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Samba HowTo Guide
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The Windows Network Monitor

For tracing things on Microsoft Windows NT, Network Monitor (aka Netmon) is available on Microsoft Developer Network CDs, the Windows NT Server install CD, and the SMS CDs. The version of Netmon that ships with SMS allows for dumping packets between any two computers (i.e., placing the network interface in promiscuous mode). The version on the NT Server install CD will only allow monitoring of network traffic directed to the local NT box and broadcasts on the local subnet. Be aware that Ethereal can read and write Netmon formatted files.

Installing Network Monitor on an NT Workstation

Installing Netmon on an NT workstation requires a couple of steps. The following are instructions for installing Netmon V4.00.349, which comes with Microsoft Windows NT Server 4.0, on Microsoft Windows NT Workstation 4.0. The process should be similar for other versions of Windows NT version of Netmon. You will need both the Microsoft Windows NT Server 4.0 Install CD and the Workstation 4.0 Install CD.

Initially you will need to install Network Monitor Tools and Agent on the NT Server to do this:

  • Go to Start -> Settings -> Control Panel -> Network -> Services -> Add.

  • Select the Network Monitor Tools and Agent and click on OK.

  • Click on OK on the Network Control Panel.

  • Insert the Windows NT Server 4.0 install CD when prompted.

At this point, the Netmon files should exist in %SYSTEMROOT%\System32\netmon\*.*. Two subdirectories exist as well: parsers\, which contains the necessary DLLs for parsing the Netmon packet dump, and captures\.

To install the Netmon tools on an NT Workstation, you will first need to install the Network Monitor Agent from the Workstation install CD.

  • Go to Start -> Settings -> Control Panel -> Network -> Services -> Add.

  • Select the Network Monitor Agent, click on OK.

  • Click on OK in the Network Control Panel.

  • Insert the Windows NT Workstation 4.0 install CD when prompted.

Now copy the files from the NT Server in %SYSTEMROOT%\System32\netmon to %SYSTEMROOT%\System32\netmon on the workstation and set permissions as you deem appropriate for your site. You will need administrative rights on the NT box to run Netmon.

Installing Network Monitor on Windows 9x/Me

To install Netmon on Windows 9x/Me, install the Network Monitor Agent from the Windows 9x/Me CD (\admin\nettools\netmon). There is a readme file included with the Netmon driver files on the CD if you need information on how to do this. Copy the files from a working Netmon installation.

Samba HowTo Guide
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