We need to protect the materials from casual Web access for the forseeable future, so I've implemented a simple authentication system based on a single user id. It uses the Cocoon authentication framework, and is based on one I created for the Larkin site in the past. The documentation is slightly better than it used to be, but I still find it very confusing. The long-term plan is to integrate LDAP, but this will require a special build of Cocoon with LDAP included in it; Greg is working on learning how to build Cocoon with a selected list of blocks enabled, and no samples, but this will take a long time to do.