[gentoo-server] Measure/Control traffic per user/customer

[Florian Huber]

Hi list,
does anyone of you have a good solution for measuring  the monthly
traffic amount for several customers on a web-hosting machine?

I've heard about logging apache with a per-vhost basis and then
caclulate the traffic. But what about ftp, mail or http headers?
And which program do you suggest for logfile analysis? webalizer? analog
et. al.?

The second solution I'm thinking of is using iptables with the
owner-match rule and apache2 with the perchild mpm which both are marked
as experimental!
Has anyone already experience with this?

If tried apache2 + perchild mpm + mod_php, but apache does not start 
anymore. I think it's related to pear, but I had no to search the
internet yet.

TIA
	Florian Huber