[SLUG] ssh certificate logins

["Phill O'Flynn" <phill@xxxxxxxxxxxxxxx>]

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