nast

packet sniffer and lan analyzer

Description

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.

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Homepage

http://nast.berlios.de/

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