nast

Can sniff in normal mode or in promiscuous mode the packets on a network interface and log it. It dumps the headers of packets and the payload in ascii or ascii-hex format. You can apply a filter. The sniffed data can be saved in a separated file. As analyzer tool, it has many features like: * Build LAN hosts list * Follow a TCP-DATA stream * Find LAN internet gateways * Discover promiscuous nodes * Reset an established connection * Perform a single half-open portscanner * Perform a multi half-open portscanner * Find link type (hub or switch) * Catch daemon banner of LAN nodes * Control arp answers to discover possible arp-spoofings * Byte counting with an optional filter * Write reports logging It also provides a ncurses menu.