PHP help needed

Joeydabomb · 03-07-2007, 02:15 PM

Is it possible to find a users ip if they use a proxy?

Say the sign up on a site using proxies to avoid ip bans... would you be able to find there real ip and ban them?

Peter · 03-07-2007, 06:45 PM

if the person is using a proxy then it is possible to check their ip using $_SERVER['HTTP_X_FORWARDED_FOR']. This only contains an ip if a proxy is used.

However anonymous proxies for example do not use the necessary header so $_SERVER['HTTP_X_FORWARDED_FOR'] would not contain anything and unfortunately there is no other way of checking using php.

BillyConnite · 03-07-2007, 07:45 PM

Originally Posted by filth@flexiwebhost

if the person is using a proxy then it is possible to check their ip using $_SERVER['HTTP_X_FORWARDED_FOR']. This only contains an ip if a proxy is used.
????: NamePros.com http://www.namepros.com/programming/302324-resolved-php-help-needed.html

However anonymous proxies for example do not use the necessary header so $_SERVER['HTTP_X_FORWARDED_FOR'] would not contain anything and unfortunately there is no other way of checking using php.

What Peter said

.

However It is possible to ban the proxy itself. If you notice a large amount of traffic running to or from one IP, this could be a proxy being used by multiple people to view your site.

03-07-2007, 02:15 PM	THREAD STARTER #1 (permalink)
Joeydabomb NamePros Member Join Date: Oct 2004 Location: Wales Posts: 90	PHP help needed Is it possible to find a users ip if they use a proxy? Say the sign up on a site using proxies to avoid ip bans... would you be able to find there real ip and ban them?

03-07-2007, 06:45 PM	#2 (permalink)
Peter NamePros Expert Join Date: Nov 2003 Location: Scotland Posts: 5,069	if the person is using a proxy then it is possible to check their ip using $_SERVER['HTTP_X_FORWARDED_FOR']. This only contains an ip if a proxy is used. However anonymous proxies for example do not use the necessary header so $_SERVER['HTTP_X_FORWARDED_FOR'] would not contain anything and unfortunately there is no other way of checking using php.

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