I believe that the 'current logged in users' is an open enhancement and is scheduled for a release, contact support to see if a specific release has been targeted (or if I'm dreaming and it's not scheduled).
You could disable the RBAC accounts for your users w/ a script like:
for user in `blcli RBACUser getAllUserNames`
if [ "$user" != "BLAdmin" ] || [ "$user" != "RBACAdmin" ]
blcli RBACUser disable $user
(i think you want an 'or' not an 'and' there)
and then use the RBACUser enable to re-enable users.
If you're logged into the system and you go to Tools->Appserver Details (newer releases would be Tools->Infrastructure Management->Application Servers.
If you expand the appserver that you want to know about and select the "Client Connections" entry you should see all of the hosts that are connected to the appserver as well as what user is connecting.
I believe Bill's suggestion for disabling is the only solution right now.
Was that added in 7.4.3/4 ?
It should pre-date 7.4.3 as 7.4.3 enhanced it to include idle time. Unless this info was only accessible via jconsole before 7.4.3. I don't know about that though.