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Getting Started with Active Directory Domain Services

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Introduction to Active Directory Users & Computers

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Adding a Second Domain Controller

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Active Directory Backups

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How to Administrate Active Directory with Windows PowerShell

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Administrating AD SS (Active Directory Sites and Services)

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Active Directory Trusts

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Modifying the Active Directory Schema

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Understanding Groups and Memberships

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Understanding Groups and Memberships in Active Directory

Active Directory groups and memberships are one of those things you MUST understand in order to administer Active Directory.

At a high level, Active Directory groups are collections of AD Objects. A group’s members can contain users, computers, other groups and more.

Let’s get started!

Create Group in ADUC

To create a group in Active Directory right-click on your desired OU and select New > Group:

The New Object - Group window will appear. 

Group Name

Now you need to specify the Group Name. This is the name that will be displayed for the group in Active Directory.

Group Name (pre-Windows 2000)

This will automatically populate the pre-windows 200 group name as well. As the name implies this name is compatible with older versions of Windows Server and is limited to 20 characters.

I am going to name my group “Test Group”

Group Type

There are two types of groups in Active Directory:

  • Security
  • Distribution

Security

A security group in Active Directory is used to assign permissions to resources with Group Policy.

Distribution

A distribution group in Active Directory is used to create email distribution lists.

We are going to use a Security group in this lesson.

Group Scope

For the group scope, we have three options:

  • Domain Local
  • Global
  • Universal

The scope generally only comes into play when you dealing with multiple domains and trusts. If you are in a single domain environment, nine times out of ten you are going to be fine picking a Global scope. We will still cover the differences here however.

The difference between these comes down to the possible members, memberships of the group, scope conversion (for example, can you change from Global to Universal) and grantable permissions.

If you want to see Microsoft’s documentation on this subject then it can be found here. I’m going to the simplest breakdown for you that I can below:

ScopePossible Membership ofGrant PermissionsScope ConversionPossible Members
Domain Local-Domain local groups-Within the same domain-To Universal (if no domain local members)-AD Accounts-Local groups-Global groups-Universal groups
^^ from the same domain, trusted domain, other forests and external domains.
Global-AD Accounts-Global groups
-Any domain in the same forest-Trusting domains and forests
-To Universal (if not a member of another global group)-AD Accounts-Other global groups
^^ from the same domain
Universal-Universal Groups
^^ Same Forest
-Domain Local groups-Local Groups (computer local not domain)
^^ Same forest or trusting forests
-Any domain in the same forest-Trusting domains and forests-To Domain Local (if not a member of other universal group)-To Global (if does not contain other Universal Group as a member)-AD Accounts-Global Groups-Universal Groups
^^ From any domain in the same forest

In our scenario, we are going to use Global because we are working in a single domain environment and we have no need to add users from other domains or forests.

Creating a group

Once you configued the settings, go ahead and click OK to create the group:

Now you should see the AD Group listed in the Active Directory OU that you created it:

Group Properties

Right-click the group and select Properties:

General Properties

From the General tab, you can convert the group or modify its general information. Click the Members tab.

Delete or add Group Members

Click the Members tab. From here you can see all of the members (if any) of this Active Directory group. Right now there are no members, so let’s add a member by clicking the Add button:

Now you can search for and add your desired user. I am going to use my user account which is “paul.hill”:

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jerry.ebanks(@jerrye)
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10 months ago

where is the link for rsat?

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Ricardo P(@ricardop)
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Reply to  jerry.ebanks
10 months ago