I'll note there was another RFS that was posted to net.sources and
net.unix-wizards by Todd Brunhoff in January 1986. This was
completely different from the AT&T System V's; Todd's RFS was done as
part of his Master's Degree at the University of Denver, and it was
heavily dependant on BSD 4.2/4.3's sockets interface.
For more information, see:
https://groups.google.com/g/net.unix-wizards/c/QwRVsZS9jEM/m/V4ZI64CKopsJ?p…
We used this version of RFS at MIT Project Athena for a while before
switching to AFS, and it's mentioned in Professor Saltzer's Athena
Technical Plan, in the section entitled, "The Athena File Storage
Model":
https://web.mit.edu/saltzer/www/publications/athenaplan/c.6.pdf
Project Athena integrated MIT Kerberos (Version 4) into both NFS and
RFS, and of course AFS used Kerberos for its authentication tokens.
- Ted