Authentication Servers: Duo Security Proxy

[HBomb341]

I am running Duo Security Proxy on Windows (https://www.duosecurity.com/docs/authproxy_reference) with [duo_only_client] (Duo only authentication) integrated into pfSense (2.1.4-Release i386) via radius (System > User Manager > Servers > (Radius & Authentication).  Duo is logging and pushing its 2FA and approved / accepted when I attempt to authenticate (Diagnostics > Authentication) but pfSense is showing a “Authentication Fail”.  I have changed the /etc/inc/radius.inc timeout and maxretrys (https://forum.pfsense.org/index.php?topic=46150.0).  Is there a log on pfSense to see what is happening or any help would be greatly appreciated?

PS. Would love to see a package that integrates the proxy onto the system or integrates it natively.