of Unix and is used for user administration and configuration and software management; previously known as Novell Directory Services. Red Hat Directory Server: Red Hat released Red Hat Directory Server, acquired from AOL's Netscape Security Solutions unit, as a commercial product running on top of Red Hat Enterprise Linux as the community-supported 389 Directory Server project. Upstream open source project is called FreeIPA. Oracle Internet Directory: (OID) is Oracle Corporation's directory service, compatible with LDAP version 3. Sun Java System Directory Server: Sun Microsystems' directory service OpenDS: Open-source directory service in Java, backed by Sun Microsystems Oracle Unified Directory: (OUD) is Oracle Corporation's next-generation unified directory solution. It integrates storage, synchronization, and proxy functionalities. IBM Tivoli Directory Server: Custom build of an old OpenLDAP release Windows NT Directory Services (NTDS), later renamed Active Directory, replaced the former NT Domain system. Critical Path Directory Server OpenLDAP: Derived from the original University of Michigan LDAP implementation (like Netscape, Red Hat, Fedora and Sun JSDS implementations), it supports all computer architectures (including Unix and Unix derivatives, Linux, Windows, z/OS and a number of embedded-realtime systems). Lotus Domino Nexor Directory OpenDJ - a Java-based LDAP server and directory client that runs in any operating environment, under license CDDL. Developed by ForgeRock, until 2016, now maintained by OpenDJ Community Open-source tools to create directory services include OpenLDAP, the Kerberos protocol and Samba software, which can function as a Windows domain controller with Kerberos and LDAP back ends. Administration is by GOsa or Samba SWAT. Using name services Unix systems Name services on Unix systems are typically configured through nsswitch.conf. Information from name services can be retrieved with getent. See also Access control list Directory Services Markup Language Hierarchical database model LDAP Data Interchange Format Metadirectory Service delivery platform Virtual directory References Citations Sources Computer access control Computer access control protocols