Explore information related to active directory


Install FreeIPA on CentOS 8 - Step by step guide ?

This article covers how to install the FreeIPA on CentOS 8 system. In fact, FreeIPA is a free and open source identity management tool for managing centralized authentication along with account management, policy (host-based access control) and audit.


How to Open Required FreeIPA ports on Firewall ?

FreeIPA uses a number of ports to communicate with its services which must be opened on firewall to allow external connections. You can simply open all the required ports using the service names by running the command below:

$ firewall-cmd --add-service={freeipa-ldap,freeipa-ldaps,dns,ntp} --permanent
$ firewall-cmd --reload

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Updating Group Policy Settings on Windows Domain Computers - How to do it?

This article covers how to update Group Policy Settings on Windows Domain Computers. Group Policy provides centralized management and configuration of operating systems, applications, and users' settings in an Active Directory environment. A set of Group Policy configurations is called a Group Policy Object (GPO).


To force a group policy update on a domain:

1. Right-click the selected OU, and click Group Policy Update.

2. Click Yes in the Force Group Policy update dialog box. This is the equivalent to running GPUpdate.exe /force from the command line.

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Securing RDP Connections with Trusted SSL/TLS Certificates

This article covers how to secure RDP Connections with Trusted SSL/TLS Certificates. 


To Check What Certificate RDP Is Using

You can check the thumbprint of the certificate the server is using. Windows Key+R > Regedit {Enter} > Navigate to:

HKEY_LOCAL_MACHINE
> SYSTEM > CurrentControlSet > Control > Terminal Server > WinStations > TemplateCertificate

You can check this with the actual Certificate> Windows Key+R > mmc {enter} > File > Add/Remove Snap-in > Certificates > Local Computer > Open Certificates > Personal > Certificates > Locate the certificate you ‘Think’ RDP is using and you can compare its thumbprint with the registry key.

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Time Based Temporary Group Membership in Active Directory on Windows

Basically, Temporary Group Membership (Time Based) is the version of Active Directory in Windows Server 2016 introduces an interesting feature that allows you to temporarily add a user to an AD security group. In order to use the Temporary Group Membership, you need to enable the Privileged Access Management Feature in your Active Directory forest. Like with AD Recycle Bin (which allows you to recover deleted objects), you cannot disable PAM after it has been enabled.

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Use gMSA in Active Directory to launch services and tasks

This article covers how to use gMSA in Active Directory. When a gMSA is used as service principals, the Windows operating system manages the password for the account instead of relying on the administrator to manage the password. Group Managed Service Accounts (gMSAs) provide a higher security option for non-interactive applications/services/processes/tasks that run automatically but need a security credential.


The Install-ADServiceAccount cmdlet installs an existing Active Directory managed service account on the computer on which the cmdlet is run. The cmdlet also makes the required changes locally so that the managed service account password can be managed without requiring any user action.

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