PHP cc attack defense and fast refresh code
Release： 2016-07-25 08:54:24
Original
1134 people have browsed it
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- //Exit the proxy IP directly
- empty($_SERVER['HTTP_VIA']) or exit('Access Denied');
- //Prevent quick refresh
- session_start();
- $seconds = '3'; //Time period [seconds]
- $refresh = '5'; //Number of refreshes
- //Set monitoring variables
- $cur_time = time();
- if(isset($_SESSION['last_time'] )){
- $_SESSION['refresh_times'] += 1;
- }else{
- $_SESSION['refresh_times'] = 1;
- $_SESSION['last_time'] = $cur_time;
- }
- //Process monitoring results
- if($cur_time - $_SESSION['last_time'] < $seconds){
- if($_SESSION['refresh_times'] >= $refresh){
- //Jump to attacker server address
- header(sprintf ('Location:%s', 'http://127.0.0.1'));
- exit('Access Denied');
- }
- }else{
- $_SESSION['refresh_times'] = 0;
- $_SESSION[ 'last_time'] = $cur_time;
- }
- ?>
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