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From: jxs7451@ritcv.UUCP (jeff)
Newsgroups: comp.unix.wizards
Subject: Re:  su Security
Message-ID: <72@ritcv.UUCP>
Date: Wed, 4-Feb-87 11:57:51 EST
Article-I.D.: ritcv.72
Posted: Wed Feb  4 11:57:51 1987
Date-Received: Sat, 7-Feb-87 04:25:26 EST
References: <4212@brl-adm.ARPA>
Reply-To: jxs7451@ritcv.UUCP (jeff)
Organization: Rochester Institute of Technology, Rochester, NY
Lines: 11

In article <4212@brl-adm.ARPA> ron@BRL.ARPA (Ron Natalie) writes:
>"su" program is restricted to people who are listed in the /etc/group
>file as being in the "0" group.

Not quite, People of group 1(adm here, 0 is now default) are the only 
ones able to su to root.  su can still be used to su to other users.
When a user in not of group 1, then it rejects the command before a
passwd is asked for to. (4.3 on 780).

Jeff
ritcv!jxs7451