diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index 1acd6fd..61c2db0 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -5,6 +5,16 @@ 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 Referrer-Policy "no-referrer" always;
+    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
+    # CSP разрешает только свои ресурсы + Google Fonts + ws к backend.
+    # self + 'unsafe-inline' для стилей нужен Vite-сборке. noVNC загружается
+    # как npm-пакет, поэтому внешние CDN больше не нужны.
+    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data:; connect-src 'self' ws: wss:; frame-ancestors 'self';" always;
+
     location / {
         try_files $uri /index.html;
     }
@@ -13,8 +23,13 @@ server {
         proxy_pass http://backend:8000/;
         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_http_version 1.1;
+        # Для websocket-прокси VNC-консоли.
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";
+        proxy_read_timeout 86400s;
+        proxy_send_timeout 86400s;
     }
 }