Central access control system for Linux

Hi All

I'm wondering if there is any solution for Linux systems,
workstations and servers, which provide central(enterprise) access
control system. I mean sth which could integrate with network
information service e.g. NIS+. For example, A major feature which
people are looking for is central control over portable media access
of users and workstations.

Looking forward to your reply

Cheers
--
Mehdi Sarmadi