The old Big Baran hardware that has supported ISPG, Farrer and Silo for many years has been decommissioned. Most of the web services were migrated to a new virtual server (apww03.csu.edu.au). The OS changed from FreeBSD to RedHat Enterprise Linux (RHEL) according to CSU Infrastructure Standards.
Your system manager hasn't had much experience with RHEL and made a few mistakes. Fortunately nothing was a computing Showstopper.
In the process I was able to upgrade Moodle to 3.1. There's some assets missing that I'll have to get them copied from the old server.
Thanks to Bob Hay for guiding me through this migration.