Linux Babe shows you how to setup SSH two-factor authentication (2FA) on CentOS or RHEL Server.

Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server

This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator. It will greatly improve the security of SSH service on your CentOS/RHEL server.

Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server