If you're looking at setting up a freeradius service on a server, then I would recommend
Zentyal or
HowtoForge. Zentyal can even act as a Wi-Fi access point, if you have a supported card. If you have a particular distribution you'd like to install it on, you might have better luck checking the forums for that distribution.
You can find information on a freeradius client
here, or always try checking Google for your information.