full-disclosure - Re: Any update on SSH brute force attempts?

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Message-ID: <Pine.GSO.4.43.0410180638300.27276-100000@tundra.winternet.com>
From: dufresne at winternet.com (Ron DuFresne)
Subject: Re: Any update on SSH brute force attempts?

On Mon, 18 Oct 2004, Dave Ewart wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Friday, 15.10.2004 at 17:53 -0400, Jay Libove wrote:
>
> > What are you doing/changing about your SSH configurations to reduce
> > the possibility of these attacks finding any kind of hole in the
> > OpenSSH software (that's what I run, so that's the only version I'm
> > particularly concerned about) ?  Are you doing anything at all?
>
> Attacks on my system seemed to be restricted to root, so I set the
> 'PermitRootLogin without-password' option, so that no root logins using
> a password were possible - must be RSA key.  I also switched to
> non-standard port.
>

Why not just disallow root logins directly, and force someone with a valid
user account to su after getting a shell?  It was my impression that was
more standard, and if one has to allow remote root directly, at least
restrict it to specific systems and users.  All the places I have worked
for forced the su after shell to root..

Thanks,

Ron DuFresne
-- 
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