along5664 , here is your strategy:
1. Get instructions on how to setup your Juniper RAS device as a radius server for PEAP (the ArubaOS user Guide has config information for Microsoft IAS, if you want to use that instead).
2. Setup your Juniper RAS device as a Radius Server (Configuration> Security> Authentication> Radius Server> Add)
3. Test your Juniper RAS device with user credentials using AAA test-server (Diagnostics> AAA Test-Server).
4. Run the WLAN/LAN Wizard (Config > WLAN Wizard) and configure a WPA2-AES SSID that points to the existing radius server that you setup in #2
5. Setup an a-record of "aruba-master" in DNS and point the ip address at your controller so that your APs find your controller.
6. When we get everything above, we can discuss the remote strategy.