Knowledge Base

How to Enable PPTP Port for Network Monitor

Article ID: 164601

Article Last Modified on 11/1/2006

Microsoft Windows NT Workstation 4.0 Developer Edition
Microsoft Windows NT Server 4.0 Standard Edition
Microsoft Windows 95

This article was previously published under Q164601

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:

In the parsers directory created by Network Monitor, edit the Tcpip.ini file.
In this file, find the [TCP_HandoffSet] section.
At the bottom of this section, find:
5678 = PPTP
Change 5678 to 1723.
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: kbhowto kbnetwork kbusage KB164601