[Help-gnu-radius] clients file question

[Brent Kearney]

Hello,

Is the "raddb/clients" file necessary for a radius server?  That is, 
what is the default behavior of radiusd if this file is missing or empty?
Will it refuse authentication requests from localhost since localhost
isn't listed in raddb/clients?  Will it allow any external NAS to 
connect?

Also, is it sufficient to put 127.0.0.1 or "localhost" in the clients
file (as opposed to the IP address of a real network interface), if 
you want to allow localhost to request authentication?

Many thanks,

Brent