 Timbuktu versions 5.1 and earlier initiate connections over UDP port 407, though versions 5.2 and later use TCP port 407.The program has integrated support for Secure Shell (ssh) tunneling for those who require additional security.Both the Mac and Windows versions can use a standalone user database or integrate with the respective platform's "standard" user database (OpenDirectory on the Mac, and Active Directory or NT Users on Windows).