"Miner, Jonathan W (CSC) (US SSA)" <jonathan.w.miner(a)baesystems.com>
writes:
What about replacing their shell with "/bin/false" ? You
may also need
to edit the /etc/shells file and add "/bin/false" so that FTP recognizes
it as a valid shell.
There is already a shell for this purpose, it's called /sbin/nologin.
Regards
Ingemar