+		log.WithError(err).Error("Failed to parse redirect URL")
+		http.Error(w, "Invalid redirect URL", http.StatusBadRequest)
+		return
+	}
+
+	// Get OIDC configuration
+	oidcConfig := h.proxyService.GetOIDCConfig()
+
+	// Create OIDC provider to discover endpoints
+	provider, err := oidc.NewProvider(r.Context(), oidcConfig.Issuer)
+	if err != nil {
+		log.WithError(err).Error("Failed to create OIDC provider")
+		http.Error(w, "Failed to create OIDC provider", http.StatusInternalServerError)
+		return
+	}
+
+	token, err := (&oauth2.Config{
+		ClientID:    oidcConfig.ClientID,
+		Endpoint:    provider.Endpoint(),
+		RedirectURL: oidcConfig.CallbackURL,
+	}).Exchange(r.Context(), r.URL.Query().Get("code"), oauth2.VerifierOption(codeVerifier))
+	if err != nil {
+		log.WithError(err).Error("Failed to exchange code for token")
+		http.Error(w, "Failed to exchange code for token", http.StatusInternalServerError)
+		return
+	}
+
+	redirectQuery := redirectURL.Query()
+	redirectQuery.Set("access_token", token.AccessToken)
+	if token.RefreshToken != "" {
+		redirectQuery.Set("refresh_token", token.RefreshToken)
+	}
+	redirectURL.RawQuery = redirectQuery.Encode()
+
+	log.WithField("redirect", redirectURL).Debug("OAuth callback: redirecting user with token")
+	http.Redirect(w, r, redirectURL.String(), http.StatusFound)
+}
--- a/management/server/http/testing/testing_tools/channel/channel.go
+++ b/management/server/http/testing/testing_tools/channel/channel.go
@@ -11,6 +11,7 @@ import (

 	"github.com/netbirdio/management-integrations/integrations"

+	"github.com/netbirdio/netbird/management/internals/modules/reverseproxy/domain"
 	zonesManager "github.com/netbirdio/netbird/management/internals/modules/zones/manager"
 	recordsManager "github.com/netbirdio/netbird/management/internals/modules/zones/records/manager"
 	"github.com/netbirdio/netbird/management/internals/server/config"
@@ -102,7 +103,7 @@ func BuildApiBlackBoxWithDBState(t testing_tools.TB, sqlFile string, expectedPee
 	customZonesManager := zonesManager.NewManager(store, am, permissionsManager, "")
 	zoneRecordsManager := recordsManager.NewManager(store, am, permissionsManager)

-	apiHandler, err := http2.NewAPIHandler(context.Background(), am, networksManagerMock, resourcesManagerMock, routersManagerMock, groupsManagerMock, geoMock, authManagerMock, metrics, validatorMock, proxyController, permissionsManager, peersManager, settingsManager, customZonesManager, zoneRecordsManager, networkMapController, nil)
+	apiHandler, err := http2.NewAPIHandler(context.Background(), am, networksManagerMock, resourcesManagerMock, routersManagerMock, groupsManagerMock, geoMock, authManagerMock, metrics, validatorMock, proxyController, permissionsManager, peersManager, settingsManager, customZonesManager, zoneRecordsManager, networkMapController, nil, nil, domain.Manager{}, nil, nil)
 	if err != nil {
 		t.Fatalf("Failed to create API handler: %v", err)
 	}
--- a/management/server/idp/embedded.go
+++ b/management/server/idp/embedded.go
@@ -86,6 +86,11 @@ func (c *EmbeddedIdPConfig) ToYAMLConfig() (*dex.YAMLConfig, error) {
 	cliRedirectURIs = append(cliRedirectURIs, "/device/callback")
 	cliRedirectURIs = append(cliRedirectURIs, c.Issuer+"/device/callback")

