Simple Basic setup public IP on radius server behind router

RouterOS Beginner Basics
1

Hi,
I’ve got a radius server internally I need it to be assigned a public IP.

The setup:

Modem–> router/hotspot–> wireless bridged AP–> wireless bridged station–>switch–radius server.
How do I put an public IP on the rad server?

I’d like to have the box physically available otherwise I’d put it next to the router.

Thanks,

2

Either route some public IPs that way, or configure NAT on the edge where a public IP is available, and make sure all routers in between have the necessary routes to the private address you translated to.