Open source network analyzer. Another post Ethernet II vs 802.3 has some wireshark links to packets like CDP and ARP? Here are some more links about Wirshark and I will use this post to keep track of the links Laura Chappel who has just published a massive book on WireShark.
- http://searchnetworking.techtarget.com/generic/0,295582,sid7_gci1512438,00.html?track=NL-81&ad=768869&asrc=EM_USC_11672959&uid=725227 Filter traffic.
- http://searchnetworking.techtarget.com/generic/0,295582,sid7_gci1513386,00.html?track=NL-81&ad=768869&asrc=EM_USC_11672958&uid=725227 Some tutorials.
- http://wiki.wireshark.org/SampleCaptures Sample wireshark captures!