Generally OpenSSH is OpenSSH. It doesn't matter too much which Linux distro and architecture you're using (of course there will be differences between different OpenSSH versions).
Anyhow, I'd suggest reading the ssh_config and sshd_config man pages (type, e.g. "man sshd_config" -- no quotes). Remember, if you change the server's config file (/etc/ssh/sshd_config by default) you will need to restart the server for any changes to take effect. Restarting the server should not harm any existing connections.