Ubuntu 14.04 + FreeRADIUS + WiFi
Looking for a tried and proven solution for using enterprise-level encryption for your Business (or indeed your Home) which is completely free-of-charge and makes use of Open Source software? Here is one such solution which I use on a Business level.
The WiFi hardware I use is the UniFi AP hardware, with the FreeRADIUS/Ubuntu setup running on a VM on Proxmox PVE.
Here is the solution: LINK