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Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. Windows Server operating systems include it as a set of processes and services . [ 1 ] [ 2 ] Originally, only centralized domain management used Active Directory.
The Security Account Manager (SAM) is a database file [1] in Windows NT, Windows 2000, Windows XP, Windows Vista, Windows 7, 8.1, 10 and 11 that stores users' passwords. It can be used to authenticate local and remote users. Beginning with Windows 2000 SP4, Active Directory authenticates remote users.
Starting with Windows Server 2000, Active Directory is the Windows component in charge of maintaining that central database. [1] The concept of Windows domain is in contrast with that of a workgroup in which each computer maintains its own database of security principals.
The software and operating system used to run a domain controller usually consists of several key components shared across platforms.This includes the operating system (usually Windows Server or Linux), an LDAP service (Red Hat Directory Server, etc.), a network time service (ntpd, chrony, etc.), and a computer network authentication protocol (usually Kerberos). [4]
When Windows 2000 was released, the NT domain as found in NT 4 and prior versions was replaced by Active Directory. In Active Directory domains running in native mode, the concept of the PDC and BDC do not exist. In these domains, all domain controllers are considered equals. A side effect of this change is the loss of ability to create a "read ...
Windows XP Service Pack 2 shipped with five ADM files (system.adm, inetres.adm, wmplayer.adm, conf.adm and wuau.adm). These are merged into a unified "namespace" in GPEdit and presented to the administrator under the Administrative Templates node (for both machine and user policy).
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Prior to Windows Vista, there was only one local group policy stored per computer. Windows Vista and later Windows versions allow individual group policies per user accounts. [6] Site - Any Group Policies associated with the Active Directory site in which the computer resides. (An Active Directory site is a logical grouping of computers ...