Palo Alto RADIUS authentication against Microsoft NPS is broken

Showing results for 
Show  only  | Search instead for 
Did you mean: 
Please sign in to see details of an important advisory in our Customer Advisories area.

Palo Alto RADIUS authentication against Microsoft NPS is broken

L2 Linker

Has anyone managed to get authentication on PAN-OS 7.0 working with microsoft NPS servers?


Since version 7.0 authentication against our microsoft NPS radius servers is broken. Because the firewall now always first tries CHAP instead op PAP (see this article) and microsoft NPS always replies with a ACCESS-REJECT massage (see this article -> item 9).


As it's insane to start storing our AD credentials with reversible encryption I guess microsoft NPS isn't compatible anymore with Palo Alto? Or am I missing something here?


What is the PAN-OS on the firewall?

It will work on PAN-OS 7.0.4. You dont have to go in configure mode.


admin@fw63> set authentication radius-auth-type chap


Hope this helps!


Merry Christmas 🙂

  • 16 replies
Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!

The LIVEcommunity thanks you for your participation!