How to Enable TCP/IP Forwarding in Windows XP

To enable TCP/IP forwarding, follow these steps:

1. Start Registry Editor (Regedit.exe).
2. In Registry Editor, locate the following registry key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

3. Set the following registry value:

   Value Name: IPEnableRouter
   Value type: REG_DWORD
   Value Data: 1

   A value of 1 enables TCP/IP forwarding for all network connections that are installed and used by this computer.

4. Quit Registry Editor.