RID Master FSMO Role | RID (Relative Identifier) Master | Active Directory Tutorial | Part - 5

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Title: RID Master FSMO Role | RID (Relative Identifier) Master | Active Directory Tutorial | Part - 5

Description:
This is the 6th video in the Active Directory Tutorial. In this video we will learn aboout the RID Master FSMO Role.

What is RID Master FSMO Role?
The RID Master (Relative Identifier Master) is one of the five FSMO (Flexible Single Master Operation) Roles in Active Directory. It is responsible for allocating Relative Identifiers (RIDs) to domain controllers within a domain.

Key Functions of the RID Master:
1. Allocating RID Pools: Every object in Active Directory has a unique Security Identifier (SID), which is used to identify the object.
The RID is a part of this SID and is unique within a domain. The RID Master assigns blocks of RIDs to each domain controller to ensure that objects created by different domain controllers have unique SIDs.
2. Maintaining Uniqueness: The RID Master ensures there are no duplicates in the SIDs by controlling the distribution of RIDs to different domain controllers within the domain.

3. Role Location: The RID Master FSMO role is unique to each domain in a forest, meaning there is one RID Master for each domain.

4. Transferring the Role: If the RID Master goes offline or fails, domain controllers can continue to create new objects until they exhaust their RID pool. However, once the pool is depleted, new objects can no longer be created until the RID Master is back online or the role is transferred to another domain controller.

Location where the RID master keeps its RID Pool

The RID Master FSMO role on a specific domain controller manages the global pool of RIDs in this database.

The NTDS.dit file is the Active Directory database on the domain controller, storing all objects and attributes, including RID-related information.

Importance of the RID Master:
• The RID Master is crucial because without it, domain controllers would run out of RIDs, and they wouldn't be able to create new objects.
• If the RID Master is unavailable for a long period, and domain controllers exhaust their RID pools, they will be unable to create new objects (such as users or groups) until a new RID pool is allocated.
There is a limit to the Global RID Pool in Active Directory, and this limit is tied to the design of the Security Identifiers (SIDs) used in Active Directory. Each domain has a finite number of Relative Identifiers (RIDs) that can be assigned, meaning the Global RID Pool has a fixed maximum capacity.

Understanding the SID and SID Allocation in Active Directory
Transferring the RID Master Role
Seize the RID Master Role Using Ntdsutil

To watch all videos check the Playlist / Podcast:
▶️ Active Directory Tutorial: 🔗    • Active Directory Tutorial | Learn Act...  
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In this video we will discuss:
00:05:00 Introduction
00:04:00 Overview of PDC Emulator
00:13:50 Role of PDC Emulator in Kerberos Authentication
00:17:57 Role of PDC Emulator in Password Change and Account Lockout
00:32:04 Transferring and Seizing the PDC Emulator FSMO Role
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Learn Active Directory:
▶️ Active Directory Tutorial: 🔗    • Active Directory Tutorial | Learn Act...  
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