Subject: Re: traffic matrix package?
To: David Brownlee <abs@NetBSD.org>
From: Steven M. Bellovin <firstname.lastname@example.org>
Date: 10/26/2005 12:35:38
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.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb