Sniffer
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Allows attacker to see everything sent across the
network, including userIDs and passwords
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NIC placed in promiscuous mode
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Tcpdump
http://www.tcpdump.org
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Windump
http://netgroup-serv.polito.it/windump
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Snort
http://www.snort.org
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Ethereal
http://www.ethereal.com
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Sniffit
http://reptile.rug.ac.be/~coder/sniffit/sniffit.html
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Dsniff
http://www.monkey.org/~dugsong/dsniff
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