Active Directory (AD) is a directory service created by Microsoft for Windows domain networks. It is included in most Windows Server operating systems.
Active Directory provides a central location for network administration and security. Server computers that run Active Directory are called domain controllers. An AD domain controller authenticates and authorizes all users and computers in a Windows domain type network—assigning and enforcing security policies for all computers and installing or updating software. For example, when a user logs into a computer that is part of a Windows domain, Active Directory checks the submitted password and determines whether the user is a system administrator or normal user.
Active Directory makes use of Lightweight Directory Access Protocol (LDAP) versions 2 and 3, Kerberos and DNS.
Read more about Active Directory: History, Physical Matters, Replication, Database, Single Server Operations, Trusting, Lightweight Directory Service, Unix Integration
Famous quotes containing the words active and/or directory:
“He crafted his writing and loved listening to those tiny explosions when the active brutality of verbs in revolution raced into sweet established nouns to send marching across the page a newly commissioned army of words-on-maneuvers, all decorated in loops, frets, and arrowlike flourishes.”
—Alexander Theroux (b. 1940)
“Although then a printer by trade, he listed himself in this early directory as an antiquarian. When he was asked the reason for this he replied that he always thought every town should have at least one antiquarian, and since none appeared for the post, he volunteered.”
—For the State of Iowa, U.S. public relief program (1935-1943)