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Date:      Thu, 25 Mar 1999 18:08:42 -0800
From:      Mike Thompson <miket@dnai.com>
To:        David Gilbert <dgilbert@velocet.ca>
Cc:        freebsd-security@FreeBSD.ORG
Subject:   Re: Kerberos vs SSH
Message-ID:  <4.1.19990325180802.00a23d90@mail.dnai.com>
In-Reply-To: <14074.43908.398273.970148@trooper.velocet.ca>
References:  <4.1.19990325120933.00ad08d0@mail.dnai.com> <Pine.GSO.4.10.9903251409300.17330-100000@primrose.isrc.qut.edu.au> <4.1.19990325021717.0097e980@mail.dnai.com> <4.1.19990325120933.00ad08d0@mail.dnai.com>

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Point well taken. I'll attempt to modify the design to prevent 
access to one server automatically implying access to all servers.

Mike


At 04:32 PM 3/25/99 -0500, David Gilbert wrote:
>The big hole in your design is that access to one machine implies
>access to all machines.  Once someone gains access (though whatever
>means) to one machine, they can roam around freely amongst many
>machines.
>
>To prevent this, you would want to pass authenticated (not
>necessarily encrypted) commands back and forth between the servers
>such that any one server could only invoke a certain narrow number of
>commands on another.  You could do this with ssl web servers, for
>instance.
>
>I suppose, from a security standpoint, I'm saying that you're breaking
>the "least privildge" principle.  Obviously, one server
>doesn't/shouldn't need to be a complete bonna-fide user on another
>server.
>
>Dave.
>




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