(Kismet is a command line (ncurses) based 802.11layer2 wireless network detector, sniffer, and intrusion/intrusion detection system. It performs forced sniffing of the network (compared to many automated tools, such as NetStumbler) and can discover invisible networks (non-beacons). It can automatically view network IP segments by sniffing TCP, UDP, ARP and DHCP packets, record communication logs in a Wireshark/TCPDump compatible format, and increasingly segment the viewed network and perform range estimation according to the downloaded distribution map . As you can imagine, this tool is often used for wardriving. Um! And warwalking, warflying, and warskating…)