Scapy

Scapy - одновременно интерактивная программа и библиотека манипулирования сетевыми пакетами.

Инсталляция Scapy в Ubuntu 9.04

# aptitude show python-scapy
Пакет: python-scapy
Версия: 2.0.0.5-1
Раздел: universe/net
Сопровождающий: Ubuntu MOTU Developers <ubuntu-motu@lists.ubuntu.com>
Размер в распакованном виде: 799k
Зависимости: python (>= 2.5), python-support (>= 0.7.1)
Предлагает:

tcpdump Linux примеры использования, graphviz, imagemagick, python-gnuplot, python-crypto, python-pyx, ebtables, python-visual, sox, xpdf,gv 

Конфликтует: scapy (< 1.0.5-1)
Заменяет: scapy (< 1.0.5-1)
Описание: Packet generator/sniffer and network scanner/discovery
 Scapy is a powerful interactive packet manipulation tool, packet generator, network scanner, network discovery, packet sniffer, etc. It can for the moment
 replace hping, 85% of nmap, arpspoof, arp-sk, arping, tcpdump, tethereal, p0f, .... 
 
 In scapy you define a set of packets, then it sends them, receives answers, matches requests with answers and returns a list of packet couples (request,
 answer) and a list of unmatched packets. This has the big advantage over tools like nmap or hping that an answer is not reduced to (open/closed/filtered),
 but is the whole packet.
Сайт: http://www.secdev.org/projects/scapy/
# aptitude install python-scapy