google

Enable Google Authenticator 2FA for SSH

Ubuntu: $ sudo apt-get install libpam-google-authenticatorDebian: $ sudo apt-get install libqrencode3 $ wget http://ftp.us.debian.org/debian/pool/main/g/google-authenticator/libpam-google-authenticator_20191231-1_amd64.deb $ sudo dpkg -i libpam-google-authenticator_20191231-1_amd64.