What ever happened to one time pass codes for OpenVPN?
I saw this topic: https://forum.pfsense.org/index.php?topic=45293.0
Was one time passcodes ever made for pfsense?
Well, considering that the link in that post goes to a dead Drupal site, I'd say that we're probably all better off.
Getting something like this going is probably a better long-term solution anyway.