請教電腦達人，如何禁止代理IP訪問?

[runman]

小弟有個DISCUZ論壇，是PHP的，
想禁止代理IP訪問論壇，有沒有達人給小弟指點一下？

我在網上找到一段禁止代理訪問的代碼，可不知道效果如何，也不知道該加在哪裏。

if ($is_allow_proxy==no)
{
$remote_ip=$_SERVER['REMOTE_ADDR']; 
function getip() { 
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) 
{$realip=$_SERVER['HTTP_X_FORWARDED_FOR']; 
}
elseif (isset($_SERVER['HTTP_CLIENT_IP'])){ 
$realip=$_SERVER['HTTP_CLIENT_IP']; 
}
else 
{
$realip=$_SERVER['REMOTE_ADDR']; 
} 
return $realip;
}
($remote_ip!==getip()) //如果使用了代理
}
?>
<script language=vbscript>
location.href="转向地址"
</script>
<?
exit;
}
else{
setcookie("proxyyz","yes",time()+864000,"/",".domain.com",0);
}
}
?>

有沒有達人知道更好的禁止代理訪問的代碼？

[alextung]

如果你對apache的mod_rewrite有興趣的話，
可以研究看看~

[some]

very good script, but you lose an important variable,
you need to add on line

$is_allow_proxy = "no";

before this section:

if ($is_allow_proxy==no)
{
$remote_ip=$_SERVER['REMOTE_ADDR']; 
function getip() { 
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) 
{$realip=$_SERVER['HTTP_X_FORWARDED_FOR']; 
}
elseif (isset($_SERVER['HTTP_CLIENT_IP'])){ 
$realip=$_SERVER['HTTP_CLIENT_IP']; 
}
else 
{
$realip=$_SERVER['REMOTE_ADDR']; 
} 
return $realip;
}
($remote_ip!==getip()) //如果使用了代理
}
?>

those sections should be added in the top part of index.php

<script language=vbscript>
location.href="转向地址"
</script>
<?
exit;
}
else{
setcookie("proxyyz","yes",time()+864000,"/",".domain.com",0);
}
}
?>

this section should be added to the top section of page, between <head> and </head>