Nginx Security Header Template

app.conf

server_tokens off;

server {
  listen 80 default_server;
  listen [::]:80 default_server;

  server_name le3.empeje.org;

  location /.well-known/acme-challenge/ {
    root /var/www/letsencrypt;
  }

  location / {
    return 301 https://$host$request_uri;
  }
}

server {
  listen 443 ssl deferred http2;
  listen [::]:443 ssl deferred http2;

  ssl_certificate certs/live/le3.empeje.org/fullchain.pem;
  ssl_certificate_key certs/live/le3.empeje.org/privkey.pem;

  ssl_session_cache shared:SSL:50m;
  ssl_session_timeout 1d;
  ssl_session_tickets off;

  ssl_prefer_server_ciphers on;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
  resolver 8.8.8.8 8.8.4.4;
  ssl_stapling on;
  ssl_stapling_verify on;
  ssl_trusted_certificate certs/live/le3.empeje.org/fullchain.pem;
  server_name le3.empeje.org;

  add_header Strict-Transport-Security "max-age=31536000; includeSubdomains; preload";
  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 Content-Security-Policy "default-src 'self' https://google.com https://youtube.com https://facebook.com https://fonts.google.com https://fonts.googleapis.com https://ajax.googleapis.com https://www.google-analytics.com https://cdnjs.cloudflare.com https://code.jquery.com https://connect.facebook.net https://s.imgur.com https://imgur.com https://i.imgur.com https://500px.com https://drscdn.500px.org https://www.reddit.com https://www.flickr.com https://c1.staticflickr.com https://maxcdn.bootstrapcdn.com http://code.ionicframework.com https://cdn.fontawesome.com/;
  script-src 'self';
  style-src 'self';
  img-src 'self' data:;
  connect-src 'self';
  font-src 'self';
  object-src 'none';
  media-src 'self';
  form-action 'self';
  frame-ancestors 'self';" always;
  add_header 'Referrer-Policy' 'no-referrer';
  proxy_hide_header X-Powered-By;
  server_tokens off;

  location / {
    proxy_pass http://le3.empeje.org;
  }
}