Using XP as a router

by Mitch Tulloch [Published on 29 March 2006 / Last Updated on 29 March 2006]

A cheap and easy way of using an XP box as a router.

A cheap and easy way of adding a router to your network is to use a surplus PC with Windows XP Professional installed on it. Just install an additional network card in the box and then configure the registry setting below and Presto! 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.

The Author — Mitch Tulloch

Mitch Tulloch is a widely recognized expert on Windows administration, networking, and security. He has been repeatedly awarded Most Valuable Professional (MVP) status by Microsoft for his outstanding contributions in supporting users who deploy and use Microsoft platforms, products and solutions. Mitch has published over two hundred articles on different IT websites and magazines, and he has written or contributed to almost two dozen books and is lead author for the Windows 7 Resource Kit from Microsoft Press. For more information, see .

Latest Contributions

Featured Links