Samba 4 Technology Preview 2 is released today. Technology Preview 1 was released on January. Samba is an open source software that allows Unix/Linux system to serve as a file and print server in Windows network. The main feature in Samba 4 is the support for Active Directory logon protocols used in Windows 2000 and above.
The release notes emphasizes that this is a Technology preview to allow users, managers and developers to see how they’ve progressed and to invite feedback and support. They warn that this should not be run on production servers and is not secure.
Samba 4 Technology Preview includes basic Access Control List (ACL) protection on the main user database, but due to time constraints, none on the registry at this stage. We also do not currently have ACLs on the SWAT web-based management tool. This means that Samba 4 Technology Preview is not secure.