Security

Security is not an afterthought; it’s a core component of effective system administration. This guide provides PowerShell users with an essential toolkit for managing security-related tasks on Windows. We will cover three critical areas: first, how to handle administrator privilege elevation for both interactive and automated scripts using modern tools like gsudo. Second, you’ll learn to manage the Windows Defender Firewall directly from the command line to control network traffic. Finally, we’ll demystify the ‘Mark of the Web’ and show you how to use the Unblock-File cmdlet to safely run downloaded scripts and executables. This pillar post consolidates three key security topics into one definitive resource. ...

PowerShell is the cornerstone of modern Windows administration and a powerful tool in any cross-platform environment. But before you can leverage its capabilities, you need to get it installed—and that process can vary dramatically depending on your operating system and network connectivity. This definitive guide covers every scenario, from straightforward online installations on Windows and Linux to the specific steps required for air-gapped and secure offline environments. You’ll learn how to install PowerShell itself, as well as how to provision modules and other software in networks without internet access. ...

PowerShell Remoting is a cornerstone of Windows administration and automation. For years, it was synonymous with one protocol: WinRM. But with modern PowerShell and the ubiquity of SSH, we now have a powerful, cross-platform alternative. So, which protocol should you use? WinRM or SSH? This guide provides the definitive answer. We’ll explore the fundamental differences between the protocols, provide practical, step-by-step instructions for using both, and give clear recommendations for when to choose each one. ...

When diagnosing network connectivity issues, one of the most fundamental steps is to determine if a specific TCP port is open and listening on a remote host. A closed, blocked, or unresponsive port is often the root cause of application failures, and knowing how to test it is a critical skill for me. This guide provides a comprehensive overview of the most common and reliable methods to test port connectivity on Windows, from modern PowerShell cmdlets to classic command-line tools. ...