Initial commit - Project start (July 17, 2025)

Original: feat: enhance security logging and ensure rate limit blocks are properly tracked

- Add comprehensive logging for rate limit blocks with full request details
  - IP address (with proper proxy detection), user agent, headers, timestamps
  - Rate limit info (current count, limit, remaining, reset time)
  - Separate tracking for auth vs general endpoints

- Enhance authentication failure logging
  - JWT validation failures with detailed error info
  - Admin auth attempts without token
  - Failed token validation with user context
  - All events include IP, path, method, user agent

- Improve Winston logger configuration for production
  - Add automatic log rotation (10MB errors, 50MB combined)
  - Create separate security.log for auth/rate limit events
  - Ensure logs directory exists automatically
  - Add structured JSON format for log aggregation
  - Support container logging with LOG_TO_CONSOLE env var

- Create comprehensive documentation
  - Security logging guide with examples
  - Monitoring recommendations
  - Configuration reference

- Add test script to verify logging functionality

All rate limit settings remain configurable via admin panel:
- Window duration, max requests, auth limits
- Skip authenticated requests option
- Public endpoints only option

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

nginx/nginx.conf

@@ -0,0 +1,40 @@
+user nginx;
+worker_processes auto;
+error_log /var/log/nginx/error.log warn;
+pid /var/run/nginx.pid;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+                    '$status $body_bytes_sent "$http_referer" '
+                    '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log /var/log/nginx/access.log main;
+
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 65;
+    gzip on;
+    gzip_vary on;
+    gzip_min_length 1024;
+    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;
+
+    # Security headers
+    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 "no-referrer-when-downgrade" always;
+
+    # Rate limiting
+    limit_req_zone $binary_remote_addr zone=general:10m rate=10r/s;
+    limit_req_zone $binary_remote_addr zone=auth:10m rate=5r/m;
+
+    include /etc/nginx/sites-enabled/*.conf;
+}

nginx/nginx.conf.example

@@ -0,0 +1,94 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+
+    # Gzip compression
+    gzip on;
+    gzip_types text/plain text/css text/xml text/javascript application/javascript application/json;
+
+    # Rate limiting
+    limit_req_zone $binary_remote_addr zone=general:10m rate=10r/s;
+    limit_req_zone $binary_remote_addr zone=auth:10m rate=5r/m;
+
+    server {
+        listen 80;
+        server_name your-domain.com www.your-domain.com;
+
+        # Let's Encrypt challenge
+        location /.well-known/acme-challenge/ {
+            root /var/www/certbot;
+        }
+
+        # Redirect to HTTPS
+        location / {
+            return 301 https://$host$request_uri;
+        }
+    }
+
+    server {
+        listen 443 ssl http2;
+        server_name your-domain.com www.your-domain.com;
+
+        # SSL configuration
+        ssl_certificate /etc/letsencrypt/live/your-domain.com/fullchain.pem;
+        ssl_certificate_key /etc/letsencrypt/live/your-domain.com/privkey.pem;
+        
+        # Modern SSL configuration
+        ssl_protocols TLSv1.2 TLSv1.3;
+        ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
+        ssl_prefer_server_ciphers off;
+
+        # API proxy
+        location /api {
+            proxy_pass http://backend:3000;
+            proxy_http_version 1.1;
+            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;
+            proxy_cache_bypass $http_upgrade;
+            
+            # Rate limiting for API
+            limit_req zone=general burst=20 nodelay;
+        }
+
+        # Auth endpoints with stricter rate limiting
+        location /api/auth {
+            proxy_pass http://backend:3000;
+            proxy_http_version 1.1;
+            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;
+            
+            # Strict rate limiting for auth
+            limit_req zone=auth burst=5 nodelay;
+        }
+
+        # Static files
+        location / {
+            proxy_pass http://frontend:80;
+            proxy_http_version 1.1;
+            proxy_set_header Host $host;
+            proxy_cache_bypass $http_upgrade;
+        }
+
+        # Security headers for static content
+        location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
+            proxy_pass http://frontend:80;
+            expires 1y;
+            add_header Cache-Control "public, immutable";
+        }
+    }
+}