+	// Build dashboard redirect URIs including the OAuth callback for proxy authentication
+	dashboardRedirectURIs := c.DashboardRedirectURIs
+	baseURL := strings.TrimSuffix(c.Issuer, "/oauth2")
+	dashboardRedirectURIs = append(dashboardRedirectURIs, baseURL+"/api/oauth/callback")
+
 	cfg := &dex.YAMLConfig{
 		Issuer: c.Issuer,
 		Storage: dex.Storage{
@@ -111,7 +116,7 @@ func (c *EmbeddedIdPConfig) ToYAMLConfig() (*dex.YAMLConfig, error) {
 				ID:           staticClientDashboard,
 				Name:         "NetBird Dashboard",
 				Public:       true,
-				RedirectURIs: c.DashboardRedirectURIs,
+				RedirectURIs: dashboardRedirectURIs,
 			},
 			{
 				ID:           staticClientCLI,
--- a/proxy/README.md
+++ b/proxy/README.md
@@ -14,14 +14,18 @@ Proxy Authentication methods supported are:
 - Simple PIN
 - HTTP Basic Auth Username and Password

-## Management Connection
+## Management Connection and Authentication

 The Proxy communicates with the Management server over a gRPC connection.
 Proxies act as clients to the Management server, the following RPCs are used:
 - Server-side streaming for proxied service updates.
 - Client-side streaming for proxy logs.

-## Authentication
+To authenticate with the Management server, the proxy server uses Machine-to-Machine OAuth2.
+If you are using the embedded IdP //TODO: explain how to get credentials.
+Otherwise, create a new machine-to-machine profile in your IdP for proxy servers and set the relevant settings in the proxy's environment or flags (see below).
+
+## User Authentication

 When a request hits the Proxy, it looks up the permitted authentication methods for the Host domain.
 If no authentication methods are registered for the Host domain, then no authentication will be applied (for fully public resources).
--- a/proxy/internal/auth/link.go
+++ b/proxy/internal/auth/link.go
@@ -50,8 +50,3 @@ func (l Link) Authenticate(r *http.Request) (string, string) {

 	return "", linkFormId
 }
-
-func (l Link) Middleware(next http.Handler) http.Handler {
-	// TODO: handle magic link redirects, should be similar to OIDC.
-	return next
-}
--- a/proxy/internal/auth/middleware.go
+++ b/proxy/internal/auth/middleware.go
@@ -56,12 +56,6 @@ type Scheme interface {
 	// be included in a UI template when prompting the user to authenticate.
 	// If the request is authenticated, then a user id should be returned.
 	Authenticate(*http.Request) (userid string, promptData string)
-	// Middleware is applied within the outer auth middleware, but they will
-	// be applied after authentication if no scheme has authenticated a
-	// request.
-	// If no scheme Middleware blocks the request processing, then the auth
-	// middleware will then present the user with the auth UI.
-	Middleware(http.Handler) http.Handler
 }

 type Middleware struct {
@@ -137,26 +131,13 @@ func (mw *Middleware) Protect(next http.Handler) http.Handler {
 			methods[s.Type().String()] = promptData
 		}

-		// The handler is passed through the scheme middlewares,
-		// if none of them intercept the request, then this handler will
-		// be called and present the user with the authentication page.
-		handler := http.Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			if err := tmpl.Execute(w, struct {
-				Methods map[string]string
-			}{
-				Methods: methods,
-			}); err != nil {
-				http.Error(w, err.Error(), http.StatusBadGateway)
-			}
-		}))
-
-		// No authentication succeeded. Apply the scheme handlers.
-		for _, s := range schemes {
-			handler = s.Middleware(handler)
+		if err := tmpl.Execute(w, struct {
+			Methods map[string]string
+		}{
+			Methods: methods,
+		}); err != nil {
+			http.Error(w, err.Error(), http.StatusBadGateway)
 		}
-
-		// Run the unauthenticated request against the scheme handlers and the final UI handler.
-		handler.ServeHTTP(w, r)
 	})
 }

--- a/proxy/internal/auth/oidc.go
+++ b/proxy/internal/auth/oidc.go
@@ -2,30 +2,31 @@ package auth

 import (
 	"context"
-	"crypto/rand"
-	"encoding/base64"
-	"fmt"
 	"net/http"
 	"net/url"
 	"strings"
 	"sync"
 	"time"

-	"github.com/coreos/go-oidc/v3/oidc"
-	"golang.org/x/oauth2"
+	gojwt "github.com/golang-jwt/jwt/v5"
+	"github.com/netbirdio/netbird/shared/management/proto"
+	"google.golang.org/grpc"
+
+	"github.com/netbirdio/netbird/shared/auth/jwt"
 )

 const stateExpiration = 10 * time.Minute

-const callbackPath = "/oauth/callback"
+type urlGenerator interface {
+	GetOIDCURL(context.Context, *proto.GetOIDCURLRequest, ...grpc.CallOption) (*proto.GetOIDCURLResponse, error)
+}

