🛡️ Proxy Authentication

Authenticate users via your existing reverse proxy (Authentik, Authelia, Cloudflare Zero Trust, etc.).

🚀 Quick Start

Generate Secret: Create a strong random string.

Configure Pulse:

PROXY_AUTH_SECRET=your-random-secret
PROXY_AUTH_USER_HEADER=X-Authentik-Username

Configure Proxy: Set the proxy to send X-Proxy-Secret and the user header.

⚙️ Configuration

Variable	Description	Default
`PROXY_AUTH_SECRET`	Required. Shared secret to verify requests.	-
`PROXY_AUTH_USER_HEADER`	Required. Header containing the username.	-
`PROXY_AUTH_ROLE_HEADER`	Header containing user groups/roles.	-
`PROXY_AUTH_ADMIN_ROLE`	Role name that grants admin access.	`admin`
`PROXY_AUTH_LOGOUT_URL`	URL to redirect to after logout.	-

📦 Examples

Authentik (with Traefik)

docker-compose.yml:

environment:
  - PROXY_AUTH_SECRET=secure-secret
  - PROXY_AUTH_USER_HEADER=X-Authentik-Username

Traefik Middleware:

headers:
  customRequestHeaders:
    X-Proxy-Secret: "secure-secret"

Authelia (Nginx)

location / {
    auth_request /authelia;
    proxy_set_header X-Proxy-Secret "secure-secret";
    proxy_set_header Remote-User $upstream_http_remote_user;
    proxy_pass http://pulse:7655;
}

Cloudflare Tunnel

Zero Trust Dashboard: Applications → Add Application.
Settings: HTTP Settings → HTTP Headers.
Add Header: X-Proxy-Secret = your-secret.
Pulse Config: PROXY_AUTH_USER_HEADER=Cf-Access-Authenticated-User-Email.

🔧 Troubleshooting

Issue	Check
401 Unauthorized	Verify `X-Proxy-Secret` matches `PROXY_AUTH_SECRET`. Check if headers are being stripped by intermediate proxies.
Not Admin	Verify `PROXY_AUTH_ROLE_HEADER` is set and contains `PROXY_AUTH_ADMIN_ROLE`.
Logout Fails	Ensure `PROXY_AUTH_LOGOUT_URL` is set to your IdP's logout endpoint.

Verify Headers

Use curl to simulate a proxy request:

curl -H "X-Proxy-Secret: your-secret" \
     -H "X-Authentik-Username: admin" \
     http://localhost:7655/api/state

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