We use RADIUS proxy with a host of different devices. I have been troubleshooting a problem with a Raritan PDU and their tech support. When I authenticate directly with MS NPS it works fine but authentication fails with the DUO proxy.
It transpires that Raritan have made RADIUS accounting mandatory in their implementation of their devices RADIUS support. Am I correct in thinking that there is no way I can get this working with the DUO proxy?