Newbie question: what is best #mfa #authentication method for #offline networks? I am playing around with a lab environment where I want good mfa inside but don’t want it to connect to the internet. My current point of view is: I can not place #Fido there since it „needs“ internet in many ways.. right? . My current way of thinking is i build a PKI into this network and use it with #yubikey acting as a Smartcard but not #u2f or #fido2 . Am I wrong ? Is there better options?