you can configured your sshd's configuration in /etc/ssh/sshd_config
however in your case you might want to look at denyhosts
http://denyhosts.sourceforge.net/
Dean
Phill O'Flynn wrote:
Hi everyone
I am running a fedora server and currently using hosts.allow to
only allow ssh accesses from specific ip addresses. I did this because I was
getting
a lot of idiots from eastern Europe and Russia tring to crack my server.
This has been ok but now is prooving to be too restrictive. Can I get the
server to force certificate based logins only?? If so how do I do it?? Is this
the
best approach anyway??
Regards
Phill O'Flynn
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