Thanks for the idea. I'll look into it.

On 10/01/2014 18:42, mxb wrote:
You can setup RADIUS, make users authenticate against it and assign IP stored 
in RADIUS srv.
Then use plow(4) to account.
This is just theory.

On 10 jan 2014, at 16:33, Some Developer <[email protected]> wrote:

I have a VPN server configured using L2TP and IPSec. Clients authenticate using 
x509 certificates but I'd like to be able to be able to track the bandwidth 
used by each client based on which x509 certificate they used to authenticate 
with the VPN.

I know that you can track types of connections etc with PF but I'm not sure if 
you can track packets based on authentication such as this. Is this possible to 
do at all?

I'm still quite new to PF so I'm still trying to get an idea of what it is 
capable of.

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