nast - 0.2.0-8 main

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.
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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
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It also provides a ncurses menu.