Love the authenticator app and two-factor that you use, how does one implement it as after a short google there is very little info out there on it..
Ben
Definitely set up ssh key that has a password.
https://www.digitalocean.com/community/tutorials/how-to-use-ssh-keys-with-digitalocean-droplets
Here's a guide for two factor
https://www.digitalocean.com/community/tutorials/how-to-set-up-multi-factor-authentication-for-ssh-on-ubuntu-16-04
not quite what i was after, but I've since found authy.com which is pretty much what i'm looking for. My use case was to integrate 2F on the application for the user, not the sysadmin.
Thanks