Can you pls advice on how to limit logon concurrent connection. For example: I want to limit ADMINISTRATOR logon-id. Thanks in advance.

Not sure if I understand this right, but do you mean limit the time the account is logged on, or who uses the account, if the later, then change the password, & limit to who knows it. If the former, then under the account on the account tab, logon hours. Hope this helps

The limitation, Im referring is the concurrent connection. Meaning that the Administrator account to be use only for specific number of times logged-in onto the server at the same time. Let say only two concurrent connection. For example: Connection#1: used by user1 on the SERVER. Connection#2: used by user2 from one remote workstation PC. Then since 2 connection is in-use. Nobody else can login as ADMINISTRATOR. It is now restricted until user1 or user2 logged-out. Hope this is clear now. Thanks in advance...