How to use Windows XP as a router

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Just install an additional network card in the box and then configure the registry setting below and your XP box becomes able to route (forward) IP packets from one interface to another.

Open Regedit and navigate to:


Find the following registry value:


Set this value to 1 to enable IP routing on the box.

After doing this, reboot the machine. You may also need to disable Windows Firewall on the machine.

Editor note: It is important to have the Routing and RAS service running, else no routing takes place.
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