A Python based 2FA Time-based One Time Password script for authenticating in SSH.

Developed by Kyriakos Giannakis (kerk12gr@gmail.com).

Install:

0. git clone ...
1. Install the requirements: $ sudo pip install -r requirements.txt
2. Run the install script as root: $ sudo ./setup.sh
3. Restart the SSH service: $ sudo service ssh restart
4. Now each user needs to enable 2FA on his own account, by issuing: $ sshtotp --enable. When the command is run, a base32 Secret Key will be generated and saved in HOME/.totpKey. This needs to be copied onto a 2FA mobile app such as Google Authenticator or FreeOTP. Keep this key secret.

Whenever a user tries to log in, a prompt to enter a One Time Password will appear.

Note: The time on both the server and the mobile device needs to be in sync. We recommend using NTP for syncing the time.

Open Source Licences:

PyOTP. Copyright (C) 2011-2016 Mark Percival m@mdp.im, Nathan Reynolds email@nreynolds.co.uk, and PyOTP contributors.