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nginx/nginx.conf

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+events {
+    worker_connections 1024;
+}
+
+http {
+    # Basic settings
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 65;
+    types_hash_max_size 2048;
+    server_tokens off;
+
+    # SSL settings
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers HIGH:!aNULL:!MD5;
+    ssl_prefer_server_ciphers on;
+
+    # Logging
+    access_log /var/log/nginx/access.log;
+    error_log /var/log/nginx/error.log;
+
+    # Rate limiting
+    limit_req_zone $binary_remote_addr zone=login_limit:10m rate=10r/m;
+    limit_req_zone $binary_remote_addr zone=general_limit:10m rate=100r/m;
+
+    # Upstream to OIDC server
+    upstream oidc_backend {
+        server oidc_server:5000;
+    }
+
+    # HTTP server - redirect to HTTPS
+    server {
+        listen 80;
+        server_name _;
+
+        # Allow Let's Encrypt ACME challenge
+        location /.well-known/acme-challenge/ {
+            root /var/www/certbot;
+        }
+
+        # Redirect all other traffic to HTTPS
+        location / {
+            return 301 https://$host$request_uri;
+        }
+    }
+
+    # HTTPS server
+    server {
+        listen 443 ssl http2;
+        server_name _;  # Replace with your domain
+
+        # SSL certificates (use Let's Encrypt)
+        # Generate with: certbot certonly --webroot -w /var/www/certbot -d yourdomain.com
+        ssl_certificate /etc/nginx/ssl/fullchain.pem;
+        ssl_certificate_key /etc/nginx/ssl/privkey.pem;
+
+        # Security headers
+        add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+        add_header X-Frame-Options "SAMEORIGIN" always;
+        add_header X-Content-Type-Options "nosniff" always;
+        add_header X-XSS-Protection "1; mode=block" always;
+        add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+        # Max upload size
+        client_max_body_size 10M;
+
+        # Proxy settings
+        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;
+        proxy_redirect off;
+
+        # Health check endpoint (no rate limit)
+        location /health {
+            proxy_pass http://oidc_backend;
+        }
+
+        # Login endpoints with strict rate limiting
+        location ~ ^/(login|admin/login|authorize|token) {
+            limit_req zone=login_limit burst=5 nodelay;
+            proxy_pass http://oidc_backend;
+        }
+
+        # All other locations
+        location / {
+            limit_req zone=general_limit burst=20 nodelay;
+            proxy_pass http://oidc_backend;
+        }
+    }
+}