2 Factor Authetication and EAP-GTC

[Carl Pierre]

Hello:

I have recently been made a part of a project in which we intend to use
freeradius.
So far, FR seems to be the ideal tool except for one small issue: 2-Factor
Authentication.

Try as I might, I cannot seem to find any way to set up a multi-factor
solution using PEAP.
So I suppose my question is this: has anyone had any luck using EAP and
challenging the
user to enter some sort of OTP? I know that EAP-GTC is meant to do this,
but the meager
documentation I have on it does not give too much detail.

Regards
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