realm --help

Hi, I have a realm as "vsnl.net" given to all the users (approx 2800 users), with different passwords. I have defined it in the "proxy.conf" as realm vsnl.net { type = radius authhost = local accthost = local } So, is this correct, as i am not defining any secret above because it is different to all the users, and the radius server itself will reply to the authentication request. Also is there a way by which I can migrate from Merit Radius to Freeradius seamlessly, as cuurently what I am doing is I have a perl script to convert the users file of Merit Radius to the syntax that Free Radius has and then use it. Thanks and Regards, Dave.