Date: Thu, 7 Oct 2004 12:52:32 -0600 From: Mark Ogden <ogden@eng.utah.edu> To: Mark Stanislav <KryptoBSD@uncompiled.com> Cc: freebsd-security@freebsd.org Subject: Re: Question restricting ssh access for some users only Message-ID: <20041007185232.GA25539@yem.eng.utah.edu> In-Reply-To: <3C735693-1890-11D9-B63E-000A95CD9660@uncompiled.com> References: <cvuam0t1l2u7npnigk6oqrlq288hlu0mgn@4ax.com> <20041007195417.430a8b5c@ariel.office.volker.de> <20041007180630.GA25130@yem.eng.utah.edu> <79722fad041007112227c3c241@mail.gmail.com> <20041007183400.GA25339@yem.eng.utah.edu> <3C735693-1890-11D9-B63E-000A95CD9660@uncompiled.com>
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Mark Stanislav on Thu, Oct 07, 2004 at 02:39:35PM -0400 wrote:
>
> On Oct 7, 2004, at 2:34 PM, Mark Ogden wrote:
>
> >Vlad GALU on Thu, Oct 07, 2004 at 09:22:16PM +0300 wrote:
> >>On Thu, 7 Oct 2004 12:06:30 -0600, Mark Ogden <ogden@eng.utah.edu>
> >>wrote:
> >>>Volker Kindermann on Thu, Oct 07, 2004 at 07:54:17PM +0200 wrote:
> >>>>Hi Jim,
> >>>>
> >>>>
> >>>But what if you have 1000 users? From my understanding you would have
> >>>to add all users to the AllowUsers list.
> >>
>
> Why can't you just make a script to do that?
>
> >> Or simply add all of them to one of the groups specified in
> >>"AllowGroups".
> >
> >Yes I do understand how that would work. Yet me better explain what we
> >would like to do: We have over 9000 users and about 100 different
> >groups. We would like to allow root ssh login to our machines but only
> >from one or two machines. We like to have root login to be able to run
> >remote commands to all our machines. So is there a way to limit roots
> >login from one or two machines?
>
> Why not just let them use 'sudo' or better yet, just give them access
> to become root after they login to their initial shell?
For us:
1) 'sudo' is in afs so one whould have to get a token (by typing
a password) first to be able to use sudo.
2) To use su without a password, again one would have to use their
token gotten from afs. see #1.
I guess we could investigate AFSTokenPassing via ssh.
-Mark
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