Does IPFire support user google OTP (MFA) login (for https UI and ssh to green interface) ? how and where is it configured ?
No, it doesn’t.
Are there any MFA modules for Linux besides Google PAM module?
There is the OATH Toolkit that is used in IPFire for the OpenVPN OTP.
https://oath-toolkit.codeberg.page/
https://oath-toolkit.codeberg.page/man-oathtool.html
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