PHP中用CURL伪造IP来源的方法

2. $ch = curl_init();
3. curl_setopt($ch, CURLOPT_URL, "http://localhost/2.php");
4. curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:8.8.8.8', 'CLIENT-IP:8.8.8.8'));//IP
5. curl_setopt($ch, CURLOPT_REFERER, "http://bbs.it-home.org/ "); //来路
6. curl_setopt($ch, CURLOPT_HEADER, 1);
7. $out = curl_exec($ch);
8. curl_close($ch);

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2.文件 2.php

2. function getClientIp() {
3. if (!empty($_SERVER["HTTP_CLIENT_IP"]))
4. $ip = $_SERVER["HTTP_CLIENT_IP"];
5. else if (!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))
6. $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
7. else if (!empty($_SERVER["REMOTE_ADDR"]))
8. $ip = $_SERVER["REMOTE_ADDR"];
9. else
10. $ip = "err";
11. return $ip;
12. }
13. echo "IP: " . getClientIp() . "";
14. echo "referer: " . $_SERVER["HTTP_REFERER"];

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用1.php 请求 2.php，输出结果： IP：8.8.8.8 referer:http://bbs.it-home.org

伪造成功。