Subject: Re: traffic matrix package?
To: Steven M. Bellovin <email@example.com>
From: Patrick Welche <firstname.lastname@example.org>
Date: 10/27/2005 15:26:09
On Wed, Oct 26, 2005 at 12:35:38PM -0400, Steven M. Bellovin wrote:
> In message <Pine.NEB.4.63.0510261559240.616@localhost.>, David Brownlee writes:
> >On Wed, 26 Oct 2005, Steven M. Bellovin wrote:
> >> Is there any package that will construct a traffic matrix? Ntop is
> >> telling me that there is traffic to strange and wondrous places, but I
> >> don't know which hosts are talking to them, or over what ports. (Maybe
> >> ntop can do this, but if so I haven't figured out how to make it
> >> display it.)
> >> More precisely -- I have a small (Soekris) NetBSD box with three
> >> bridged interfaces, one of which leads to the outside world. I'd like
> >> to run some package that could monitor traffic on that third interface
> >> and produce a matrix showing which hosts are talking to which.
> >> Generating data in NetFlow format is probably ideal, since there are
> >> lots of tools to manipulate that. I see nprobe in pkgsrc, but its
> >> availability terms are, well, unusual. The package is also quite old;
> >> it's version 1.3.1 from 2002. 4.0 is the current version.
> > For realtime display I've find iftop or flodo of some use though
> > neither is ideal...
> Or Ethereal. But I'm looking for something that produces databases that
> I can query later.
I happen to use "NeTraMet", and wrote a little something to load its log
files into postgresql. It splits into a meter and a reader. All seems
% uname -srp
NetBSD 1.6B i386
2:50PM up 549 days, 2:17, 2 users, load averages: 0.65, 0.55, 0.39
% ps ax | grep -i netramet
4787 ?? Ss 574:42.72 /usr/local/bin/NeTraMet -D -i ex0 -w Newnham
22516 p0 RV 0:00.00 grep -i netramet (csh)