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Radius Nac


I try to mount a NAC lab with the following architecture :

- 802.1x on switch ports

- ACSv5 with an external database (windows) for machine and user authentification

- ACS v5 do vlan assignement and it works great.

- Nac Manager

- Nac agent on workstations : tried with CTA or CAA

I try to add a posture validation to check for the presence of an antivirus.

So I insalled a NAC Manager and add a "External Policy Check" on my ACS policy rule.

The Endpoint has CTA or CCA for posture validation.

It seems ACS doen't even try to make the request to the manager. I get the following error in ACS :

STEP_79=15038 Skipping External Policy because of missing or malformed required attributes

My question is : What do I need to do external posture validation with acs5 to a Nac Manager.

The guide reference I used is :

Thanks for your answer