How to Setup Two-Factor Authentication For SSH In Linux

By default, SSH already uses secure data communication between remote machines, but if you want to add some extra security layer to your SSH connections, you can add a Google Authenticator (two-factor authentication) module that allows you to enter a random one-time password (TOTP) verification…

Link: How to Setup Two-Factor Authentication For SSH In Linux
via http://www.tecmint.com

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