-// OIDCConfig holds configuration for OIDC authentication
+// OIDCConfig holds configuration for OIDC JWT verification
 type OIDCConfig struct {
-	OIDCProviderURL    string
-	OIDCClientID       string
-	OIDCClientSecret   string
-	OIDCScopes         []string
-	DistributionGroups []string
+	Issuer             string
+	Audiences          []string
+	KeysLocation       string
+	MaxTokenAgeSeconds int64
 }

 // oidcState stores CSRF state with expiration
@@ -36,50 +37,33 @@ type oidcState struct {

 // OIDC implements the Scheme interface for JWT/OIDC authentication
 type OIDC struct {
-	id, accountId, proxyURL string
-	verifier                *oidc.IDTokenVerifier
-	oauthConfig             *oauth2.Config
-	states                  map[string]*oidcState
-	statesMux               sync.RWMutex
-	distributionGroups      []string
+	id, accountId      string
+	validator          *jwt.Validator
+	maxTokenAgeSeconds int64
+	client             urlGenerator
+	states             map[string]*oidcState
+	statesMux          sync.RWMutex
 }

 // NewOIDC creates a new OIDC authentication scheme
-func NewOIDC(ctx context.Context, id, accountId, proxyURL string, cfg OIDCConfig) (*OIDC, error) {
-	if cfg.OIDCProviderURL == "" || cfg.OIDCClientID == "" {
-		return nil, fmt.Errorf("OIDC provider URL and client ID are required")
-	}
-
-	scopes := cfg.OIDCScopes
-	if len(scopes) == 0 {
-		scopes = []string{oidc.ScopeOpenID, "profile", "email"}
-	}
-
-	provider, err := oidc.NewProvider(ctx, cfg.OIDCProviderURL)
-	if err != nil {
-		return nil, fmt.Errorf("failed to create OIDC provider: %w", err)
-	}
-
+func NewOIDC(client urlGenerator, id, accountId string, cfg OIDCConfig) *OIDC {
 	o := &OIDC{
 		id:        id,
 		accountId: accountId,
-		proxyURL:  proxyURL,
-		verifier: provider.Verifier(&oidc.Config{
-			ClientID: cfg.OIDCClientID,
-		}),
-		oauthConfig: &oauth2.Config{
-			ClientID:     cfg.OIDCClientID,
-			ClientSecret: cfg.OIDCClientSecret,
-			Endpoint:     provider.Endpoint(),
-			Scopes:       scopes,
-		},
+		validator: jwt.NewValidator(
+			cfg.Issuer,
+			cfg.Audiences,
+			cfg.KeysLocation,
+			true,
+		),
+		maxTokenAgeSeconds: cfg.MaxTokenAgeSeconds,
+		client:             client,
 		states:             make(map[string]*oidcState),
-		distributionGroups: cfg.DistributionGroups,
 	}

 	go o.cleanupStates()

-	return o, nil
+	return o
 }

 func (*OIDC) Type() Method {
@@ -94,134 +78,74 @@ func (o *OIDC) Authenticate(r *http.Request) (string, string) {
 		}
 	}

-	// Try _auth_token query parameter (from OIDC callback redirect)
-	if token := r.URL.Query().Get("_auth_token"); token != "" {
-		if userID := o.validateToken(r.Context(), token); userID != "" {
-			return userID, ""
-		}
+	redirectURL := &url.URL{
+		Scheme: "https",
+		Host:   r.Host,
+		Path:   r.URL.Path,
 	}

