active directory

repadmin /replsummary

17 kwi: Active Directory Replication Summary to your Email or Microsoft Teams

Active Directory replication is a critical process that ensures the consistent and up-to-date state of directory information across all domain controllers in a domain. Monitoring this process is important as it helps identify any issues that may arise and resolve them quickly. One way to monitor Active Directory replication is by using the Repadmin command-line tool. Repadmin provides a wealth of information about the replication status and health of a domain. However, manually checking the Repadmin output can be time-consuming and tedious, and running it manually every 30 minutes just to check if everything is great doesn’t seem like a great idea. While PowerShell has its own commands around replication I’ve not found something as fast and reliable as repadmin /replsummary.
Password Quality Scan

28 maj: Strengthening Password Security in Active Directory: A PowerShell-Powered Approach

PasswordSolution uses the DSInternals PowerShell module to gather Active Directory hashes and then combines that data into a prettified report. If you have ever used DSInternals, you know that while very powerful, it comes with raw data that is hard to process and requires some skills to get it into a state that can be shown to management or security.
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07 sie: Reporting group membership for critical Active Directory groups

I work a lot with Active Directory-related tasks. One of the tasks is to know the group membership of critical Active Directory Groups such as Domain Admins, Enterprise Admins, Schema Admins, Event Log Readers, and a few others that are a bit less known. As I did it, I got bored of typing the group names repeatedly and decided that enough was enough and there must be an easier way for me to do that.
Duplicate DNS entries

26 lip: Finding duplicate DNS records by IP Address using PowerShell

In my earlier blog post, I showed you a way to find duplicate DNS entries using PowerShell, but the focus was on finding duplicate entries based on hostname. But what if you would like to find duplicate entries based on IP Addresses? This was the question I was asked on Reddit, and I thought it was a legitimate request, so today’s focus will be on transposing table output from earlier functions to present data differently. 
Get DNS Duplicate Entries

24 lip: Finding duplicate DNS entries using PowerShell

Today’s blog post is about Active Directory-integrated DNS and how to find duplicate entries. By duplicate, I mean those where one DNS name matches multiple IP addresses. While some duplicate DNS entries are expected, in other cases, it may lead to problems. For example, having a static IP assigned to a hostname that later on is also updated with dynamic entries.
Duplicate SPNs

07 gru: Finding duplicate SPN with PowerShell

Duplicate SPNs aren’t very common but can happen in any Active Directory as there’s no built-in way that tracks and prevent duplicate SPN’s. One has to either know all SPN’s in the environment, track them or check each time whether it already exists or not. Things get more complicated with larger Active Directory environments as people change, new apps are added, old apps are forgotten, but SPNs prevail.
Testimo

28 lis: Active Directory Domain Services could not replicate the directory partition – The replication operation encountered a database error

If you ever encounter an error while trying to create a new domain within a forest saying, „The replication operation encountered a database error,” it makes you sweat a bit. Your brain tells you it will be a nightmare to fix, do I have proper backups to make it happen, and the question „why now” shows up.
LDAP and LDAPS verification PowerShell

02 mar: Monitoring LDAPS connectivity/certificate with PowerShell

Some time ago, I wrote a blog post on checking for LDAP, LDAPS, LDAP GC, and LDAPS GC ports with PowerShell. It mostly works, but it requires a tad bit of effort, and it doesn’t cover the full scope that I wanted. Recently (well over 3 years ago), Chris Dent shared some code that verifies the LDAP certificate, and I thought this would be good to update my cmdlets to support just that with a bit of my own magic on top.