Multi-Factor Authentication (2FA/MFA) for SSH on Linux

Last updated on December 15, 2025

Overview of MFA for SSH on Linux

Rublon MFA for SSH (Linux) integrates with Linux Desktop and Server distributions like Debian and Ubuntu to add Multi-Factor Authentication (MFA) to every remote or local SSH login using a PAM module.

Supported Systems

• Debian (11, 12)
• Ubuntu (18.04, 20.04, 22.04, 24.04)
• Red Hat / CentOS / Alma / Rocky (8, 9) / Oracle Linux (8, 9)
• openSUSE Leap / SUSE Linux Enterprise Server 15 SP3*

* Rublon for SSH is not compatible with SUSE Linux Enterprise Server 11 and 12 due to their outdated versions of GCC. If this is a requirement for you, contact Rublon Support.

Supported Authentication Methods

Authentication Method	Supported	Comments
Mobile Push	✔	N/A
FIDO	–	N/A
Passcode	✔	N/A
SMS Passcode	✔	N/A
SMS Link	✔	N/A
Phone Call	✔	N/A
QR Code	–	N/A
Email Link	✔	N/A
YubiKey OTP	✔	N/A
RFID	–	N/A

Demo Video

Network Diagram