-	// If the request is not authenticated, return a redirect URL for the UI to
-	// route the user through if they select OIDC login.
-	b := make([]byte, 32)
-	_, _ = rand.Read(b)
-	state := base64.URLEncoding.EncodeToString(b)
-
-	// TODO: this does not work if you are load balancing across multiple proxy servers.
-	o.statesMux.Lock()
-	o.states[state] = &oidcState{OriginalURL: fmt.Sprintf("https://%s%s", r.Host, r.URL), CreatedAt: time.Now()}
-	o.statesMux.Unlock()
-
-	return "", (&oauth2.Config{
-		ClientID:     o.oauthConfig.ClientID,
-		ClientSecret: o.oauthConfig.ClientSecret,
-		Endpoint:     o.oauthConfig.Endpoint,
-		RedirectURL:  o.proxyURL + callbackPath,
-		Scopes:       o.oauthConfig.Scopes,
-	}).AuthCodeURL(state)
-}
-
-// Middleware returns an http.Handler that handles OIDC callback and flow initiation.
-func (o *OIDC) Middleware(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		// Handle OIDC callback
-		if r.URL.Path == callbackPath {
-			o.handleCallback(w, r)
-			return
-		}
-
-		next.ServeHTTP(w, r)
+	res, err := o.client.GetOIDCURL(r.Context(), &proto.GetOIDCURLRequest{
+		Id:          o.id,
+		AccountId:   o.accountId,
+		RedirectUrl: redirectURL.String(),
 	})
+	if err != nil {
+		// TODO: log
+		return "", ""
+	}
+
+	return "", res.GetUrl()
 }

 // validateToken validates a JWT ID token and returns the user ID (subject)
-// Returns empty string if token is invalid or user's groups don't appear
-// in the distributionGroups.
+// Returns empty string if token is invalid.
 func (o *OIDC) validateToken(ctx context.Context, token string) string {
-	if o.verifier == nil {
+	if o.validator == nil {
 		return ""
 	}

-	idToken, err := o.verifier.Verify(ctx, token)
+	idToken, err := o.validator.ValidateAndParse(ctx, token)
 	if err != nil {
 		// TODO: log or return?
 		return ""
 	}

-	// If distribution groups are configured, check if user has access
-	if len(o.distributionGroups) > 0 {
-		var claims struct {
-			Groups []string `json:"groups"`
-		}
-		if err := idToken.Claims(&claims); err != nil {
-			// TODO: log or return?
-			return ""
-		}
-
-		allowed := make(map[string]struct{}, len(o.distributionGroups))
-		for _, g := range o.distributionGroups {
-			allowed[g] = struct{}{}
-		}
-
-		for _, g := range claims.Groups {
-			if _, ok := allowed[g]; ok {
-				return idToken.Subject
-			}
-		}
+	iat, err := idToken.Claims.GetIssuedAt()
+	if err != nil {
+		// TODO: log or return?
+		return ""
 	}

-	// Default deny
-	return ""
+	if time.Since(iat.Time).Seconds() > float64(o.maxTokenAgeSeconds) {
+		// TODO: log or return?
+		return ""
+	}
+
+	return extractUserID(idToken)
 }

-// handleCallback processes the OIDC callback
-func (o *OIDC) handleCallback(w http.ResponseWriter, r *http.Request) {
-	code := r.URL.Query().Get("code")
-	state := r.URL.Query().Get("state")
-
-	if code == "" || state == "" {
-		http.Error(w, "Invalid callback parameters", http.StatusBadRequest)
-		return
+func extractUserID(token *gojwt.Token) string {
+	if token == nil {
+		return "unknown"
 	}
-
-	// Verify and consume state
-	o.statesMux.Lock()
-	st, ok := o.states[state]
-	if ok {
-		delete(o.states, state)
-	}
-	o.statesMux.Unlock()
-
+	claims, ok := token.Claims.(gojwt.MapClaims)
 	if !ok {
-		http.Error(w, "Invalid or expired state", http.StatusBadRequest)
-		return
+		return "unknown"
 	}
+	return getUserIDFromClaims(claims)
+}

-	// Exchange code for token
-	token, err := o.oauthConfig.Exchange(r.Context(), code)
-	if err != nil {
-		http.Error(w, "Authentication failed", http.StatusUnauthorized)
-		return
+func getUserIDFromClaims(claims gojwt.MapClaims) string {
+	if sub, ok := claims["sub"].(string); ok && sub != "" {
+		return sub
 	}
-
-	// Prefer ID token if available
-	idToken := token.AccessToken
-	if id, ok := token.Extra("id_token").(string); ok && id != "" {
-		idToken = id
+	if userID, ok := claims["user_id"].(string); ok && userID != "" {
+		return userID
 	}
-
-	// Redirect back to original URL with token
-	origURL, err := url.Parse(st.OriginalURL)
-	if err != nil {
-		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-		return
+	if email, ok := claims["email"].(string); ok && email != "" {
+		return email
 	}
-
-	q := origURL.Query()
-	q.Set("_auth_token", idToken)
-	origURL.RawQuery = q.Encode()
-
-	http.Redirect(w, r, origURL.String(), http.StatusFound)
+	return "unknown"
 }

