This can either be run from cautha via an X Windows session (if you have an X Server on your local machine), or you can download a copy of the Iplanet directory server from www.iplanet.com/downloads/ and install only the administration console on your local workstation.
The administration server is running on port 9759 on cautha.
These are probably the best ways to get real stuff done, but you'll either need a shell account on cautha or access to a host that has them installed.