KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q164601: How to Enable PPTP Port for Network Monitor

Article: Q164601
Product(s): Microsoft Windows NT
Version(s): 4.0 1.2
Operating System(s): 
Keyword(s): kbnetwork kbusage
Last Modified: 08-AUG-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows NT Workstation version 4.0 
- Microsoft Windows NT Server version 4.0 
- Microsoft Windows 95 
-------------------------------------------------------------------------------

SUMMARY
=======

If you use Network Monitor in Systems Management Server version 1.2 or Network
Monitor from the Windows NT Server version 4.0 compact disc, you will not be
able to view Point-to-Point Tunneling Protocol (PPTP) or General Routing
Encapsulation (GRE) packets. At the time these products were released, it was
not known what port would be used for PPTP.

MORE INFORMATION
================

To view PPTP and GRE packets, follow these steps:

1. In the parsers directory created by Network Monitor, edit the Tcpip.ini file.

2. In this file, find the [TCP_HandoffSet] section.

3. At the bottom of this section, find:

  5678 = PPTP

4. Change 5678 to 1723.

5. Save the file.

When you run Network Monitor, you will now see PPTP session packets, and GRE
packets initiated by PPTP.

Additional query words: SMS netmon

======================================================================
Keywords          : kbnetwork kbusage 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWin95search kbZNotKeyword3
Version           : 4.0 1.2
Issue type        : kbhowto

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.