php防止网站被攻击方法
发布时间：2022-02-10 21:43:15 所属栏目：PHP教程 来源：互联网
导读：最近网站经常被攻击,后来想到了一个利用php来防止网站受攻击的办法,下面是我的代码,代码不是最好的,根据自己的需求来做,下面来看看我的代码. /* *网站防ip攻击代码(anti-ip attack code website)2010-11-20,ver2.0 *mydalle.com anti-refresh mechanism *d
|
最近网站经常被攻击,后来想到了一个利用php来防止网站受攻击的办法,下面是我的代码,代码不是最好的,根据自己的需求来做,下面来看看我的代码. /* *网站防ip攻击代码(anti-ip attack code website)2010-11-20,ver2.0 *mydalle.com anti-refresh mechanism *design by www.Cuoxin.com */ //查询禁止ip $ip =$_server['remote_addr']; $fileht=".htaccess2"; if(!file_exists($fileht))file_put_contents($fileht,""); $filehtarr=@file($fileht); if(in_array($ip."rn",$filehtarr))die("warning:"." "."your ip address are forbided by mydalle.com anti-refresh mechanism, if you have any question pls emill to shop@mydalle.com! (mydalle.com anti-refresh mechanism is to enable users to have a good shipping services, but there maybe some inevitable network problems in your ip address, so that you can mail to us to solve.)"); //加入禁止ip $time=time(); $fileforbid="log/forbidchk.dat"; if(file_exists($fileforbid)) { if($time-filemtime($fileforbid)>30)unlink($fileforbid); else{ $fileforbidarr=@file($fileforbid); if($ip==substr($fileforbidarr[0],0,strlen($ip))) { if($time-substr($fileforbidarr[1],0,strlen($time))>120)unlink($fileforbid); elseif($fileforbidarr[2]>120){file_put_contents($fileht,$ip."rn",file_append);unlink($fileforbid);} else{$fileforbidarr[2]++;file_put_contents($fileforbid,$fileforbidarr);} } } } //防刷新 $str=""; $file="log/ipdate.dat"; if(!file_exists("log")&&!is_dir("log"))mkdir("log",0777); if(!file_exists($file))file_put_contents($file,""); $allowtime = 60;//防刷新时间 $allownum=5;//防刷新次数 $uri=$_server['request_uri']; $checkip=md5($ip); $checkuri=md5($uri); $yesno=true; $ipdate=@file($file); foreach($ipdate as $k=>$v) { $iptem=substr($v,0,32); $uritem=substr($v,32,32); $timetem=substr($v,64,10); $numtem=substr($v,74); if($time-$timetem<$allowtime){ if($iptem!=$checkip)$str.=$v; else{ $yesno=false; if($uritem!=$checkuri)$str.=$iptem.$checkuri.$time."1rn"; elseif($numtem<$allownum)$str.=$iptem.$uritem.$timetem.($numtem+1)."rn"; else { if(!file_exists($fileforbid)){$addforbidarr=array($ip."rn",time()."rn",1);file_put_contents($fileforbid,$addforbidarr);} file_put_contents("log/forbided_ip.log",$ip."--".date("y-m-d h:i:s",time())."--".$uri."rn",file_append); $timepass=$timetem+$allowtime-$time; die("warning:"." "."pls don't refresh too frequently, and wait for ".$timepass." seconds to continue, if not your ip address will be forbided automatic by mydalle.com anti-refresh mechanism! (mydalle.com anti-refresh mechanism is to enable users to have a good shipping services, but there maybe some inevitable network problems in your ip address, so that you can mail to us to solve.)"); } //开源代码Cuoxin.com } } } if($yesno) $str.=$checkip.$checkuri.$time."1rn"; file_put_contents($file,$str); ?> （编辑：广州站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
