FreeRADIUS
The FreeRADIUS server is a daemon for Unix and Unix-like operating systems which allows one to set up a RADIUS protocol server.
Installation
Create your keys using:
# /etc/raddb/certs/bootstrap
You may want to investigate the ca.cnf, client.cnf, and server.cnf files to customize properties of
the generated certs, or simply create your own certs and keys if you want to sign them with a different CA - by default the bootstrap script generates a new CA to sign the keys.
Basic usage
Start freeradius.service.
Configuration
The configuration files can be found under /etc/raddb/.