I've been going back and forth on this off and on for a few weeks. I have a SonicWALL that can do SSO based on RADIUS accounting messages. I set it up in as a member in the "Remote RADIUS server groups" and set the connection request policies to enable forwarding of accounting messages to said group. No matter what I try, there is no traffic at all on UDP/1813 as set in as confirmed with wireshark. I've looked at many guides for setting this up and they all seem to be telling me to set things up in the exact way I have (I think.) I have tried on Server 2008, 2012R2 and 2016.
Any suggestions?