FreeNIBS is a loadable plugin for the FreeRADIUS radius server. FreeNIBS provides authorization, authentication, and accounting for dial-in (PPP/PPPOE/PPTP) users. It can be used for real-time prepaid and postpaid billing. FreeNIBS can bill users based on service accuration, time, traffic, and both time and traffic. FreeNIBS has very flexible settings for groups, users, and prices. All data is stored in SQL databases such as MySQl, PgSQL, and Oracle.