WebSphere Portal Users and Groups listing

For WebSphere Portal 6.1 and above
Refer to wimconfig.xml for all settings

For WebSphere Portal below 6.1
Refer to wmm.xml

If you do not see any users under All authenticated portal users or groups, modify the search filter in the above corresponding file like searchFilter="" (empty without specifiying any values)

If your LDAP base has a lot of users, sometimes portal hangs. You can validate the users by searching using cn instead of viewing complete listing.

For clustered environments, refer to the above files both from Deployment Manager and Portal Server.