security hardening

infra/nginx.conf

@@ -4,6 +4,42 @@ server {
     root /usr/share/nginx/html;
     index index.html;
 
+    # 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 "strict-origin-when-cross-origin" always;
+    add_header Permissions-Policy "geolocation=(), microphone=(), camera=()" always;
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data:; media-src 'self'; connect-src 'self'; frame-ancestors 'none';" always;
+    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+
+    # Remove server version fingerprint
+    server_tokens off;
+
+    # Block dot files and hidden directories
+    location ~ /\. {
+        deny all;
+        return 404;
+    }
+
+    # Block tools directory
+    location ^~ /tools/ {
+        deny all;
+        return 404;
+    }
+
+    # Block sensitive file types
+    location ~* \.(env|log|sh|py|pyc|md|yml|yaml|conf|dockerfile|dockerignore|bak|backup|sql|key|pem|json|planning|cpanel)$ {
+        deny all;
+        return 404;
+    }
+
+    # Block README and Dockerfile at root
+    location ~* ^/(README|Dockerfile|docker-compose\.yml|\.cpanel\.yml)$ {
+        deny all;
+        return 404;
+    }
+
     location / {
         try_files $uri $uri/ $uri/index.html =404;
     }
@@ -11,16 +47,8 @@ server {
     error_page 404 /404.html;
     error_page 500 502 503 504 /500.html;
 
-    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf)$ {
+    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|webp|woff|woff2|ttf|mp4|webm)$ {
         expires 30d;
         add_header Cache-Control "public, immutable";
     }
-
-    location ~ /\. {
-        deny all;
-    }
-
-    location ~* \.(env|Dockerfile|dockerignore|yml|yaml|md|planning)$ {
-        deny all;
-    }
 }