You can set the limit of active sessions opened via SAM console. If you try to open a session after reaching the limit, a popup appears mentioning user has reached the limit and cannot open anymore sessions.
User can configure the limit by manually connecting to SAM domain manager using the
dmctl client and running the following command from there:
put ICS_User::<ICS_User Instance>::max_sessions <max_sessions-count>
For example, if a user wants to set the maximum sessions for the admin user as 6 , then you have to run the following command: