Microsoft KB Archive/230082

= How To Enable TCP/IP Forwarding in Windows 2000 =

Article ID: 230082

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Datacenter Server

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This article was previously published under Q230082



IN THIS TASK
SUMMARY
 * Enabling TCP/IP Forwarding

REFERENCES

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SUMMARY
Transmission Control Protocol/Internet Protocol (TCP/IP) forwarding is disabled by default in Windows 2000. This article describes how to enable TCP/IP forwarding on a Windows 2000-based computer. WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

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Enabling TCP/IP Forwarding
 Use Registry Editor (Regedt32.exe) to view the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

 Set the following registry value:

Value Name: IPEnableRouter

Value type: REG_DWORD

Value Data: 1

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

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