The Secure Shell — SSH — allows you to send secure, encrypted, communications between computers that is nearly impossible to crack. Here's how to use it in macOS.

PuTTY, a free and open-source telnet and SSH client, supports setting the acceptable authentication methods per connection and can be saved for future use.

I know this has led to flame wars in the past, but I was playing around with using SSH keys to authenticate to my home server this morning, and came to the conclusion that it is better to use ...