Security Incidents mailing list archives

Re: SSH probe attack afoot?


From: Stephen Warren <swarren () wwwdotorg org>
Date: Mon, 07 Feb 2005 16:55:50 -0700

On 6 Feb 2005, at 15:09, Bernie Cosell wrote:

We're now getting hammered with the third round of ssh probes in the last
four days [one from CA, one from Brazil and one from Virginia].  I was
wondering: is there some virus or the like floating around now that
leaves an ssh-hammering zombie in its wake?  Or is it just coincidental
that we have gotten three floods?

I got fed up with seeing this kind of thing in my logs.

So, I switched SSH to a non-default port, and it all went away:-)

Sometimes, security through obscurity is very useful. Now at least I have a small SSHD logfile, so I'll pay more attention to it if something shows up in it.

Of course, depending on your user-base, you might have to spend a lot of time on user-education after this change.


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