"Basically, tcptrack is a sniffer which will show the
information about TCP connections on a specific interface. tcptrack
will watch all the connections that occur and show the information
in a nice interface. Although it's on a text user interface but
it's simple and easy to understand. tcptrack has been packaged on
several popular Linux distributions. The latest version of tcptrack
is 1.2.0 released on December 20, 2006. You can download the source
code from the tcptrack website.
"tcptrack provides some useful information for administrators to
track every single connection to their servers. I use tcptrack to
watch my proxy to make sure that every user gets an appropriate
bandwidth, no one saturates the whole bandwidth..."