PHP使用curl伪造IP地址和header信息

2016/01/23 54019

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curl虽然功能强大，但是只能伪造$_SERVER["HTTP_X_FORWARDED_FOR"]，对于大多数IP地址检测程序来说，$_SERVER["REMOTE_ADDR"]很难被伪造：

首先是client.php的代码

01 $headers['CLIENT-IP'] = '202.103.229.40'; 
02 $headers['X-FORWARDED-FOR'] = '202.103.229.40';
03   
04 $headerArr = array(); 
05 foreach( $headers as $n => $v ) { 
06     $headerArr[] = $n .':' . $v;  
07 }
08   
09 ob_start();
10 $ch = curl_init();
11 curl_setopt ($ch, CURLOPT_URL, "http://localhost/curl/server.php");
12 curl_setopt ($ch, CURLOPT_HTTPHEADER , $headerArr );  //构造IP
13 curl_setopt ($ch, CURLOPT_REFERER, "http://www.163.com/ ");   //构造来路
14 curl_setopt( $ch, CURLOPT_HEADER, 1);
15   
16 curl_exec($ch);
17 curl_close ($ch);
18 $out = ob_get_contents();
19 ob_clean();
20   
21 echo $out;

然后是server.php

01 function GetIP(){
02     if(!emptyempty($_SERVER["HTTP_CLIENT_IP"]))
03         $cip = $_SERVER["HTTP_CLIENT_IP"];
04     else if(!emptyempty($_SERVER["HTTP_X_FORWARDED_FOR"]))
05         $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
06     else if(!emptyempty($_SERVER["REMOTE_ADDR"]))
07         $cip = $_SERVER["REMOTE_ADDR"];
08     else
09     $cip = "无法获取！";
10     return $cip;
11 }
12 echo "<br>访问IP: ".GetIP()."<br>";
13 echo "<br>访问来路: ".$_SERVER["HTTP_REFERER"];