KisMAC is a free stumbler application for MacOS X, that puts your card into the monitor mode. Unlike most other applications for OS X we are completely invisible and send no probe requests.

KisMAC supports several third party PCMCIA cards - Cisco Aironet, Orinoco, PrismII, PrismGT and Atheros.

Here are some key features of "KisMAC":

· Reveals hidden / cloaked / closed SSIDs
· Shows logged in Clients (with MAC Addresses, IP addresses and signal strengths)
· Mapping and GPS support
· Can draw area maps of network coverage
· PCAP import and export
· Support for 802.11b/g
· Different attacks against encrypted networks
· Deauthentication attacks
· AppleScript-able
· Kismet drone support (capture from a Kismet drone)


Requirements:

Supported hardware chipsets
· Apple AirPort and AirPort Extreme (dependent upon Apple's drivers)
· Lucent Hermes I & II (Orinoco 2 and 11MBit)
· Intersil Prism 2, 2.5, 3 in PCMCIA and USB devices
· Cisco Aironet (with older 4.xx firmware)
· Intersil PrismGT
· Atheros PCMCIA
· Ralink rt2570 and rt73 USB devices (in development)

Crypto support:
· Bruteforce attacks against LEAP, WPA and WEP
· Weak scheduling attack against WEP
· Newsham 21-bit attack against WEP