You have a server with Freeradius, users are in a Mysql database.
It is necessary through the site, which is located on another server to create a user, for example on the wordpress.
How to create/remove/block user freeradius ?
1) Open the database to the outside world and using sql to create users. Smuschyaet access to the database from outside.
2) brute force to check rlm_rest module for freeradius and configure the rest api.
Method of sorting thanks to the "wonderful" documentation for this module: "FIXME"
Link to of. documentation: https://networkradius.com/doc/3.0.10/raddb/mods-av...
3) Write your squeak/program with the api. And twist it on the server.
4) Google, Google and once again Google. <--- now I'm here.