I observed this issue, AdventNet send authentication request to Radius Server only for those user which have entry inside WebNMS like emsadmin etc. Request may reject or accept depending upon entry defined inside Users table in Radius. 

 For those user which does not have entry inside WebNMS, there is no request going to Radius (Here itself authentication fails), despite entry defined inside" User" table inside FreeRadius.  Atleast Authetication should have been successful here since there is corresponding entry inside user table.

What need to be done in order to fix that issue so that authentication is successful in that scenario?

Thanks,

Harish