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Re: Any update on SSH brute force attempts?
From: Jay Libove <libove-fulldisc () felines org>
Date: Sat, 16 Oct 2004 08:36:00 -0400 (EDT)
Hola a Colombia, Fabio!
y Cc: al listo -
Personal aside (others read on below please),
Many years ago, my father used to travel there (and many other places in
South and Central America) on business. My travels have been fairly wide,
but have not yet taken me to your country. Some day!
It's a good idea to instrument SSHD to log cleartext passwords for failed
login attempts. I don't have time to write the code myself, but if
someone else has it, I'll consider using it for a while. Anyone?
Here is the list of non-existent users attempted:
And the few present users attempted:
On Fri, 15 Oct 2004, Fabio wrote:
Date: Fri, 15 Oct 2004 22:01:29 -0400
From: Fabio <fabio () crearium com>
To: Jay Libove <libove () felines org>
Subject: Re: [Full-disclosure] Any update on SSH brute force attempts?
Would you mind to provide me the username that were tried?
have you ever modify your ssh daemon to log clear text passwords?
Jay Libove wrote:
A month or three back, I engaged in some conversation with others here on
full-disclosure about brute force login attempts several of us were seeing
on our SSH servers. Brute force isn't really the right description, as
each account is only tried a few times (root gets about 50). As we
surmised before, this still looks like an attack looking for certain known
Recently, a couple of times a week, I see repeats of this which now have
as many as fifty different accounts being attacked. (Almost none of which
exist on my server, and none of which will have common passwords
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?
Full-Disclosure - We believe in it.