add_header X-Frame-Options "SAMEORIGIN";
add_header X-XSS-Protection "1; mode=block";
add_header Content-Security-Policy "default-src 'self';";

gzip on;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml+rss text/javascript;

upstream backend_hosts {
    server 10.0.0.1;
    server 10.0.0.2;
}

server {
    location / {
        proxy_pass http://backend_hosts;
    }
}