Wireshark 1.2.3

Wireshark is the world's foremost network protocol analyzer, and is the de facto standard across many industries and educational institutions.
* Deep inspection of hundreds of protocols, with more being added all the time
* Live capture and offline analysis
* Standard three-pane packet browser
* Multi-platform: Runs on Windows, Linux, OS X, Solaris, FreeBSD, NetBSD, and many others
* Captured