Samba4 is an attempt to implement an Active Directory compatible Domain
Controller.

In short, you can join a WinNT, Win2000, WinXP or Win 2003 - 2016 member
server to a Samba4 domain, and it will behave much as it does in AD,
including Kerberos domain logins where applicable.

WWW: https://www.samba.org/