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Tudor Davies

author Tudor is a techie turned manager who fights like mad to keep his tech skills honed and relevant. Everything from web hosting, networking, *nix and the like. Constantly developing and co-ordinating with others to make the web a better (and easier to use) place.

DenyHosts

Wednesday, 9th Feb 2011 Posted @ 20:09

Using Linux?
Are you the subject of SSH brute force attacks?

I have been for some time, so I installed DenyHosts on all my boxes, like this:

wget http://packages.sw.be/denyhosts/denyhosts-2.6-3.el5.rf.noarch.rpm
rpm -i denyhosts-2.6-3.el5.rf.noarch.rpm
chkconfig denyhosts on

edit your /etc/denyhosts/denyhosts.cfg
then

service denyhosts start

I have mine emailing me when it adds a new host to the /etc/hosts.deny file, so that I can check it occasionally.

Note: These instructions are specifically for RedHat & CentOS 5 installations

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