http

{

   .....

    server_tokens on;

    server_info on;

    server_tag bass;

    reset_timedout_connection       on;

    keepalive_timeout               120;

    keepalive_requests              100;

    sendfile on;

    tcp_nodelay on;

    tcp_nopush  off;

 .....

}

    server_tokens off;

    server_info off;

    server_tag off;