curl发出请求的文件fake_ip.php:

代码

复制代码 代码如下:

<?php

$ch = curl_init();

$url = "http://localhost/target_ip.php";

$header = array(

'CLIENT-IP:58.68.44.61',

'X-FORWARDED-FOR:58.68.44.61',

);

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HTTPHEADER, $header);

curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);

$page_content = curl_exec($ch);

curl_close($ch);

echo $page_content;

?>

请求的目标文件target_ip.php:

复制代码 代码如下:

<?php

echo getenv('HTTP_CLIENT_IP');

echo getenv('HTTP_X_FORWARDED_FOR');

echo getenv('REMOTE_ADDR');

?>

目标文件target_ip里面的IP打印顺序是目前很多开源系统的IP获取顺序

访问fake_ip.php,看到结果:

58.68.44.61

58.68.44.61

127.0.0.1

实例

CURL确实很强悍，可以伪造IP和来源。

1.php 请求 2.php 。

1.php代码：

复制代码 代码如下:

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "http://localhost/2.php");

curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:8.8.8.8', 'CLIENT-IP:8.8.8.8')); //构造IP

curl_setopt($ch, CURLOPT_REFERER, "http://www.jb51.net/ "); //构造来路

curl_setopt($ch, CURLOPT_HEADER, 1);

$out = curl_exec($ch);

curl_close($ch);

2.php代码如下：

复制代码 代码如下:

function getClientIp() {

if (!empty($_SERVER["HTTP_CLIENT_IP"]))

$ip = $_SERVER["HTTP_CLIENT_IP"];

else if (!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))

$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];

else if (!empty($_SERVER["REMOTE_ADDR"]))

$ip = $_SERVER["REMOTE_ADDR"];

else

$ip = "err";

return $ip;

}

echo "IP: " . getClientIp() . "";

echo "referer: " . $_SERVER["HTTP_REFERER"];

伪造成功，这是不是给“刷票”的朋友提供了很好的换IP的方案