Yes, Google Authenticator installs as a PAM module. Additionally, a program is installed that helps users set their account up for use with Google Authenticator. The token that is used for OTP generation is stored in a file. (I don't remember what file exactly)

Google Authenticator might be a good solution in our situation, considering it is known to work and no outside server is required.

On Oct 17, 2011 6:27 PM, "Jeffrey Ollie" <jeff@ocjtech.us> wrote:
On Mon, Oct 17, 2011 at 5:54 PM, Kevin Fenzi <kevin@scrye.com> wrote:
>
> On the other hand google-authenticator doesn't have any server ability
> yet. ;(

I didn't think that google-authenticator needed a server to do the
authentication - you just need the app on your phone and some
configuration on the system that you want to access.

--
Jeff Ollie
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