How limit bandwidth per user or group of users?

[pierreda]

Hello,

Is it possible to limit bandwidth per user or to a group of users?

I would like to do that because I'll have "standard user" who open session normally with no limits and others will connect using vouchers. For theses, I would like to limit the bandwidth.

Mays be more complex is to limit bandwidth to groups of vouchers I created. For instance a group G1 with 5 vouchers and want to limit bandwidth and a group G2 with 5 vouchers and want to limit to another bandwidth.

Thanks