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Michael Reinders

Petri Contributor

Michael has been an 'IT Pro' since 1998. He has worked predominantly in the Windows world including client and server operating systems, on-prem systems engineering (AD, DNS, etc.), and over the last ten years or so has embraced and immersed himself in all things Microsoft 365 - including Exchange Online, SharePoint Online, Teams, OneDrive, and Azure Active Directory (AAD). He has written articles here on Petri based on these technologies and also published a larger series about 'Upgrading to Windows Server 2022' this past summer. Michael strives to help other IT Pros with getting more efficient (especially with PowerShell) in their day-to-day tasks and offering solid assistance on larger projects.

LATEST

Datacenter networking servers

How Immutable Backups Protect Against Ransomware

Last Update: Feb 20, 2024

Ransomware protection is one the most important topics for IT Pros and C-Level technology executives. Learn how immutable backups and immutable storage help to protect your organization against data corruption and loss, malware, viruses, and ransomware – and how to implement them.  This post is sponsored by Object First Veeam 2023 Ransomware trends report – most ransomware targets backups In May…

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Windows

How to Use the Icacls Command to Manage File Permissions

Last Update: Feb 19, 2024

Icacls is a Windows command-line utility that IT admins can use to change access control lists on files and folders. One of the most common tasks that an IT Pro or system administrator performs is modifying permission on a file server. Using the icacls command is a very efficient way to do that, and we’ll…

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Security

How to Minimize Your Active Directory Attack Surface

Last Update: Feb 16, 2024

When newly installed, Active Directory’s (AD) default configuration is designed to be easy to use. As a result, attackers can exploit AD to take over your entire network with relative ease. Here’s what you can do to further protect your organization by reducing your Active Directory attack surface. Securing beyond the default settings to reduce…

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Network Security

Top 10 Events to Audit in Active Directory to Uncover Security Risks

Last Update: Feb 15, 2024

Audit your Active Directory environment to ensure the security of your company’s most valuable assets. Here are the top 10 events to audit in Active Directory to identify risks. Why audit Active Directory? Active Directory provides authentication, account management, and authorization services that are critical for strong access governance. To quickly detect insider threats, organizations should audit the creation of new accounts and security groups, and…

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Network Security

What is Azure Active Directory? (Microsoft Entra ID) – A Comprehensive Guide

Last Update: Feb 12, 2024

Azure Active Directory (AD) is Microsoft’s cloud-based identity and access management (IAM) cloud service. Azure AD is generally seen as a move from on-premises IAM to the cloud. Learn more about Azure AD here. What is Azure Active Directory (Microsoft Entra ID)? Microsoft Azure Active Directory (Azure AD, AAD, Entra ID, etc.) is a cloud…

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microsoft security hero approved

What is Azure AD B2C?

Last Update: Feb 12, 2024

Azure Active Directory (Azure AD) B2C is a cloud-based customer identity and access management service that provides business-to-customer (B2C) Identity-as-a-Service. It allows organizations to secure and manage their customer-facing applications – so external parties can seamlessly sign up and log in. Learn more about the features and benefits of Azure AD B2C below. What is…

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What is Azure AD B2B?

Discover the benefits of using Azure AD B2B in your organization. Learn how it can improve collaboration and streamline access for external partners, and boost your users’ productivity, safely and securely. What is Azure B2B? Microsoft Entra B2B (formerly Azure AD B2B) is a feature/service within the Microsoft Entra ID that allows collaboration between your…

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PowerShell

How to Connect to Exchange Online Using PowerShell

Last Update: Dec 05, 2023

Exchange Online PowerShell is a command-line tool that allows you to manage your Exchange Online mailboxes and users. It can be used to perform a variety of tasks, such as creating and managing mailboxes, configuring mail flow rules, and managing user permissions. In this guide, we’ll show you how to install and connect to Exchange…

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Windows

How to Run Commands and Programs Remotely Using PsExec

Last Update: Nov 15, 2023

PsExec is a command-line utility program for Windows written by none other than Mark Russinovich, the current CTO of Microsoft Azure. It’s still being updated as part of the SysInternals suite of utilities. PsExec allows you to run programs locally, and, more importantly, on remote computers. You can even kick off similar commands on multiple…

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PowerShell

Get-ADComputer: The PowerShell Command for Managing Active Directory Computers

The Get-ADComputer PowerShell cmdlet is a powerful tool for managing AD computers. It can be used to retrieve information about computer objects, search for computer objects based on specific criteria, and perform various actions on computer objects. What is Get-ADComputer used for? Get-ADComputer is a PowerShell cmdlet that retrieves one or more computers from Active…

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