https://gist.github.com/rfairley/41f4a8e8b4c13f19d748ba4b0e600cc5
- Create ssh key pair.
- Disable password authentication by ensuring that
PasswordAuthentication
andChallengeResponseAuthentication
are set tono
in/etc/ssh/sshd_config
- Allow external connections on JUMPHOST_PORT by configuring the firewall (any number above 1024 is good, 12345 used here)