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After installation, you must initialize the authenticator for your specific user account. Run the setup wizard by typing: google-authenticator Use code with caution.

If you are looking for a to manage your 2FA codes directly from your Ubuntu desktop (rather than a phone), Google does not offer an official client. However, several high-quality open-source alternatives are available: How to Enable Google Authenticator 2FA in Ubuntu 24.04 download google authenticator for ubuntu

: Apply the changes by restarting the service: sudo systemctl restart ssh . 4. Desktop Alternatives for Ubuntu download google authenticator for ubuntu

: Usually, it is best to answer y to disallow multiple uses of the same token and to enable rate-limiting to prevent brute-force attacks. 3. Enable 2FA for SSH (Optional but Recommended) download google authenticator for ubuntu

: Open the SSH PAM file: sudo nano /etc/pam.d/sshd Add the following line to the top of the file: auth required pam_google_authenticator.so