In 2 months I've gathered some info from my ISP and I'm rather curious if it could somehow help me. Here we go:
- Each of the user has his own username & password. He's only allowed to connect from his residence, so each account is tied to the users phone number.
- They use Ericsson DSLAM's (not sure about the model)
- Commonly given-out modems for the end users are D-Link 360-T's and 360-R's
- After the user has reached 100GB of traffic, the speed is reduced to 64/64kbps
- When you cross the limit of 100GB, the physical connection between the DSLAM and the modem isn't cut off
- The BRAS is the one which will limit the user to 64/64kbps
Also, an insider told me that the RADIUS is poorly configured, and he confirmed that there is a loophole, but he couldn't tell me what is it or he risks losing his job.
I have limited knowledge about networking, so god knows what gibberish I've posted, but I tried to be as concise as I could. Any information about how could this be helpful to finding a loophole in their system will be more than welcomed.