I sometimes need to log in at a friend’s machine which is located about 20 miles from me. In the old days, this would be a job for the relatively insecure telnet.
But those days are gone. The Internet today is a hostile and insecure environment. Snap out of your GUI-induced haze for a few minutes, and come with me to the CLI. Let’s explore OpenSSH, which replaces telnet and does a whole lot more.
OpenSSH includes several programs:
ssh remote login client
sshd remote login server