Download Squad to the rescue! The popular and useful downloads blog from Weblogs Inc. posted about a utility that can help you monitor your own network.
Wireshark is a free network protocol analyzer that’s available for Windows, Mac OS X, Linux, Solaris, FreeBSD and many others. Download Wireshark here.
Wireshark is long since well-known to networking professionals, perhaps under its previous name, “Ethereal.”
Sue says that Vint Cerf wowed ‘em at SHARKFEST. No shock there — the “father of the Internet” is well-known for that sort of thing.
In his post on Download Squad, Ian Dumych also links to a white paper posted by the Electronic Frontier Foundation, Detecting packet injection: a guide to observing packet spoofing by ISPs. Check in there if you want to learn more about the practice and how monitoring your own connection can help others.