At 05:50 PM 7/26/01 +0100, you wrote:
Can anyone recommend a package (preferably Open Source for Linux) to monitor network traffic and to give monthly reports on the bandwidth used? We have a set of Cobalt RAQs and for most I can process the logs and get the bandwidth usage that way. However for co-located RAQ's and other servers, I would like to be able to report on how much bandwidth has been used for HTTP and FTP, in and out. Gordon.
You could try MRTG (http://mrtg.hdl.com/mrtg.html) for overall traffic monitoring.
I have set up rules for IP auditing with ipfwadm on a Qube2, using a couple of basic cron scripts to collect usage information every fifteen minutes and e-mail me daily reports. I assume you can set similar rules with IPchains and IPtables.
Unfortunately, I don't know of a good way of monitoring traffic by service (I have seen info on ipfwadm that hints at an ability to do this, but it seems that it only captures the first packet associated with the service, and then shunts packets two through n to a different log -- I may have interpreted this incorrectly).
Peter