Cisco DUO 2FA plugin
Volumio 2 plugin to enable 2FA for SSH with Cisco DUO (free for personal use). Because changing the volumio password could break updates and plugin installation. This method hardens SSH security without breaking functionality; also you can determine whether or not it should fail-open or fail-close (e.g. when DUO can’t be reached).
Platform: Raspberry Pi & x86/x64
Depends on source code by Cisco DUO, build instructions can be found on GitHub
Github project: GitHub - Saiyato/volumio-duo-plugin: A DUO plugin compiled for Volumio (Debian Jessie) on 32-bit ARM platforms
File to download : https://github.com/Saiyato/volumio-duo-plugin/raw/master/volumio-duo-plugin.zip
Author: Saiyato
Status: stable
Forum post: [PLUGIN] Cisco DUO 2FA for SSH