有个朋友服务器遭受攻击,目前可以断定是CC攻击,所以提供个PHP防CC攻击代码。说的有点过分了,其实也就是防止快速刷新代码,对于那么多的伪造IP,这个也起不了多大作用。CC攻击,还真是个头疼的问题。直接上代码。
?php/** * @author 天涯 * mail@phpha.com *///代理IP直接退出empty($_SERVER[HTTP_VIA]) or exit(Access Denied);//防止快速刷新session_start();$seconds = 3; //时间段[秒]$refresh = 5; //刷新次数//设置监控变量$cur_time = time();if(isset($_SESSION[last_time])){$_SESSION[refresh_times] += 1;}else{$_SESSION[refresh_times] = 1;$_SESSION[last_time] = $cur_time;}//处理监控结果if($cur_time - $_SESSION[last_time] $seconds){if($_SESSION[refresh_times] = $refresh){//跳转至攻击者服务器地址header(sprintf(Location:%s, http://127.0.0.1));exit(Access Denied);}}else{$_SESSION[refresh_times] = 0;$_SESSION[last_time] = $cur_time;}?