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I'm wondering if it's possible to setup a VPN authentication to Cisco asa firewall by using gmail account? Each time me or any of my users want to use VPN we could use our gmail credentials and it would authenticate against google server? Is that possible? Would I need to setup a proxy server to handle this? I'm still thinking about this and I'm not sure if this is doable. If anyone has any experience or knows how and if this could be achieved please share with me you

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  • Google doesn't provide RADIUS or LDAP, so you'd have to hack together your own web-to-RADIUS system. (multi-factor authentication would be a problem)
    – Ricky
    Commented May 22, 2018 at 18:11
  • David, This would not be possible without some kind of programming on your part. As mentioned by Ricky Beam, Google doesn't provide RADIUS or LDAP therefor you would need to create your own system for implementing that - how you would go about doing it is not something I can answer. Have you tried Googling this and seeing if anyone else has tried to implement such a thing? I don't believe I've ever seen anyone do that. Why is it necessary for you to have such a thing?
    – user30351
    Commented May 23, 2018 at 9:48
  • Thanks for telling me this. I don't necessarily need this. This was just an idea my manager and I had and after extensive googling I couldn't find anything like that implemented by anyone. Thank you for your help.
    – David B
    Commented May 23, 2018 at 11:08
  • Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you can provide and accept your own answer.
    – Ron Maupin ♦
    Commented Dec 25, 2018 at 8:31

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As others have said, no, this isn't possible. However, you can at least set up your VPN to use 2FA if you want it to be more secure. Duo is what one of our contracts uses to accomplish this for IRS compliance. It's essentially just the Google Authenticator API in a different wrapper, and you generate your OTP on the Duo app on either a computer or phone.

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