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openclaw/docs/gateway/trusted-proxy-auth.md
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---
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title: "Trusted Proxy Auth"
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summary: "Delegate gateway authentication to a trusted reverse proxy (Pomerium, Caddy, nginx + OAuth)"
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read_when:
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- Running OpenClaw behind an identity-aware proxy
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- Setting up Pomerium, Caddy, or nginx with OAuth in front of OpenClaw
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- Fixing WebSocket 1008 unauthorized errors with reverse proxy setups
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- Deciding where to set HSTS and other HTTP hardening headers
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---
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# Trusted Proxy Auth
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> ⚠️ **Security-sensitive feature.** This mode delegates authentication entirely to your reverse proxy. Misconfiguration can expose your Gateway to unauthorized access. Read this page carefully before enabling.
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## When to Use
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Use `trusted-proxy` auth mode when:
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- You run OpenClaw behind an **identity-aware proxy** (Pomerium, Caddy + OAuth, nginx + oauth2-proxy, Traefik + forward auth)
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- Your proxy handles all authentication and passes user identity via headers
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- You're in a Kubernetes or container environment where the proxy is the only path to the Gateway
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- You're hitting WebSocket `1008 unauthorized` errors because browsers can't pass tokens in WS payloads
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## When NOT to Use
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- If your proxy doesn't authenticate users (just a TLS terminator or load balancer)
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- If there's any path to the Gateway that bypasses the proxy (firewall holes, internal network access)
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- If you're unsure whether your proxy correctly strips/overwrites forwarded headers
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- If you only need personal single-user access (consider Tailscale Serve + loopback for simpler setup)
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## How It Works
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1. Your reverse proxy authenticates users (OAuth, OIDC, SAML, etc.)
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2. Proxy adds a header with the authenticated user identity (e.g., `x-forwarded-user: nick@example.com`)
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3. OpenClaw checks that the request came from a **trusted proxy IP** (configured in `gateway.trustedProxies`)
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4. OpenClaw extracts the user identity from the configured header
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5. If everything checks out, the request is authorized
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## Control UI Pairing Behavior
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When `gateway.auth.mode = "trusted-proxy"` is active and the request passes
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trusted-proxy checks, Control UI WebSocket sessions can connect without device
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pairing identity.
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Implications:
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- Pairing is no longer the primary gate for Control UI access in this mode.
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- Your reverse proxy auth policy and `allowUsers` become the effective access control.
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- Keep gateway ingress locked to trusted proxy IPs only (`gateway.trustedProxies` + firewall).
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## Configuration
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```json5
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{
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gateway: {
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// Trusted-proxy auth expects requests from a non-loopback trusted proxy source
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bind: "lan",
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// CRITICAL: Only add your proxy's IP(s) here
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trustedProxies: ["10.0.0.1", "172.17.0.1"],
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auth: {
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mode: "trusted-proxy",
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trustedProxy: {
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// Header containing authenticated user identity (required)
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userHeader: "x-forwarded-user",
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// Optional: headers that MUST be present (proxy verification)
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requiredHeaders: ["x-forwarded-proto", "x-forwarded-host"],
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// Optional: restrict to specific users (empty = allow all)
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allowUsers: ["nick@example.com", "admin@company.org"],
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},
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},
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},
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}
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```
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Important runtime rule:
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- Trusted-proxy auth rejects loopback-source requests (`127.0.0.1`, `::1`, loopback CIDRs).
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- Same-host loopback reverse proxies do **not** satisfy trusted-proxy auth.
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- For same-host loopback proxy setups, use token/password auth instead, or route through a non-loopback trusted proxy address that OpenClaw can verify.
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- Non-loopback Control UI deployments still need explicit `gateway.controlUi.allowedOrigins`.
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### Configuration Reference
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| Field | Required | Description |
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| ------------------------------------------- | -------- | --------------------------------------------------------------------------- |
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| `gateway.trustedProxies` | Yes | Array of proxy IP addresses to trust. Requests from other IPs are rejected. |
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| `gateway.auth.mode` | Yes | Must be `"trusted-proxy"` |
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| `gateway.auth.trustedProxy.userHeader` | Yes | Header name containing the authenticated user identity |
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| `gateway.auth.trustedProxy.requiredHeaders` | No | Additional headers that must be present for the request to be trusted |
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| `gateway.auth.trustedProxy.allowUsers` | No | Allowlist of user identities. Empty means allow all authenticated users. |
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## TLS termination and HSTS
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Use one TLS termination point and apply HSTS there.
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### Recommended pattern: proxy TLS termination
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When your reverse proxy handles HTTPS for `https://control.example.com`, set
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`Strict-Transport-Security` at the proxy for that domain.
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- Good fit for internet-facing deployments.
