How to Enable 2FA for SSH Logins on Rocky Linux, CentOS or RHEL

Learn how to config your Rocky Linux 8, CentOS 8 or RHEL 8 server such that it prompts for a two-factor authentication when you login via SSH key.
0:00​​​​​ Intro
2:03 Installing the necessary libraries
3:52 Setting up Google authenticator
7:00 Changes to sshd
8:22 Changes to pam.d
9:55 Testing the new config
10:49 Summary
WHO AM I:
I'm Bernhard, a software engineer working in Vienna, Austria. I make videos about technology, productivity and engineering.

[@SplineSoup]

This was an exceptionally helpful tutorial. Previously, I was using 'password + 2FA' on our servers, but this got me to our next implementation step of 'public key + 2FA' and cutting out password authentication completely. Definitely sound advice to make sure your public key is installed and functioning for SSH authentication before following these steps! Thanks!

[@eccoedd4511]

Thank you so much for the tutorial, It really helped!

[@gcinamaseko5652]

Spot on dude.... Thanks ✊

[@ahmedd9072]

Hello all, the video is very helpful. What can I do different with the configuration files if I want to use password+2FA? Thank you!