 // cleanupStates periodically removes expired states
--- a/proxy/internal/auth/password.go
+++ b/proxy/internal/auth/password.go
@@ -36,6 +36,11 @@ func (Password) Type() Method {
 func (p Password) Authenticate(r *http.Request) (string, string) {
 	password := r.FormValue(passwordFormId)

+	if password == "" {
+		// This cannot be authenticated so not worth wasting time sending the request.
+		return "", passwordFormId
+	}
+
 	res, err := p.client.Authenticate(r.Context(), &proto.AuthenticateRequest{
 		Id:        p.id,
 		AccountId: p.accountId,
@@ -56,7 +61,3 @@ func (p Password) Authenticate(r *http.Request) (string, string) {

 	return "", passwordFormId
 }
-
-func (p Password) Middleware(next http.Handler) http.Handler {
-	return next
-}
--- a/proxy/internal/auth/pin.go
+++ b/proxy/internal/auth/pin.go
@@ -36,6 +36,11 @@ func (Pin) Type() Method {
 func (p Pin) Authenticate(r *http.Request) (string, string) {
 	pin := r.FormValue(pinFormId)

+	if pin == "" {
+		// This cannot be authenticated so not worth wasting time sending the request.
+		return "", pinFormId
+	}
+
 	res, err := p.client.Authenticate(r.Context(), &proto.AuthenticateRequest{
 		Id:        p.id,
 		AccountId: p.accountId,
@@ -56,7 +61,3 @@ func (p Pin) Authenticate(r *http.Request) (string, string) {

 	return "", pinFormId
 }
-
-func (p Pin) Middleware(next http.Handler) http.Handler {
-	return next
-}
--- a/proxy/server.go
+++ b/proxy/server.go
@@ -309,18 +309,12 @@ func (s *Server) updateMapping(ctx context.Context, mapping *proto.ProxyMapping)
 	}
 	if mapping.GetAuth().GetOidc() != nil {
 		oidc := mapping.GetAuth().GetOidc()
-		scheme, err := auth.NewOIDC(ctx, mapping.GetId(), mapping.GetAccountId(), s.ProxyURL, auth.OIDCConfig{
-			OIDCProviderURL:    s.OIDCEndpoint,
-			OIDCClientID:       s.OIDCClientId,
-			OIDCClientSecret:   s.OIDCClientSecret,
-			OIDCScopes:         s.OIDCScopes,
-			DistributionGroups: oidc.GetDistributionGroups(),
-		})
-		if err != nil {
-			s.Logger.WithError(err).Error("Failed to create OIDC scheme")
-		} else {
-			schemes = append(schemes, scheme)
-		}
+		schemes = append(schemes, auth.NewOIDC(mgmtClient, mapping.GetId(), mapping.GetAccountId(), auth.OIDCConfig{
+			Issuer:             oidc.GetIssuer(),
+			Audiences:          oidc.GetAudiences(),
+			KeysLocation:       oidc.GetKeysLocation(),
+			MaxTokenAgeSeconds: oidc.GetMaxTokenAge(),
+		}))
 	}
 	if mapping.GetAuth().GetLink() {
 		schemes = append(schemes, auth.NewLink(mgmtClient, mapping.GetId(), mapping.GetAccountId()))
--- a/shared/management/proto/proxy_service.pb.go
+++ b/shared/management/proto/proxy_service.pb.go
@@ -323,7 +323,10 @@ type OIDC struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields

-	DistributionGroups []string `protobuf:"bytes,1,rep,name=distribution_groups,json=distributionGroups,proto3" json:"distribution_groups,omitempty"`
+	Issuer       string   `protobuf:"bytes,1,opt,name=issuer,proto3" json:"issuer,omitempty"`
+	Audiences    []string `protobuf:"bytes,2,rep,name=audiences,proto3" json:"audiences,omitempty"`
+	KeysLocation string   `protobuf:"bytes,3,opt,name=keys_location,json=keysLocation,proto3" json:"keys_location,omitempty"`
+	MaxTokenAge  int64    `protobuf:"varint,4,opt,name=max_token_age,json=maxTokenAge,proto3" json:"max_token_age,omitempty"`
 }

 func (x *OIDC) Reset() {
@@ -358,13 +361,34 @@ func (*OIDC) Descriptor() ([]byte, []int) {
 	return file_proxy_service_proto_rawDescGZIP(), []int{4}
 }

