It turns out that adding an extra level of security to fedora 17 is quite easy.
The google-authenticator PAM module is easily installed via yum. Once installed, you simply have to edit the /etc/pam.d/sshd configuration to require the pam module as per the instructions located here.
As the user you wish to use two-factor authentication with, you need to run the google_authenticator bin from the command line. It will create an address that you can navigate to and take a picture with the google-authenticator app on your andriod device.
Voila, two factor authentication on your sshd!
Enjoy.
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