MRTG-XTRA is a high quality distribution for Microsoft Windows of MRTG, the open source network monitoring tool, released under the GNU General Public License.
What is MRTG-XTRA?

MRTG-XTRA incorporates MRTG (Multi Router Traffic Grapher) a popular network monitor for Microsoft Windows. In addition, we have included NET-SNMP a collection of tools for exploring and experimenting with SNMP enabled devices. You may download the package freely and use wherever and whenever you need to.

The package includes MRTG in addition to all of the software you need to be up and running quickly. You do not need to install any other software in order to be up and running with a working network monitor.

MRTG-XTRA also incorporates OPENXTRA Commander, a tool for configuring and managing your MRTG installation.
MRTG-XTRA Features

Based on MRTG (Multi Router Traffic Grapher) a popular and very powerful tool for graphing traffic on network links.

* Used by thousands all over the world
* Graph network traffic in and out of devices
* Produce short and long term graphs, in minutes, days, weeks, up to 1 year
* Graph any SNMP variables, from any device, used for many specialist applications
* Large, active development community
* Supported and packaged by OPENXTRA

MRTG-XTRA for Microsoft Windows



DOWNLOAD PAGE: http://www.openxtra.co.uk/downloads/mrtg-download.php

Sorry to reopen an old topic, but my question is similar to this thread.

I'm looking for a probing tool, one that'll let me monitor incoming data and track where it's going in my network (basically it's final destination). The network here maxes out several times a day and I want to see who's downloading what. It's probably streaming video, but I want to make sure.

I'm downloading MRTG-XTRA to try it out, but I'm not sure it's what I'm looking for.

Thanks.

Ph0enix, I've never tried using a packet sniffer to do what I'm trying to do. Short of looking at a packet for bytes transferred, how do you propose this using wireshark?

Well, the problem with that is, since I don't know exactly when the spikes occur, as they're not specific to any particular time of day, I'd have to run a capture indefinitely until I see a spike on my bandwidth monitor. Then I can go and look frame by frame. It's a bit of a pain in the a$$. But yes, that'd be the way to do it w/wireshark.

*shrug*

You can run tcpdump constantly to capture all traffic, then copy the dump file to a machine running wireshark and analyze it. You can also configure MRTG to trigger events, for example if a certain threshold is reached it can notify you via e-mail. I've been meaning to play with that functionality but never actually got around to it.

I couldn't get MRTG to run on my monitoring PC b/c of the router community string name. It wasn't 'public', it's not in the config, and I can't find what the default would be (though it should be public). I'll try just letting wireshark capture for a few hours and then skim through.