It is possible that between you and the internet there is a proxy server. A proxy server will request content for you on your behalf, and return it for you. When it does this, the proxy will communicate with the site using its own IP address, but it should include a header "X-Forwarded-For"
I think the difference between the two sites (what ismyip vs showmyip) is that one site is taking into account the "X-Forwarded-For" HTTP header, and the other isnt.
So, the difference is: one of the ips is your proxy server, the other your real address.
Last edited by wimiadmin; 07-29-2009 at 08:57 AM..
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07-29-2009, 03:12 AM
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