I'm consulting for a company that has RADIUS and it is in need of replacement. I"m helping them search for the best solution for a replacement appliance.
What are you using for RADIUS? What do you recommend?
RADIUS is used in many applications these days .. I have internal radius authentication for my wireless access points, users, and network equipment using Windows Network Policy Server (very small environment).
You must also look at radius vs tacacs+
TACACS+ and RADIUS Comparison - Cisco
I can't personally make any other suggestions or recommendations of products that we own and use. If they are a large enterprise site .. you might check out WatchGuard Fireware v12.5 or FreeRadius. I would look beyond just Radius and come up with a packaged deal to include 2FA and MDM - ,,, then .. I would check out Ping Identity .. unbelievable product .. would have it here .. but there are too many obstacles to overcome!
Extensibility