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michelep/TOTP

Created December 27, 2021 13:41
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TOTP authentication for SSH on Debian/Ubuntu servers
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TOTP
sudo apt update && sudo apt install --assume-yes libpam-google-authenticator
sudo vi /etc/ssh/sshd_config:
ChallengeResponseAuthentication yes
sudo systemctl restart ssh
sudo vi /etc/pam.d/sshd:
auth required pam_unix.so no_warn try_first_pass
auth required pam_google_authenticator.so
google-authenticator
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