AD Object Permissions, How To Hide AD Data, Impact On Ldap Search And browsing
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How to Hide AD Data from Unauthorized Users and Its Impact on LDAP Search and Browsing
Active Directory (AD) is a directory service that stores information about objects such as users, computers, groups, and organizational units in a hierarchical structure. AD data can be accessed by authorized users through various methods, such as LDAP search and browsing. However, sometimes you may want to hide some AD data from certain users or groups for security or privacy reasons. For example, you may want to prevent a user from seeing the members of a sensitive group or the attributes of a confidential object.
In this article, we will show you how to hide AD data from unauthorized users by using AD object permissions. We will also explain how this affects LDAP search and browsing operations and what are the potential risks and benefits of hiding AD data.
What are AD Object Permissions
AD object permissions are the rules that determine who can access, modify, or delete an AD object or its attributes. AD object permissions are inherited from the parent container by default, but they can be modified or blocked at any level of the hierarchy. AD object permissions can be assigned to individual users, groups, or special identities such as Everyone or Authenticated Users.
AD object permissions are composed of two elements: access rights and access control entries (ACEs). Access rights are the specific actions that can be performed on an AD object or its attributes, such as Read, Write, Delete, or Full Control. ACEs are the individual entries in an access control list (ACL) that grant or deny access rights to a specific security principal (user, group, or special identity).
To hide AD data from unauthorized users, you need to modify the ACL of the AD object or its attributes and add ACEs that deny the Read access right to the users or groups that you want to exclude. You can use tools such as Active Directory Users and Computers (ADUC), Active Directory Administrative Center (ADAC), or PowerShell to manage AD object permissions.
How to Hide AD Data Using ADUC
ADUC is a graphical user interface (GUI) tool that allows you to manage AD objects and their properties. To hide AD data using ADUC, follow these steps:
Open ADUC and locate the AD object that you want to hide.
Right-click on the object and select Properties.
Click on the Security tab.
Click on the Advanced button.
Click on the Add button.
Click on Select a principal.
Type the name of the user or group that you want to deny access to the AD object and click OK.
In the Permission Entry dialog box, select Deny for the Read permission under Basic permissions.
If you want to hide specific attributes of the AD object, click on Show advanced permissions and select Deny for the Read properties and Read permissions under Property permissions.
If you want to apply the permission change to all child objects of the AD object, select This object and all descendant objects under Apply to.
Click OK to close the Permission Entry dialog box.
Click OK to close the Advanced Security Settings dialog box.
Click OK to close the Properties dialog box.
How to Hide AD Data Using PowerShell
PowerShell is a command-line tool that allows you to perform various tasks on AD objects using scripts or cmdlets. To hide AD data using PowerShell, follow these steps:
Open PowerShell and import the ActiveDirectory module by running this command: Import-Module ActiveDirectory
Get the distinguished name (DN) of the AD object that you want to hide by running this command: $objectDN = Get-ADObject -Filter {Name -eq \"\"} Select-Object -ExpandProperty DistinguishedName
Create a new ACE that denies Read access to the user or group that you want to exclude by running this command: $denyACE = New-Object System.DirectoryServices.ActiveDirectoryAccessRule (\" aa16f39245