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- Keeps certificate + HTTP hardening policy in one place.
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- OpenClaw can stay on loopback HTTP behind the proxy.
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Example header value:
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```text
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Strict-Transport-Security: max-age=31536000; includeSubDomains
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```
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### Gateway TLS termination
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If OpenClaw itself serves HTTPS directly (no TLS-terminating proxy), set:
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```json5
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{
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gateway: {
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tls: { enabled: true },
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http: {
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securityHeaders: {
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strictTransportSecurity: "max-age=31536000; includeSubDomains",
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},
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},
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},
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}
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```
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`strictTransportSecurity` accepts a string header value, or `false` to disable explicitly.
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### Rollout guidance
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- Start with a short max age first (for example `max-age=300`) while validating traffic.
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- Increase to long-lived values (for example `max-age=31536000`) only after confidence is high.
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- Add `includeSubDomains` only if every subdomain is HTTPS-ready.
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- Use preload only if you intentionally meet preload requirements for your full domain set.
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- Loopback-only local development does not benefit from HSTS.
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## Proxy Setup Examples
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### Pomerium
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Pomerium passes identity in `x-pomerium-claim-email` (or other claim headers) and a JWT in `x-pomerium-jwt-assertion`.
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```json5
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{
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gateway: {
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bind: "lan",
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trustedProxies: ["10.0.0.1"], // Pomerium's IP
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auth: {
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mode: "trusted-proxy",
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trustedProxy: {
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userHeader: "x-pomerium-claim-email",
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requiredHeaders: ["x-pomerium-jwt-assertion"],
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},
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},
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},
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}
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```
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Pomerium config snippet:
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```yaml
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routes:
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- from: https://openclaw.example.com
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to: http://openclaw-gateway:18789
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policy:
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- allow:
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or:
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- email:
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is: nick@example.com
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pass_identity_headers: true
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```
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### Caddy with OAuth
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Caddy with the `caddy-security` plugin can authenticate users and pass identity headers.
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```json5
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{
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gateway: {
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bind: "lan",
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trustedProxies: ["10.0.0.1"], // Caddy/sidecar proxy IP
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auth: {
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mode: "trusted-proxy",
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trustedProxy: {
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userHeader: "x-forwarded-user",
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},
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},
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},
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}
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```
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Caddyfile snippet:
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```
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openclaw.example.com {
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authenticate with oauth2_provider
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authorize with policy1
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reverse_proxy openclaw:18789 {
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header_up X-Forwarded-User {http.auth.user.email}
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}
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}
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```
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### nginx + oauth2-proxy
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oauth2-proxy authenticates users and passes identity in `x-auth-request-email`.
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```json5
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{
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gateway: {
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bind: "lan",
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trustedProxies: ["10.0.0.1"], // nginx/oauth2-proxy IP
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auth: {
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mode: "trusted-proxy",
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trustedProxy: {
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userHeader: "x-auth-request-email",
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},
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},
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},
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}
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```
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nginx config snippet:
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```nginx
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location / {
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auth_request /oauth2/auth;
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auth_request_set $user $upstream_http_x_auth_request_email;
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proxy_pass http://openclaw:18789;
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proxy_set_header X-Auth-Request-Email $user;
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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}
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```
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### Traefik with Forward Auth
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```json5
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{
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gateway: {
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bind: "lan",
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trustedProxies: ["172.17.0.1"], // Traefik container IP
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auth: {
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mode: "trusted-proxy",
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trustedProxy: {
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userHeader: "x-forwarded-user",
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},
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},
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},
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}
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```
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## Mixed token configuration
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OpenClaw rejects ambiguous configurations where both a `gateway.auth.token` (or `OPENCLAW_GATEWAY_TOKEN`) and `trusted-proxy` mode are active at the same time. Mixed token configs can cause loopback requests to silently authenticate on the wrong auth path.
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If you see a `mixed_trusted_proxy_token` error on startup:
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- Remove the shared token when using trusted-proxy mode, or
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- Switch `gateway.auth.mode` to `"token"` if you intend token-based auth.
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Loopback trusted-proxy auth also fails closed: same-host callers must supply the configured identity headers through a trusted proxy instead of being silently authenticated.
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## Operator scopes header
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Trusted-proxy auth is an **identity-bearing** HTTP mode, so callers may
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optionally declare operator scopes with `x-openclaw-scopes`.
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Examples:
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- `x-openclaw-scopes: operator.read`
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- `x-openclaw-scopes: operator.read,operator.write`
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- `x-openclaw-scopes: operator.admin,operator.write`
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Behavior:
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- When the header is present, OpenClaw honors the declared scope set.
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- When the header is present but empty, the request declares **no** operator scopes.
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- When the header is absent, normal identity-bearing HTTP APIs fall back to the standard operator default scope set.
