Microsoft just released version 3 of their free network monitoring tool.
Here are some of the new features:
- A completely new user interface
- Real time capture and display of frames
- Simultaneous capture on multiple network adapters
- Multiple simultaneous capture sessions
- Network conversations and a tree view displaying frames by conversation
- A new script-based protocol parser language, and script-based parsers
- Support for Vista/Windows XP/Windows Server 2003
- Support for 32bit and 64bit platforms
Network Monitor 3 is available from Microsoft Connect.