I have two linux servers hosting DNS and DHCP on my network with a static IP assigned to my Mac Mini Server. I also have a Ubiquiti Unifi AC wireless access point. My Mac Mini Server (MMS) is hosting Open Directory and Time Machine. I want to enable Caching and RADIUS support. 1) If the MMS does not host DNS/DHCP, will Caching still work? 2) Since I do not have an Airport Extreme, will the MMS still support RADIUS? How can I setup RADIUS w/o Airport Extreme? Thanks!