I also came across the following what will completely drop Nginx server and PHP / ASP.NET etc Powered by headers. http { more_clear_headers 'Server'; more_clear_headers 'X-Powered-By'; http://wiki.nginx.org/HttpHeadersMoreModule#more_clear_headers Posted at Nginx Forum: http://forum.nginx.org/read.php?2,254125,254126#msg-254126