per-user bandwidth monitor

[mno]

Hi guys,

Can anyone recommend a package or several packages that would allow me to detect bandwidth usage on a per-user basis? If no package is available, can anyone recommend an efficient way of doing this with the tools that are available?

Thanks,
Max
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[pakman]

I'm not aware of anything to do this at the moment, might be worth browsing around freshmeat.net
[edit] unless you just want it for apache, in which case use 1.3 and mod_throttle http://www.snert.com/Software/mod_throttle/

The way I'd probably approach it would be to look at the iptables --uid-owner and --gid-owner functions. Theres a project called ipac-ng to give traffic totals from iptables. http://sourceforge.net/projects/ipac-ng/ (its also in portage) If you could get the different users traffic flowing through different iptables chains then perhaps ipac-ng can total them all up, that could work. I've not used this software though so can't say how well it functions.

Another possibility would be to use the iptables --mangle option to mark each users packets, then use tc/iproute QoS tools to classify them (you don't need to actually do any QoS on them for this to work, just pass each different marked packet into a different class) then the output from "tc show" would give you the traffic totals for each class, i.e. each user. Theres a limit to how many different marks you can use though, I believe about 255. A bit on marking packets with netfilter here: http://lartc.org/howto/lartc.netfilter.html

[zbindere]

for me the following start script worked:
http://freshmeat.net/projects/cbq.init

[mno]

Thanks a lot for the replies!
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