Linux, BSD, and their handheld versions
Kismet is a free wireless (802.11b) sniffer that includes a powerful set of tools and options. It supports Prism II chipset cards using the drivers provided by the Wlan-NG project. Kismet can capture data from multiple packet sources, and can log in Ethereal-, tcpdump-, and AirSnort-compatible log files, which makes it extremely versatile for data analysis and WEP cracking. In addition, it also provides graphical mapping, and can detect network addressing schemes. This tool is one of the best Linux programs available for wireless data capture.
This is a Linux program, which means installation involves several steps, ...