shellfleet/sys-manager.nginx.conf at main · sppidy/shellfleet · GitHub

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server {
    listen 80;
    server_name dashboard.example.com;

    # Redirect all HTTP traffic to HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl http2;
    server_name dashboard.example.com;

    # SSL Certificates (managed by Certbot)
    ssl_certificate /etc/letsencrypt/live/dashboard.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/dashboard.example.com/privkey.pem;

    # Recommended SSL Settings
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;

    # --- Hardening ---
    server_tokens off;            # don't leak the nginx version
    client_max_body_size 25m;     # cap request bodies (uploads / config POSTs)

    # HSTS: pin HTTPS for a year. Only safe once every subdomain is HTTPS;
    # drop includeSubDomains otherwise.
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    # The app sets its own Content-Security-Policy where it matters; not overridden here.

    # --- Rate limiting (optional, opt-in) ---
    # `limit_req_zone` must be declared in the http{} context, so it can't live
    # in this server snippet. To enable, add to nginx.conf's http{} block:
    #     limit_req_zone $binary_remote_addr zone=sfauth:10m rate=10r/s;
    # then uncomment the `limit_req` line in the /(api|auth)/ block below.

    # --- Next.js Frontend ---
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;

        # Pass real client IP
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # --- Rust API & Auth Routes ---
    location ~ ^/(api|auth)/ {
        # limit_req zone=sfauth burst=20 nodelay;   # see rate-limit note above
        proxy_pass http://127.0.0.1:8080;
        proxy_http_version 1.1;
        proxy_set_header Host $host;

        # Pass real client IP
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # --- WebSocket Connections (UI only) ---
    # `/agent/ws` is NO LONGER proxied here. Agents now connect
    # directly to the server's mutual-TLS listener (default :8443,
    # AGENT_MTLS_PORT) and present a client certificate. Only the
    # browser UI WebSocket stays on this nginx-terminated path —
    # browsers can't present client certs and /ui/ws authenticates via
    # Origin validation + session cookie.
    location ~ ^/ui/ws {
        proxy_pass http://127.0.0.1:8080;
        proxy_http_version 1.1;

        # Crucial headers for WebSocket Upgrade
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";

        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Prevent Nginx from closing the WebSocket connection too quickly
        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;
    }
}