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- Gateway-auth **plugin HTTP routes** are narrower by default: when `x-openclaw-scopes` is absent, their runtime scope falls back to `operator.write`.
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- Browser-origin HTTP requests still have to pass `gateway.controlUi.allowedOrigins` (or deliberate Host-header fallback mode) even after trusted-proxy auth succeeds.
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Practical rule:
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- Send `x-openclaw-scopes` explicitly when you want a trusted-proxy request to
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be narrower than the defaults, or when a gateway-auth plugin route needs
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something stronger than write scope.
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## Security Checklist
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Before enabling trusted-proxy auth, verify:
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- [ ] **Proxy is the only path**: The Gateway port is firewalled from everything except your proxy
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- [ ] **trustedProxies is minimal**: Only your actual proxy IPs, not entire subnets
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- [ ] **No loopback proxy source**: trusted-proxy auth fails closed for loopback-source requests
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- [ ] **Proxy strips headers**: Your proxy overwrites (not appends) `x-forwarded-*` headers from clients
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- [ ] **TLS termination**: Your proxy handles TLS; users connect via HTTPS
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- [ ] **allowedOrigins is explicit**: Non-loopback Control UI uses explicit `gateway.controlUi.allowedOrigins`
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- [ ] **allowUsers is set** (recommended): Restrict to known users rather than allowing anyone authenticated
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- [ ] **No mixed token config**: Do not set both `gateway.auth.token` and `gateway.auth.mode: "trusted-proxy"`
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## Security Audit
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`openclaw security audit` will flag trusted-proxy auth with a **critical** severity finding. This is intentional — it's a reminder that you're delegating security to your proxy setup.
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The audit checks for:
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- Base `gateway.trusted_proxy_auth` warning/critical reminder
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- Missing `trustedProxies` configuration
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- Missing `userHeader` configuration
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- Empty `allowUsers` (allows any authenticated user)
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- Wildcard or missing browser-origin policy on exposed Control UI surfaces
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## Troubleshooting
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### "trusted_proxy_untrusted_source"
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The request didn't come from an IP in `gateway.trustedProxies`. Check:
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- Is the proxy IP correct? (Docker container IPs can change)
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- Is there a load balancer in front of your proxy?
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- Use `docker inspect` or `kubectl get pods -o wide` to find actual IPs
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### "trusted_proxy_loopback_source"
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OpenClaw rejected a loopback-source trusted-proxy request.
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Check:
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- Is the proxy connecting from `127.0.0.1` / `::1`?
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- Are you trying to use trusted-proxy auth with a same-host loopback reverse proxy?
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Fix:
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- Use token/password auth for same-host loopback proxy setups, or
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- Route through a non-loopback trusted proxy address and keep that IP in `gateway.trustedProxies`.
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### "trusted_proxy_user_missing"
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The user header was empty or missing. Check:
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- Is your proxy configured to pass identity headers?
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- Is the header name correct? (case-insensitive, but spelling matters)
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- Is the user actually authenticated at the proxy?
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### "trusted*proxy_missing_header*\*"
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A required header wasn't present. Check:
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- Your proxy configuration for those specific headers
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- Whether headers are being stripped somewhere in the chain
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### "trusted_proxy_user_not_allowed"
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The user is authenticated but not in `allowUsers`. Either add them or remove the allowlist.
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### "trusted_proxy_origin_not_allowed"
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Trusted-proxy auth succeeded, but the browser `Origin` header did not pass Control UI origin checks.
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Check:
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- `gateway.controlUi.allowedOrigins` includes the exact browser origin
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- You are not relying on wildcard origins unless you intentionally want allow-all behavior
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- If you intentionally use Host-header fallback mode, `gateway.controlUi.dangerouslyAllowHostHeaderOriginFallback=true` is set deliberately
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### WebSocket Still Failing
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Make sure your proxy:
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- Supports WebSocket upgrades (`Upgrade: websocket`, `Connection: upgrade`)
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- Passes the identity headers on WebSocket upgrade requests (not just HTTP)
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- Doesn't have a separate auth path for WebSocket connections
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## Migration from Token Auth
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If you're moving from token auth to trusted-proxy:
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1. Configure your proxy to authenticate users and pass headers
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2. Test the proxy setup independently (curl with headers)
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3. Update OpenClaw config with trusted-proxy auth
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4. Restart the Gateway
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5. Test WebSocket connections from the Control UI
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6. Run `openclaw security audit` and review findings
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## Related
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- [Security](/gateway/security) — full security guide
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- [Configuration](/gateway/configuration) — config reference
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- [Remote Access](/gateway/remote) — other remote access patterns
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- [Tailscale](/gateway/tailscale) — simpler alternative for tailnet-only access
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