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- Path: sparky!uunet!gatech!concert!duke!khera
- From: khera@cs.duke.edu (Vivek Khera)
- Newsgroups: comp.unix.bsd
- Subject: Re: su behavior
- Message-ID: <KHERA.92Aug31132624@thneed.cs.duke.edu>
- Date: 31 Aug 92 17:26:24 GMT
- References: <1992Aug31.155112.18068@engage.pko.dec.com>
- Sender: news@duke.cs.duke.edu
- Organization: Duke University CS Dept., Durham, NC
- Lines: 29
- Nntp-Posting-Host: thneed.cs.duke.edu
- In-reply-to: eje@irenaeus.mlo.dec.com's message of 31 Aug 92 15:51:12 GMT
- X-Md4-Signature: ae46c31222d41b6531da788508d54ddf
-
- In article <1992Aug31.155112.18068@engage.pko.dec.com> eje@irenaeus.mlo.dec.com (Eric James Ewanco) writes:
-
- I've used Ultrix in the past, Suns too, and they allow you to su on
- any terminal. But 386bsd insists that the only ones who can su are
- those who are in the group "wheel". This is pretty stupid, though,
- because when I put my user in group wheel, I automatically had root
- privileges!! This totally defeats the purpose of su! If you are
- allowed to su, then you don't need to because you already have root
- access!!!
-
- Is this standard behavior for su? What is the reasoning behind this?
-
- this is the normal behaviour of modern versions of su. this way, when
- you have, say 1000 users on your system, knowing the root password
- just isn't enough to become root without access to a machine's
- console. on our set up, only the machine consoles which are in a
- physically locked room allow root logins, all other root access must
- be via an explicit su command. only the few people who happen to be
- in group wheel are allowed to do that. its just an extra level of
- security.
-
- now if you claim that just by being in group wheel, one has root
- priveleges, then i suggest you find a good book on unix security and
- read it.
- --
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
- Vivek Khera, Gradual Student/Systems Guy Department of Computer Science
- Internet: khera@cs.duke.edu Box 90129
- (MIME mail accepted) Durham, NC 27708-0129 (919)660-6528
-