Microsoft KB Archive/258544

= How to Configure Proxy Packet Filters for Terminal Server Access on the Same Server =

Article ID: 258544

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Proxy Server 2.0 Standard Edition

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This article was previously published under Q258544



SUMMARY
When you install Microsoft Proxy Server 2.0 on a computer running Windows NT 4.0 Terminal Server Edition or Windows 2000 Server with the Terminal Server component and packet filtering enabled, you need to create a custom filter to allow access to the Terminal Server service. This article outlines the packet filter that you need to enable Proxy Server to allow Terminal Server clients to create a Terminal Server session using the RDP protocol.



MORE INFORMATION
NOTE: The steps to follow only allow access to Terminal Services running on the Proxy Server itself. These steps will not allow access to a Terminal Server behind the Proxy Server.

The Terminal Server client tries to use TCP port 3389 as a destination port when it attempts to connect to the Terminal Server. Configure Proxy Server to allow a client on the Internet to connect to the server on TCP port 3389 from a random source port:  Open Internet Service Manager. Right-click Web Proxy, and then click Properties. Click Security. On the Packet Filters tab, click Add.  Click Custom Filter, and then change the values to match the following table:   Setting       Value ---  Protocol ID   TCP Direction    Both Local Port   Fixed Port: 3389 Remote Port  Any  Click OK, and then verify that the filter was added to the list of exceptions.</li> If the filter is successfully added to the list, close the Web proxy interface.</li></ol>

For additional information about ports and Microsoft services, click the article number below to view the article in the Microsoft Knowledge Base:

150543 WinNT, Terminal Server, and Exchange Services Use TCP/IP Ports

Additional query words: filter proxy terminal

Keywords: kbinfo kbnetwork KB258544

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