Microsoft Network Monitor
監控與分析網路封包
Network Monitor 3.4 is a protocol analyzer. It allows you to capture network traffic and view and analyze it. Microsoft is working on its successor, Microsoft Message Analyzer, and is making beta copies of that available from our Connect site. If you join that beta program you can try out Message Analyzer and provide feedback on it.
http://www.microsoft.com/en-us/download/details.aspx?id=4865