Q: Radius Server w/ appleTV

i have searched extensively for a setup that is similar to mine unfortunately i have not found a solution. I am using server 10.10 for radius auth. from an airport extreme.

since its now "one click" that works great for my computer users, but trying to set up an apple tv wirelessly is a pain. what/where is the cert. i need to install in the profile? do i need it still? the wireless profile gives the options for user/pass, is this all i need? thanks

server 10.10.2

3rd gen apple tv