Package jnettop

Network traffic tracker

http://jnettop.kubs.info/wiki/

Nettop is visualising active network traffic as top does with processes.
It displays active network streams sorted by bandwidth used. This is
often usable when you want to get a fast grip of what is going on on your
outbound router.

System Administration
Command Description
jnettop View hosts/ports taking up the most network traffic