Mailing List Message #92445
From: Matthew Black <>
Subject: Re: Case Study Request
Date: Tue, 04 Sep 2007 08:16:46 -0700
To: CommuniGate Pro Discussions <>
X-Mailer: CommuniGate Pro WebUser v5.0.9
On Fri, 31 Aug 2007 11:21:57 +0200
 Stefan Seiz <> wrote:
On 28.08.2007 5:21 Uhr, Dave Pooser <> wrote:

I've noticed
in the past that an SSH dictionary attack could DOS a 10.4.x server quite
effectively. (It wasn't a problem with 10.3.x and may no longer be a problem
with later 10.4.x revisions; I haven't felt the need to check.)

What i did which weirdly seemed to help is to have SSH not listen on the
default port 22 but another port. This seems to take care of a lot of the

Stefan Seiz <>
Spamto: <>

You should also be using the built-in Unix firewall
or TCP Wrappers and only listen to connections from
authorized clients, ignoring all others.

matthew black
california state university, long beach
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