-func (x *OIDC) GetDistributionGroups() []string {
+func (x *OIDC) GetIssuer() string {
 	if x != nil {
-		return x.DistributionGroups
+		return x.Issuer
+	}
+	return ""
+}
+
+func (x *OIDC) GetAudiences() []string {
+	if x != nil {
+		return x.Audiences
 	}
 	return nil
 }

+func (x *OIDC) GetKeysLocation() string {
+	if x != nil {
+		return x.KeysLocation
+	}
+	return ""
+}
+
+func (x *OIDC) GetMaxTokenAge() int64 {
+	if x != nil {
+		return x.MaxTokenAge
+	}
+	return 0
+}
+
 type ProxyMapping struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -997,6 +1021,116 @@ func (x *AuthenticateResponse) GetSuccess() bool {
 	return false
 }

+type GetOIDCURLRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id          string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	AccountId   string `protobuf:"bytes,2,opt,name=account_id,json=accountId,proto3" json:"account_id,omitempty"`
+	RedirectUrl string `protobuf:"bytes,3,opt,name=redirect_url,json=redirectUrl,proto3" json:"redirect_url,omitempty"`
+}
+
+func (x *GetOIDCURLRequest) Reset() {
+	*x = GetOIDCURLRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proxy_service_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetOIDCURLRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetOIDCURLRequest) ProtoMessage() {}
+
+func (x *GetOIDCURLRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_proxy_service_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetOIDCURLRequest.ProtoReflect.Descriptor instead.
+func (*GetOIDCURLRequest) Descriptor() ([]byte, []int) {
+	return file_proxy_service_proto_rawDescGZIP(), []int{14}
+}
+
+func (x *GetOIDCURLRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *GetOIDCURLRequest) GetAccountId() string {
+	if x != nil {
+		return x.AccountId
+	}
+	return ""
+}
+
+func (x *GetOIDCURLRequest) GetRedirectUrl() string {
+	if x != nil {
+		return x.RedirectUrl
+	}
+	return ""
+}
+
+type GetOIDCURLResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Url string `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
+}
+
+func (x *GetOIDCURLResponse) Reset() {
+	*x = GetOIDCURLResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proxy_service_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetOIDCURLResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetOIDCURLResponse) ProtoMessage() {}
+
+func (x *GetOIDCURLResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_proxy_service_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetOIDCURLResponse.ProtoReflect.Descriptor instead.
+func (*GetOIDCURLResponse) Descriptor() ([]byte, []int) {
+	return file_proxy_service_proto_rawDescGZIP(), []int{15}
+}
+
+func (x *GetOIDCURLResponse) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
+}
+
 var File_proxy_service_proto protoreflect.FileDescriptor

 var file_proxy_service_proto_rawDesc = []byte{
@@ -1031,111 +1165,130 @@ var file_proxy_service_proto_rawDesc = []byte{
 	0x28, 0x0b, 0x32, 0x10, 0x2e, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x2e,
 	0x4f, 0x49, 0x44, 0x43, 0x48, 0x00, 0x52, 0x04, 0x6f, 0x69, 0x64, 0x63, 0x88, 0x01, 0x01, 0x12,
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 }

 var (
@@ -1151,7 +1304,7 @@ func file_proxy_service_proto_rawDescGZIP() []byte {
 }

