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I'm a little new to OpenVPN. I'm trying to get google authenticator to work with OpenVPN but I'm having a little trouble. Currently I'm tring to setup a radius server to run the authentication then have the radius server use google authenticator as part of the authentication process. I feel like there has to be a better way to do this. If anyone has done this before or knows a better way to go about it some guidance would be much appreciated.

Anthony Fortner
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    You want to use Google authenticator with OpenVPN that is to say add a factor to your OpenVPN account or you're setting up a radius server where you want to add a factor of authentication? – Parth Maniar Jul 31 '18 at 22:12
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    Why is this being downvoted? Its a reasonable Q. OP just wants to know how to add 2FA to OpenVPN using Google Authenticator. Indeed, radius is not needed but this is just part of the Q and is not being presented as a solution. – Benjamin Goodacre Nov 09 '18 at 03:41

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There is an extention made for OpenVPN for OTP (One Time Password). This extention includes Google Authenticator software tokens.

https://github.com/evgeny-gridasov/openvpn-otp

Inferno IV
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