freeradius proxy configuration - Question

[ganesh nagpure]

Hi,

I have freeradius with proxy configuration i want to do following setup.

Some user will get aucc and auth by proxy radius and some will be locally.

1) Free radius server will accept request from RAS server ( Cisco) and forward to proxy radius and reply of proxy radius will be send back to RAS( Cisco) anduser will get connected.
2) If proxy radius send the accounting stop message then free radius will send this message back to cisco RAS to stop the user session and disconnect the user. 

Does free radius support this proxy fuctionality

One moe question on this is it possible to configure freeradius to modify the proxy message before sending and after sending by proxy server

Cheers
Ganesh