 var file_proxy_service_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_proxy_service_proto_msgTypes = make([]protoimpl.MessageInfo, 14)
+var file_proxy_service_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_proxy_service_proto_goTypes = []interface{}{
 	(ProxyMappingUpdateType)(0),      // 0: management.ProxyMappingUpdateType
 	(*GetMappingUpdateRequest)(nil),  // 1: management.GetMappingUpdateRequest
@@ -1168,28 +1321,32 @@ var file_proxy_service_proto_goTypes = []interface{}{
 	(*PinRequest)(nil),               // 12: management.PinRequest
 	(*LinkRequest)(nil),              // 13: management.LinkRequest
 	(*AuthenticateResponse)(nil),     // 14: management.AuthenticateResponse
-	(*timestamppb.Timestamp)(nil),    // 15: google.protobuf.Timestamp
+	(*GetOIDCURLRequest)(nil),        // 15: management.GetOIDCURLRequest
+	(*GetOIDCURLResponse)(nil),       // 16: management.GetOIDCURLResponse
+	(*timestamppb.Timestamp)(nil),    // 17: google.protobuf.Timestamp
 }
 var file_proxy_service_proto_depIdxs = []int32{
-	15, // 0: management.GetMappingUpdateRequest.started_at:type_name -> google.protobuf.Timestamp
+	17, // 0: management.GetMappingUpdateRequest.started_at:type_name -> google.protobuf.Timestamp
 	6,  // 1: management.GetMappingUpdateResponse.mapping:type_name -> management.ProxyMapping
 	5,  // 2: management.Authentication.oidc:type_name -> management.OIDC
 	0,  // 3: management.ProxyMapping.type:type_name -> management.ProxyMappingUpdateType
 	3,  // 4: management.ProxyMapping.path:type_name -> management.PathMapping
 	4,  // 5: management.ProxyMapping.auth:type_name -> management.Authentication
 	9,  // 6: management.SendAccessLogRequest.log:type_name -> management.AccessLog
-	15, // 7: management.AccessLog.timestamp:type_name -> google.protobuf.Timestamp
+	17, // 7: management.AccessLog.timestamp:type_name -> google.protobuf.Timestamp
 	11, // 8: management.AuthenticateRequest.password:type_name -> management.PasswordRequest
 	12, // 9: management.AuthenticateRequest.pin:type_name -> management.PinRequest
 	13, // 10: management.AuthenticateRequest.link:type_name -> management.LinkRequest
 	1,  // 11: management.ProxyService.GetMappingUpdate:input_type -> management.GetMappingUpdateRequest
 	7,  // 12: management.ProxyService.SendAccessLog:input_type -> management.SendAccessLogRequest
 	10, // 13: management.ProxyService.Authenticate:input_type -> management.AuthenticateRequest
-	2,  // 14: management.ProxyService.GetMappingUpdate:output_type -> management.GetMappingUpdateResponse
-	8,  // 15: management.ProxyService.SendAccessLog:output_type -> management.SendAccessLogResponse
-	14, // 16: management.ProxyService.Authenticate:output_type -> management.AuthenticateResponse
-	14, // [14:17] is the sub-list for method output_type
-	11, // [11:14] is the sub-list for method input_type
+	15, // 14: management.ProxyService.GetOIDCURL:input_type -> management.GetOIDCURLRequest
+	2,  // 15: management.ProxyService.GetMappingUpdate:output_type -> management.GetMappingUpdateResponse
+	8,  // 16: management.ProxyService.SendAccessLog:output_type -> management.SendAccessLogResponse
+	14, // 17: management.ProxyService.Authenticate:output_type -> management.AuthenticateResponse
+	16, // 18: management.ProxyService.GetOIDCURL:output_type -> management.GetOIDCURLResponse
+	15, // [15:19] is the sub-list for method output_type
+	11, // [11:15] is the sub-list for method input_type
 	11, // [11:11] is the sub-list for extension type_name
 	11, // [11:11] is the sub-list for extension extendee
 	0,  // [0:11] is the sub-list for field type_name
@@ -1369,6 +1526,30 @@ func file_proxy_service_proto_init() {
 				return nil
 			}
 		}
+		file_proxy_service_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetOIDCURLRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_proxy_service_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetOIDCURLResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	file_proxy_service_proto_msgTypes[3].OneofWrappers = []interface{}{}
 	file_proxy_service_proto_msgTypes[9].OneofWrappers = []interface{}{
@@ -1382,7 +1563,7 @@ func file_proxy_service_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proxy_service_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   14,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
--- a/shared/management/proto/proxy_service.proto
+++ b/shared/management/proto/proxy_service.proto
@@ -14,6 +14,8 @@ service ProxyService {
  rpc SendAccessLog(SendAccessLogRequest) returns (SendAccessLogResponse);

  rpc Authenticate(AuthenticateRequest) returns (AuthenticateResponse);
+
+  rpc GetOIDCURL(GetOIDCURLRequest) returns (GetOIDCURLResponse);
 }

