RADIUS-Server

https://www.univention.de/2016/09/kurz-erklaert-radius/

https://technet.microsoft.com/de-de/library/cc755248(v=ws.11).aspx

https://technet.microsoft.com/de-de/library/jj134164(v=ws.11).aspx

https://www.youtube.com/watch?v=KxzqQNMeNlA