There used to be this small, simple tool called "ntop" which did exactly that - top, but for active network connections.
Then the authors decided to go apeshit and add everything and the kitchen sink to it ... a GUI, an http server, all kinds of crazy features as they attempted to slot it as some kind of end-all-be-all enterprise monitoring software.
I had some hacked up source tarballs that continued to allow me to run the old, circa 2002 ntop on systems as old as FreeBSD 6.x, but it no longer compiles under 8.x.
tl;dr: ntop used to exist but the devs had dollar signs in their eyes and mutated it beyond all recognition.
There used to be this small, simple tool called "ntop" which did exactly that - top, but for active network connections.
Then the authors decided to go apeshit and add everything and the kitchen sink to it ... a GUI, an http server, all kinds of crazy features as they attempted to slot it as some kind of end-all-be-all enterprise monitoring software.
I had some hacked up source tarballs that continued to allow me to run the old, circa 2002 ntop on systems as old as FreeBSD 6.x, but it no longer compiles under 8.x.
tl;dr: ntop used to exist but the devs had dollar signs in their eyes and mutated it beyond all recognition.