Nginx CDN contenido estático

# Servidor principal que se hace cargo de las peticiones
server {
    listen 111.222.333.444:80;
    server_name cdnc1.dng.pw cdnc2.dng.pw cdnc3.dng.pw;
    root /ruta/sitio/web/original/html;

    access_log  /ruta/sitio/web/original/logs/access_cndc.log;
    error_log  /ruta/sitio/web/original/logs/error_cdnc.log;

    charset UTF-8;

    location ~* \.(jpg|jpeg|gif|png|ico) {
        add_header Pragma "public";
        add_header Cache-Control "max-age=7776000, public, must-revalidate, proxy-revalidate"; # Cache de 3 meses, en segundos
        add_header X-Powered-By "CDN Images CloudFlare DNG/1.0";
    }

    # Habilitamos compresión gzip
    gzip on;
    gzip_types text/css text/x-component application/x-javascript application/javascript text/javascript text/x-js text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon;

    location ~* \.js$ {
        types {}
        default_type application/x-javascript;
        add_header Vary "Accept-Encoding";
        add_header Pragma "public";
        add_header Cache-Control "max-age=7776000, public, must-revalidate, proxy-revalidate"; # Cache de 3 meses, en segundos
        add_header X-Powered-By "CDN Js CloudFlare DNG/1.0";
    }

    location ~* \.css$ {
        types {}
        default_type text/css;
        add_header Vary "Accept-Encoding";
        add_header Pragma "public";
        add_header Cache-Control "max-age=7776000, public, must-revalidate, proxy-revalidate"; # Cache de 3 meses, en segundos
        add_header X-Powered-By "CDN Css CloudFlare DNG/1.0";
    }

    location  / {
        deny all;
    }
}