In a large enterprise an admin would need to keep track of all the domains in a AD forest, the domain names, the domain controllers (DC) , their IPs, and what FSMO roles does a DC hold. Wrote a little script to just do that…
One of my clients had a problem with processing GPO on client computers. Different computers applied different settings from the same GPO but from different domain controllers. All tests related to replication was successful, all GPOs are applied, but replication between domain controllers was a problem, and because of that most clients had a different … Read more
I had a request recently to provide an inactive user report for the past 60 days. Basically, find out which accounts have not logged in for the past 60 days so action can be taken against them. The request was for a multi domain forest which queries every domain controller and gets the latest lastlogon … Read more
Came across a unique request to get primary, secondary, and tertiary DNS values for multiple computers/servers across the domain. I started writing the script and got what I wanted. Now this started off as just to query for DNS Server information, but then I thought to add other pieces to get myself a good Network … Read more
Ran into a situation at a client location where in Active Directory, the security permissions applied to an OU were not getting inherited permissions on to the objects. Basically, security inheritance was broken.This causes a problem when the administrative accounts or groups needing to modify an attribute on the AD object throw errors, or are … Read more
When running a DCDiag at a customer site today I had the following error occur: It is a bug when we pre-create a computer account in ADUC and then promote it as DC, the UserAccountControl is set to 532512 instead of the default 532480. You need to manually set the vaulue to 532480 in ADSIEDIT.MSC. … Read more
Getting a know a new environment for a new client and I a quickly needed information about all domain controllers in the entire forest. Wrote a small little script to provide me all the information I needed:
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Import-Module ActiveDirectory function Get-AllDCsInForest{ [CmdletBinding()] param( [string]$ReferenceDomain = $env:USERDOMAIN ) $ForestObj = Get-ADForest -Server $ReferenceDomain foreach($Domain in $ForestObj.Domains) { Get-ADDomainController -Filter * -Server $Domain | select Domain,HostName,Site, IPv4Address, OperatingSystem, OperatingSystemVersion } } Get-AllDCsInForest| Export-Csv -Path C:\Scripts\AllDcs.txt -NoTypeInformation |
When troubleshooting domain controller related issues from a client side there are many things that needs to be checked. Few items that need to checked: Review if DCs are hardcoded in the application residing on the client (if application related) Ports are opened from the client to the DC Check if the DCs in the … Read more
If you want to replicate all Domain Controllers, then you have to start replication on each of them separately. This may take a while. To save time there is an easier way to force replication on all Domain Controllers of all Active Directory Sites. Log on to one of your Domain Controllers. Start Windows PowerShell … Read more
Working on a security project and I needed a reference guide as to what cipher suites are supported on what OS. So I have documented a list of the default cipher suites and their preferred order for every Windows Server version. These were gathered from fully patched operating systems.