Public Key Authentication with OpenSSH is preferred, as it’s a much stronger method of authenticating to your servers when compared to using password authentication. In fact, password authentication in OpenSSH should always be disabled. But before you can password authentication, you’ll need to set up public key authentication, and that’s exactly what we’ll do in today’s video.
Commands used in the Video
Check to see if a key is present already (list the storage)
ls -l ~/.ssh
Generate a key
ssh-keygen -b 4096
Follow the prompts to create the key.
Test SSH connectivity
Copy your key to a remote server