How to prevent Chinese kitchen knife back door leaking Webshell address

Source: Internet
Author: User

By local relay can be good to prevent the kitchen knife with backdoor steal Webshell. PHP code as shown below, the principle of self-thinking, do not understand, please leave a message

<?php $webshell = "";//change this to your shell address   $temp =$_post; $data = $temp;  $data = Http_build_query ($data);   $opts = Array ('   http ' = = Array (   ' method ' = ' + ' POST ',   ' header ' = ') ' content-type:application/ x-www-form-urlencoded\r\n ".   " Content-length: ". Strlen ($data). "\ r \ n",   ' content ' = $data));  $context = Stream_context_create ($opts);   $html = @file_get_contents ($webshell, False, $context); Send post  echo $html;    ? >

How to prevent Chinese kitchen knife back door leaking Webshell address

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