Hi there (its me again :P) Another problem: How to assign users to a NAS ? In radcheck i got entires for 4 users (A,B,C,D) and 2 nas (I and II) But i want to assign somehow users A and B to NAS I and users C and D do NAS II (eg: user C using NAS II should get Acess-Reject - wrong username or password ) I found out that it is possible using REALMS - check calling station id And separating databases: User A and B and NAS I are id sql1 and C,D,II in sql2 But this way doing it could be quite dificult for longer run. Other option i have in mind is to add a record or table and match Usertable and Nastable together and change SQL entires for authentication like : Select * from radcheck where username=calling user and nas=calling station (example). Is there any simplier method to group users and nas together ? Thanks for answering my stupid questions Pawel Cieplinski