Sometimes, you want to be doubly sure that no one can get access to your VPS but you. If two-factor authentication (2FA) can work for a dashboard, why not for a VPS? In this tutorial, we'll talk about enabling SSH two-factor authentication (2FA) on an Ubuntu 16.04 VPS, via Google Authenticator (or another 2FA app of your choice) so that you can put another layer of protection on your VPS. It's imp