Currently I have a three Cisco VPN Concentrators that are load balanced. I have a Windows 2003 server for my Radius server. This allows users to log in to the Cisco VPN Client with their Active Directory User name and password. This is my question. Is there anywhere in the Cisco Concentrator or the IAS Server that will allow for example "John Doe" to only be able to log in once. What I'm trying to prevent is the same user logging in multiple times. When I look in the concentrator and go to the general tab of the group, there is an option for Simultaneous Logins, but this is for simultaneous logins for this group, not per user. Is there a way to accomplish what I am trying to do? Thanks.