Manual SSH 2FA Is a Security Gap and Operational Burden
Relying solely on SSH keys or passwords for server access is a significant security vulnerability. Even with strong SSH keys, a compromised workstation can expose all your access. Two-Factor Authentication (2FA) for SSH adds a critical layer of defense, typically by requiring a Time-based One-Time Password (TOTP) from an app like Google Authenticator.
Manually setting up pam_google_authenticator on dozens or hundreds of servers, then individually configuring each user, creates massive operational overhead and inconsistency. This manual process often leads to skipped deployments, misconfigurations, and, ultimately, a weaker security posture across your infrastructure.
Why SSH 2FA Automation Is Crucial
Deploying SSH 2FA with Google Authenticator presents several challenges:
