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Re: public IP

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: public IP
From: Allan Kent <allan at lodestone dot co dot za>
Date: Tue, 31 May 2005 10:38:10 +0200
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <3454BD50-AD28-40DF-B679-53A420935E06 at belle-nuit dot com> <2A6B728A-4E51-4C27-A578-DDEBB6F82035 at comcast dot net>
George M. Ellenburg wrote:

There's also http://checkip.dyndns.org/ but there's no guarantee that it will always be available.

or work correctly. Our network setup is probably not standard, but we rent office space and a network point from a larger company. They have their own firewall/router setup for their network, and if you use one of their machines to check the external IP you will get the external IP of their router (as expected). We have our own firewall/router on their network with all our machines behind it - we all gateway through that machine which in turns uses their router to give us an internet connection. dyndns reports my external IP as the IP of our firewall _within their network_. What I suspect is being reported is the HTTP_X_FORWARDED_FOR apache server variable and not REMOTE_ADDR (which would return the correct real external IP)

Allan
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