Re: [SLUG] traffic monitoring question

From: Wayne Pollock (pollock@acm.org)
Date: Thu Jul 15 2004 - 22:42:24 EDT


Linux supports SNMP with a server and command line tools that
can be scripted.

-Wayne

Robert Foxworth wrote:
>
>
>>>I'm looking for software that will monitor all the
>>>traffic on my network and create a nice viewable graph
>>>which I can view from anywhere with a web browser.
>>
>>mrtg might fit that bill... haven't used it for sometime
>>though. http://mrtg.hdl.com/mrtg.html
>
>
>
> It's not clear to me if you want to just look at the density
> of traffic at layer 2, or want to sort by protocols.
>
> mrtg would work but needs to go through a device that
> has SNMP enabled, so you can poll the MIB of the
> interface and see what the stats are.
>
> You can buy a Cisco 2501-type on eBay and turn on SNMP server
> and look at that with mrtg but that seems complicated
> to just send traffic through it, as you probably would
> want two ethernet interfaces, and an up to date IOS image
> of 12.x, or two routers back to back through the serials.
>
> There is a commercial program "observer" that runs on a
> windows box that graphs traffic density by pkts/sec and by
> utilization percentage and draws a quite detailed graph
> of each parameter but it doesn't cache the data very long,
> maybe 20 minutes. You could vnc to the box and see the
> screen detail remotely. Observer costs nearly $1k for one
> instance, and I doubt it is the real answer to your requirements.
>
> You could run the ipcop firewall which includes mrtg and
> send all your traffic through it, which has a web interface
> but again not a true solution I suppose.
>
> A lot of non-answers, I guess.
>
> Bob
>
>
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