That was written some 4 years ago and will work even today… But why would you use it?
It was more proof that PrivacyIDEA can be “plugged in” to an existing VPN/firewall configuration…
Today you don’t really need it. Drop the NPS and query PI directly from the VPN…
You need to start with explaining what you have, what you do now with it, what you want to accomplish…
Here is a discussion with the same “hardware” involved