You could have all of the uid's in /etc/passwd but with a password of
":*:" so that they can be used for lookup but not for logging in. You
could then have a separate passwd.clients file for the real passwords.
Just an idea. I haven't tried this.
Robert Perlberg
Dean Witter Reynolds Inc., New York
phri!{dasys1 | philabs | mancol}!step!perl