This article was previously published under Q261327
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Network Monitor (Netmon.exe) is a packet-analyzing utility which is used primarily to troubleshoot network communication problems. Network Monitor comes with parsers which parse some of the most common protocols. However, as new standards and implementations evolve, there will be certain protocols for which Netmon does not contain parsers.
Parsers for these protocols can be written by individuals, or, some of these parsers are written by other companies and can be found on the Internet. In addition, some of the additional parsers are included in the Microsoft Resource kits.
The latest parsers usually include an autoinstall feature. Thus, all that is required is for the end user to place a copy of the parser .dll into the Parser subdirectory located under the Netmon installation directory. The location of this directory depends on the folder chosen during installation.
When installing an older parser that does not include the autoinstall feature, you need to modify a few files. These include the Parser.ini in the Netmon directory, and the Tcpip.ini file, located under the Parser directory. The necessary modifications for these files should be provided in the form of a Readme.txt file or a similar file included with the parser.