Penetration Testing mailing list archives

Re: Some new SSH exploit script?


From: "Adam.Chesnutt" <icetre () digitalfreezer net>
Date: Tue, 06 Jun 2006 20:51:31 -0400

All,

Similarly, I have a large number of hacktards trying to login as root on my servers.

I also have no need for apnic space to talk to my servers, most of my legitimate requests come from the US.

As such, I have a script that I wrote that I call killapnic, that goes out to the web, retrieves the apnic space and ipfw's all of it.

I have had great success with this. While it doesn't stop the local hackers, it does stop 95% of the cruft that comes my way.

I suppose if I could adapt my script to do both this, and nailing out 3 bad attempts from x ip. This seems trivial.

Adam

On 4 Jun 2006 00:04:15 -0000, anony () mouse com <anony () mouse com> wrote:
I strongly disagree with changing the port sshd listens on to "solve" this attack. It is completely unnecessary.

I've found some success with Fail2Ban, which adds in iptables rules
after a specified number of bad attempts, and I monitor the reports
for repetitive IP addresses or blocks, adding them to a permanent ban
list.  The number of failures per day decreased from 20K+ to under 50.


Jarrod

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This List Sponsored by: Cenzic

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