$crlf=chr(13).chr(10);$itime=3; //Minimum number of seconds between one-visitor visits$imaxvisit=10; //Maximum visits in $itime x $imaxvisits seconds$ipenalty=($itime * $imaxvisit); //Minutes for waitting$iplogdir="./NervaGuard/LogDeAtacks/";$to = 'gunz@kaosgunz.com';$headers = 'From: Nerva Guard - Proteção DDOS' . "\r\n";$subject = "Atenção. Possivel Atack DDos detectado em $today:$min:$sec"; //Warning Messages:$message1='<font color="red">Nerva Guard - Anti DDOS</font><br>';$message2='Por favor aguarde ... ';$message3=' segundos para voltar ao nosso site.<br>';$message4='<font color="blue">Você está atacando nosso site com DDOS.</font><br>Se você for humano troque de ip.<br>Seu IP foi banido do nosso servidor <b>'.$_SERVER["REMOTE_ADDR"].' </b>por ataque de DDOS.';//---------------------- FIM DA INICIAÇÃO --------------------------------------- //Get file time:$ipfile=substr(md5($_SERVER["REMOTE_ADDR"]),-3); // -3 means 4096 possible files$oldtime=0;if (file_exists($iplogdir.$ipfile)) $oldtime=filemtime($iplogdir.$ipfile);//Update times:$time=time();if ($oldtime<$time) $oldtime=$time;$newtime=$oldtime+$itime;// Check human or bot:if ($newtime>=$time+$itime*$imaxvisit){ // To block visitor: touch($iplogdir.$ipfile,$time+$itime*($imaxvisit-1)+$ipenalty); header("HTTP/1.0 503 Service Temporarily Unavailable"); header("Connection: close"); header("Content-Type: text/html"); echo '<html><head><title>Nerva Guard - ANTI DDOS</title></head><body><p align="center"><strong>' .$message1.'</strong>'.$br; echo $message2.$ipenalty.$message3.$message4.$message6.'</p>
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</body></html>'.$crlf; // Mailing Warning Message to Site Admin { @mail($to, $subject, $message5, $headers); } // logging: $fp=@fopen($iplogdir.$iplogfile,"a"); if ($fp!==FALSE) { $useragent='<unknown user agent>'; if (isset($_SERVER["HTTP_USER_AGENT"])) $useragent=$_SERVER["HTTP_USER_AGENT"]; @fputs($fp,$_SERVER["REMOTE_ADDR"].' on '.date("D, d M Y, H:i:s").' as '.$useragent.$crlf); } @fclose($fp); exit();}//Modify file time://touch($iplogdir.$ipfile,$newtime);?><?php