Renaming NETBIOS name of Active Directory Error

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.

Working with Office 365 is my bread and butter in the last few months. I’m a System Architect and I am dropped in multiple projects, both new and old, to fix certain aspect and get out before anyone sees me. One of the common tasks I get is to provide some data about users stored in Office 365.

One of the new features I’ve worked on was connecting Diagrams with Tables. Someone suggested, and I thought it would be cool to be able to click on the Diagram node and find more details about it in a table next to it. But then I thought it would be even cooler if you could have multiple tables linked to one Diagram. For example, below, I’ve created two tables with Users and Computers and populated Diagram with that data.

Having a modern, secure infrastructure in 2019 is a requirement. You should implement BitLocker to make sure that in the event of stolen laptop data is not readily extractable and implementing LAPS is a must in a fast changing IT world. But I’m not here to convince you to those two security features. I’m here to show you an easy way to backup LAPS and BitLocker. While having everything stored in Active Directory is excellent, things can get complicated when you don’t have access to your Active Directory, or you restore an older version of it. You see, LAPS, for example, keeps only last Administrator password. This is great and all but what happens if you restore the machine from backup from 6 months back? Your password has already changed multiple times. During our testing of DR scenarios, we wanted to access the computer via their local Administrator credentials and we just couldn’t because that password was already gone.

While the title of this blog may be a bit exaggeration, the command I’m trying to show here does it’s best to deliver on the promise. What you’re about to witness here is something I’ve worked on for a while now, and it meets my basic needs. If you don’t have SIEM product or products that monitor who does what in Active Directory this command makes it very easy, even for people who don’t have much experience in reading Event Logs. If you’d like to learn about working with Windows Event Logs here’s a great article I wrote recently – PowerShell – Everything you wanted to know about Event Logs and then some.

In March 2020, Microsoft will release its monthly updates. With those updates, Microsoft will disable insecure LDAP Bindings, which is going to break a lot of your systems (hopefully not). But this was already communicated, and you know all about it, right? If not, you should read those two articles that can help you with understanding what is happening and when.

It’s no secret that nobody likes creating documentation. I don’t like it, and you don’t like it, even documentation lovers don’t like it. But while you can live without documentation, you really shouldn’t. And I am not talking here only about documentation that is only useful in the onboarding process of new employees or documentation concerning introducing someone to some concepts to get them easily start. I’m talking about documentation for your live environment where you know what you have, how you have set it up, but is still the same after one week, one month, or one year? Usually, not so much. And one of the worst mistakes admin can do is assume that his environment doesn’t change, things are as they were when they were set up.

PSTeams is a PowerShell module that helps simplify sending notifications to Microsoft Teams via Incoming webhooks. It’s easy to use and doesn’t require playing with JSON. Since version 2.0, it started to support Adaptive Cards; in version 2.1, I’ve added the ability to mention people. Today I’m introducing an easy way to send data as a table and a quick way to add a line break.

A few months ago, when I was working on PSWriteWord and PSWriteHTML, I thought to myself that in 2020 if I’ll get time, I’ll try to create PSWriteVisio. While I wasn’t sure I would be able to make it past some concept, it was in my plans for 2020. It’s still 2019 though, and while working on Testimo for Active Directory Healthchecks, I thought it would be nice to have a visual representation of network, forest schema or replication. I couldn’t get this idea out of my head. I thought on using PSGraph from Kevin Marquette to generate image and import that to PSWriteHTML but it was a bit tricky and PSGraph requires external software to work – and has some additional steps for Windows, Mac or Linux.