I'm interested in the steps you make when you need to set up a new Linux (preferably CentOS) server, putting a emphasis on security, like changing SSH port, limiting root SSH access, etc.
closed as not a real question by mdpc, Iain, Zoredache, sysadmin1138♦ Nov 14 '11 at 18:42
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I usually don't change SSH port, because it complicates setups (now I should remember which port I use on which server and I have 20+ of them) and confuses me and my customers. I use DenyHosts instead, it is available from an EPEL repo. It's also good to disable password-based authentication in favor of key-based in