Increase in SSH attacks as of announcement of rtld bug

[Bill Moran]

In response to Mike Tancsa <mike at sentex.net>:

> At 07:51 AM 12/2/2009, Mohd Fazli Azran wrote:
> > >
> >Seem they use multi host and brute force. My network are every day
> >increasing the activity of attempt ssh login with multiple host +
> >multiple login with multiple password. seem i got many of this messages
> >
> Yes, thats the latest pattern I have been seeing-- distributed, slow 
> and coordinated.  Here is a sample from one of my honeypots.  The 
> only way to deal with them I found is to have multiple sensors 
> throughout my network and aggregate the data.  Otherwise, each IP 
> only appears every few hrs in the logs.

I deal with it by immediately blocking any host that generates an
"invalid user" error.

Of course, that won't work for everyone :(

-- 
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/

wmoran at collaborativefusion.com
Phone: 412-422-3463x4023

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