How get the external ip address of proxy (or nat) server with AppServer

Subject contains the basic question.
I need get ip adres (not in local net, but external) of client!
Wish with AppServer only. Becoze with java it less accurate.
Or I was wrong?
help me please!
Edited by: user13325288 on 29.06.2010 16:06
Edited by: user13325288 on 29.06.2010 16:07

Thank you, MLBrown. I have configured webutil and it works. But I read that the function webutil_clientinfo.Get_IP_Address; return address on the LAN. Address of network card in my local network. But what if I need to get the ip address if I connect through multiple networks or via the Internet??
I need to AppServer worked with an external ip address of the server, through which I connect to the AppServer
Edited by: Ihavoker on 30.06.2010 9:55

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* @jeppojeps
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