Ocular la versión de PHP X-Powered-By

Cambiar  a off la variable expose_php en el archivo php.ini.

Antes :

Server: nginx
Date: Sun, 14 Dec 2014 18:12:21 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
X-Powered-By: PHP/5.4.0
X-Pingback: https://aurlen.mx/w/xmlrpc.php
Link: <https://aurlen.mx/w/>; rel=shortlink
Content-Encoding: gzip
200 OK

 

Cambiar la variable a off:

 

;;;;;;;;;;;;;;;;;
; Miscellaneous ;
;;;;;;;;;;;;;;;;;

; Decides whether PHP may expose the fact that it is installed on the server
; (e.g. by adding its signature to the Web server header).  It is no security
; threat in any way, but it makes it possible to determine whether you use PHP
; on your server or not.
; http://php.net/expose-php
expose_php = Off

 

Reiniciar el servidor web,