Free (GPL) Packet Sniffer for Windows
"Packetyzer is a network protocol analyzer for Windows, also know as a
packet sniffer. It is based on the Ethereal project, but provides a
native Windows GUI. Packetyzer can capture from virtually any network
adapter and supports many advanced features."
http://sourceforge.net/projects/packetyzer/
Good GUI, easy to use. Good filters. Excellent program, and a great price - Free!
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