tar zxvf freeradius-server-2.1.12.tar.gz ./configure make su - root make installbut reject the request.
edit /home/reze/freeradius-server-2.1.12/users
at top of file add testing Cleartext-Password :="123456"
and start radius #radius -X > output.txt
on another terminal type
#radtest testing 123456 127.0.0.1 10 testing123