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Date:      Thu, 15 Feb 2001 13:18:45 +0100 (CET)
From:      Jan Conrad <conrad@th.physik.uni-bonn.de>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        <freebsd-security@freebsd.org>, Ralph Schreyer <schreyer@th.physik.uni-bonn.de>
Subject:   Re: Why does openssh protocol default to 2?
Message-ID:  <Pine.BSF.4.33.0102151309060.41000-100000@merlin.th.physik.uni-bonn.de>
In-Reply-To: <20010215033410.A86524@mollari.cthul.hu>

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On Thu, 15 Feb 2001, Kris Kennaway wrote:

> On Thu, Feb 15, 2001 at 12:30:20PM +0100, Jan Conrad wrote:
> > Hello,
> >
> > for quite a long time now I cannot understand why people encourage others
> > for using ssh2 by default and I wanted to ask the readers of this list for
> > their opinion.
>
> SSH1 has fundamental protocol flaws.  SSH2 doesn't, that we know of.

I knew that statement... Could you give me a good reference for a
detailed discussion on that?

>
> > Even though I believe people saying that ssh2 is much more secure for root
> > accounts and servers etc. I don't see why this should be true in general.
> >
> > Especially on bigger, say university networks as ours, where you often
> > find BNC segments or the switches are more or less acessible to everyone
> > (who really wants to...) in my opinion ssh2 is much more insecure as ssh1.
> >
> > My problem simply is that the id_dsa file is stored in user home dirs,
> > which typically are mounted via NFS. So ssh2, in contrast to ssh1 with
> > RSAAuthentication disabled, allows sniffers to access your system even
> > without *actively* attacking your system, all you need is the id_dsa
> > file....
> >
> > Even if that file is protected by a passphrase, you don't gain much...
>
> I don't understand your complaint.  If you don't want to use SSH2 with
> RSA/DSA keys, don't do that.  Use the UNIX password or some other PAM
> authentication module (OPIE, etc)

Sorry - I did not want to complain... (really :-)

What would you suggest for NFS mounted home dirs as a reasonable solution?
(To store keys I mean..)
>
> Kris
>
Jan




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