Configuring a proxied and local authentication

[Dusty Doris]

> I did configure one radius server (A) to proxy incoming requests to an other
> radius server (B, this later one using pam).
>
> First question:
> I don't find a way to add a NAS-Identifier value inside the proxied
> request, so that B server could check it...

preproxy_users will do this for you.

> How to configure the A server so that if B rejects the request, then
> A will check in a local user base (through pam) ?

Not sure on that one, will have to defer to someone else.