Using OpenSSH
3Drage is carrying a pretty good introductory article on the subject of OpenSSH. OpenSSH was developed for the purpose of giving users more safety when using remote logins. Incase you've had your head under a rock for the last couple of years, telnet is NOT A SECURE CONNECTION METHOD. Eitherways, the article covers the basics of OpenSSH, including the specific methods of protection and how to make use secure logins. Definetely a good read especially for those who give a damn about the security of their machines. Check it out here.