Microsoft KB Archive/154674

= PPTP Registry Entries =

Article ID: 154674

Article Last Modified on 2/27/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q154674





SUMMARY
The following is a list of user-definable registry entries for PPTP, followed by explanations of those entries.



MORE INFORMATION
The following PPTP registry values are located in the following registry key:

 

By default, the following PPTP registry values are not created.

    Data type = REG_DWORD Range = 0 or 1 Default = 0

Set this parameter to 1 to force the PPTP protocol to accept calls only from IP addresses listed in the PeerClientIPAddresses registry value. If AuthenticateIncomingCalls is set to 1 and there are no addresses in PeerClientIPAddresses, then no clients can connect.    Data type = REG_MULTI_SZ</li> Range = the format is a valid IP address xx.xx.xx.xx</li></ul>

The server only accepts PPTP calls from a client that has an IP address in the list of IP addresses included in this registry value. This value is only relevant if the   registry value is set to 1.</li></ul>

The following PPTP registry values are located in the following registry key, where <AdapterName> is the name of a network adapter:

 

    Data type = REG_DWORD</li> Range = 0 or 1</li> Default =1</li></ul>

When PPTP is installed, a default route is created for each LAN adapter. For example, if you have two LAN adapters - one for Internet access and one for the corporate LAN, you have a default routes for each adapter. This value disables the default route on the corporate LAN adapter.</li>    Key =  </li> Data type = REG_DWORD</li> Range = 0 or 1</li> Default = 0</li></ul>

This parameter controls whether PPTP filtering is enabled on a per-adapter basis. If this value is set to 1, then the adapter only accepts PPTP connections. This reduces exposure to attacks if the adapter is connected to a public network such as the Internet.</li>   <ul> <li>Key =  </li> <li>Data type = REG_DWORD</li> <li>Range = 0 to 0xFFFFFFFF</li> <li>Default = 9 (Windows NT 4.0) or 5 (Windows 2000)</li></ul>

This parameter controls the number of times that a PPTP packet is retransmitted if it is not acknowledged. The value is set higher than the default   value to prevent dead gateway detection from occurring on congested Internet links.</li></ul>

Additional query words: prodnt sur

Keywords: kbnetwork KB154674

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