Hello guys!

I have a problem, because my isp using billing data. So should I use a limit not to exceed this value. The problem is just the router reboot, this data is lost. So I want to store this data and to reduce to zero once a month.

Thanks....

what data are you talking about? do you mean your traffic and your clients' traffic?
if so i advise you to use user manager

can i use it for pptp links?

100%

My aim is to save the data trancferd a specific pptp interface (The 3G interface at a 411u). We use the user manager to give login users.

Because maybe I was not clear. What I want is to count the total traffic (upload + download) and put a limit eg: 5GB. This counter does not want to lose count after a reboot. This is very important to me because after the 5GB, I have to pay ~ 5 € / MB !!!!!!!!!!

Thanks...