 // GetMappingUpdateRequest is sent to initialise a mapping stream.
@@ -50,7 +52,10 @@ message Authentication {
 }

 message OIDC {
-  repeated string distribution_groups = 1;
+  string issuer = 1;
+  repeated string audiences = 2;
+  string keys_location = 3;
+  int64 max_token_age = 4;
 }

 message ProxyMapping {
@@ -113,3 +118,13 @@ message LinkRequest {
 message AuthenticateResponse {
  bool success = 1;
 }
+
+message GetOIDCURLRequest {
+  string id = 1;
+  string account_id = 2;
+  string redirect_url = 3;
+}
+
+message GetOIDCURLResponse {
+  string url = 1;
+}
--- a/shared/management/proto/proxy_service_grpc.pb.go
+++ b/shared/management/proto/proxy_service_grpc.pb.go
@@ -21,6 +21,7 @@ type ProxyServiceClient interface {
 	GetMappingUpdate(ctx context.Context, in *GetMappingUpdateRequest, opts ...grpc.CallOption) (ProxyService_GetMappingUpdateClient, error)
 	SendAccessLog(ctx context.Context, in *SendAccessLogRequest, opts ...grpc.CallOption) (*SendAccessLogResponse, error)
 	Authenticate(ctx context.Context, in *AuthenticateRequest, opts ...grpc.CallOption) (*AuthenticateResponse, error)
+	GetOIDCURL(ctx context.Context, in *GetOIDCURLRequest, opts ...grpc.CallOption) (*GetOIDCURLResponse, error)
 }

 type proxyServiceClient struct {
@@ -81,6 +82,15 @@ func (c *proxyServiceClient) Authenticate(ctx context.Context, in *AuthenticateR
 	return out, nil
 }

+func (c *proxyServiceClient) GetOIDCURL(ctx context.Context, in *GetOIDCURLRequest, opts ...grpc.CallOption) (*GetOIDCURLResponse, error) {
+	out := new(GetOIDCURLResponse)
+	err := c.cc.Invoke(ctx, "/management.ProxyService/GetOIDCURL", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // ProxyServiceServer is the server API for ProxyService service.
 // All implementations must embed UnimplementedProxyServiceServer
 // for forward compatibility
@@ -88,6 +98,7 @@ type ProxyServiceServer interface {
 	GetMappingUpdate(*GetMappingUpdateRequest, ProxyService_GetMappingUpdateServer) error
 	SendAccessLog(context.Context, *SendAccessLogRequest) (*SendAccessLogResponse, error)
 	Authenticate(context.Context, *AuthenticateRequest) (*AuthenticateResponse, error)
+	GetOIDCURL(context.Context, *GetOIDCURLRequest) (*GetOIDCURLResponse, error)
 	mustEmbedUnimplementedProxyServiceServer()
 }

@@ -104,6 +115,9 @@ func (UnimplementedProxyServiceServer) SendAccessLog(context.Context, *SendAcces
 func (UnimplementedProxyServiceServer) Authenticate(context.Context, *AuthenticateRequest) (*AuthenticateResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Authenticate not implemented")
 }
+func (UnimplementedProxyServiceServer) GetOIDCURL(context.Context, *GetOIDCURLRequest) (*GetOIDCURLResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetOIDCURL not implemented")
+}
 func (UnimplementedProxyServiceServer) mustEmbedUnimplementedProxyServiceServer() {}

 // UnsafeProxyServiceServer may be embedded to opt out of forward compatibility for this service.
@@ -174,6 +188,24 @@ func _ProxyService_Authenticate_Handler(srv interface{}, ctx context.Context, de
 	return interceptor(ctx, in, info, handler)
 }

+func _ProxyService_GetOIDCURL_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetOIDCURLRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ProxyServiceServer).GetOIDCURL(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/management.ProxyService/GetOIDCURL",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ProxyServiceServer).GetOIDCURL(ctx, req.(*GetOIDCURLRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // ProxyService_ServiceDesc is the grpc.ServiceDesc for ProxyService service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -189,6 +221,10 @@ var ProxyService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Authenticate",
 			Handler:    _ProxyService_Authenticate_Handler,
 		},
+		{
+			MethodName: "GetOIDCURL",
+			Handler:    _ProxyService_GetOIDCURL_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{