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Date:      Wed, 15 Jul 1998 11:55:37 -0400
From:      Matthew Hunt <mph@pobox.com>
To:        Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at>
Cc:        Wes Peters <wes@softweyr.com>, tom@uniserve.com, paulo@nlink.com.br, jer@jorsm.com, freebsd-stable@FreeBSD.ORG
Subject:   Re: Finger and getpwent
Message-ID:  <19980715115537.A28115@mstar.astro.psu.edu>
In-Reply-To: <Pine.GSO.4.00.9807151703420.16276-100000@markab.dbai.tuwien.ac.at>; from Gerald Pfeifer on Wed, Jul 15, 1998 at 05:06:16PM %2B0200
References:  <19980715101943.A27075@mstar.astro.psu.edu> <Pine.GSO.4.00.9807151703420.16276-100000@markab.dbai.tuwien.ac.at>

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On Wed, Jul 15, 1998 at 05:06:16PM +0200, Gerald Pfeifer wrote:

> In principle you could set the shell to /usr/bin/yes (or any dummy shell)
> and add that to /etc/shells.

But then you are allowing FTP access, which you don't usually want to
do.  Depending on the particulars of your machine, the users could
run arbitrary commands using .forward.

I've always been under the impression that shell and FTP checking
/etc/shells and mail services *not* doing so was a deliberate
design decision, not an oversight.

-- 
Matthew Hunt <mph@pobox.com> * Stay close to the Vorlon.
http://www.pobox.com/~mph/pgp.key for PGP public key 0x67203349.

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