SSH Two Factor Authentication With Google Authenticator
In the past, setting up true two-factor authentication (2FA) for SSH access has been a bit of a challenge. However, with the release of OpenSSH 6.2, full and proper support for 2FA is now available. This article explains how to set up SSH 2FA using Google Authenticator on Ubuntu, which greatly enhances the security of your SSH access.
Quick Start
To get started, follow these steps: