*[http://linux.about.com/library/cmd/blcmdl5_ssh_config.htm ssh_config]

*[http://linux.about.com/od/commands/l/blcmdl5_sshdcon.htm sshd_config]

* [[IPTables]] Reference

* [http://support.suso.com/supki/SSH_Tutorial_for_Linux A good ssh tutorial]

* [http://it.toolbox.com/blogs/locutus/shh-securing-ssh-howto-10640 A good HOW-TO to make ssh more secure]