Kismet Wireless Network Sniffer
Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and can sniff 802.11b, 802.11a, and 802.11g traffic.Kismet identifies networks by passively collecting packets and detecting standard named networks, detecting (and given time, decloaking) hidden networks, and infering the presence of nonbeaconing networks via data traffic.
The stable Kismet version is the “official” release. The card support, protocol APIs, etc. are solid. The only changes to the stable release will be bugfixes. New users should probably chose the stable release, but if something doesn’t work, try the development code, often bugs are fixed there prior to a new stable release.
View the changelog here