Ethereal

bash-2.05b$ pkg_info ethereal
Information for ethereal-0.9.12:

Comment:
Network protocol analyzer

Requires:
glib>=1.2.10nb5
gtk+>=1.2.10nb4
net-snmp>=5.0.6
perl>=5.0

Description:
Ethereal is a free network protocol analyzer for Unix and Windows.
It allows you to examine data from a live network or from a capture file
on disk.  You can interactively browse the capture data, viewing summary
and detail information for each packet.  Ethereal has several powerful
features, including a rich display filter language and the ability to view
the reconstructed stream of a TCP session.

Homepage:
http://www.ethereal.com/


bash-2.05b$