that's really nice.. would you like to share configuration and script?
I have no problem, but the script is totally adapted to my Database and billing system, so there are some things that I can not post here. Tell me exaxctly what do You want to know?
if you do pppoe with user manager back-end, than you will find the total upload and total download for each session.
thus, you can do monthly report with duration, total upload and total download during a month
This is absolutely true, a PPPoE / Radius system is the easiest way to go, also you can find some useful systems like DMASoftLab Radius Manager, but I dont want to use PPPoE on my network because is 99% wireless (call me crazy but I still don´t trust in PPPoE over wireless). Also I don´t want to use Simple Queues, so I don´t have other choice.
I have this system (ntop) running by 4 days now, and I see some wrong numbers on there, so I will have to check whats foing on there (ntop)