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I have WinXP with two connections (e.g. A and B).

What is the easiest way to make WinXP act as gateway to B for one and only one given computer (IP) from A?

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The easiest way may be to just assign static IPs on both ends (A & B) with a very restrictive subnet mask (e.g. & with a net mask of

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But I need to comunicate with other computers in the network... – Timofey Gorshkov Sep 8 '11 at 6:36
You did not elaborate that there are additional systems on the second connection. The same approach can be used to add a route on the forwarding system between the two networks (if the systems is setup to forward packets between its interfaces - e.g. route). – user48838 Sep 8 '11 at 7:07

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