Bandwidth monitoring on linux firewall router

Hello c.o.l.networking! I am looking for a couple software
suggestions. I currently have a Linux box with multiple interfaces,
kernel 2.6.15 working as a firewall/router on my home network with
some additional services running on it. I am using MRTG for
monitoring, and it works great, keeping track of network, CPU, etc.
However, I would like to get some more granular monitoring of the
network utilization.

The firewall is IPtables-based and I use the shorewall scripts to
manage the policies and rules.

Currently, I have it setup for the send/receive for each of the
interfaces. However, I'd like to keep track of the percentage of
bandwidth being used on a per port, or per protocol basis. Ideally, I
would like something that has a little logic so that it could figure
out that something is, say, P2P no matter what port the client uses,
and aggregate 25 and 587 as 'SMTP' traffic. Things like that.
Web-based graphs like MRTG would be great

I was wondering what, if anything, people on this forum were using. I
would prefer open source, but will look at all options reasonable for
a home user/office type scenario.

thank you!
Kevin

--
In Vino Veritas
http://astroturfgarden.com

On 2007-03-21, Kevin T. Neely <(E-Mail Removed)> wrote:
> Hello c.o.l.networking! I am looking for a couple software
> suggestions. I currently have a Linux box with multiple interfaces,
> kernel 2.6.15 working as a firewall/router on my home network with
> some additional services running on it. I am using MRTG for
> monitoring, and it works great, keeping track of network, CPU, etc.
> However, I would like to get some more granular monitoring of the
> network utilization.

Take a look at bmon and ntop.
->HS



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On 2007-03-22, H.S. <(E-Mail Removed)> wrote:
> On 2007-03-21, Kevin T. Neely <(E-Mail Removed)> wrote:
>> However, I would like to get some more granular monitoring of the
>> network utilization.
>
> Take a look at bmon and ntop.
> ->HS

These are great, thank you. bmon looks fun to play with, but I think
ntop is exactly what I am looking for. Based on the name, I thought
it was more of a real-time monitoring, but from the site, it looks
like it does trending and stores usage history, which is nice. I will
give it a try!

thanks,
K

--
In Vino Veritas
http://astroturfgarden.com