bjoernvold.com

Iftop is the brother of Top and Htop. It keeps track of where your bandwith is going. and monitors your network.
Here it is shown in my standard guake terminal:

If you run iftop from the CLI it will attempt to monitor your network interface, If you are on wireless you might have to do a
Here you see it to the left in an urxvt terminal that is transparent and integrayed in my wallpaper, so I have a "live" wallpaper with network info.

That's a good new tip for me.
Sometimes I wish I could see what is going through my nic and this looks very informative.
For some reason, it chose eth1 by default, which is not being used, and I needed to tell it -i eth0 to see my wired connection.


( I see some iftop screenies in my Dropbox from a year and a half ago. but it's good to be reminded of good info. )

Yes it is a good one. Even if Gurus know it already.
It should be run as root.

Iptraf is a good alternative if you need to watch a server.