One of the critical parts of administrating your server is by logging into SSH as root. With the command line, you can roll up the proverbial sleeves and really dig in: installing software, changing system configuration, investigating problems, etc… But what about the security concern of logging into a system with all that control and you’ve only got a password? This is where Key authentication comes in.

Instead of typing in a password, you can generate an encrypted key pair that is used to authenticate you when logging in. The server will look to see if you have this key file More >