I do not know of any freeware tools for Windows 2000 that allow you to audit or collect stats on IP network packets. I did find a listing for Socket Workbench 3.1, which might do what you are looking for. The download is available at http://www.tucows.com/preview/216126.html. This is an evaluation copy, and the real product is not free. I have not used the product and make no claim as to how good it is or is not.
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