PowerShell Tag Archive

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This post contains some example WMI filters for you to use in Group Policy Objects (GPOs) to target and manage specific Windows Server versions like 2012R2, 2016 and Windows Server 2019.

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How to create an IP restrictions whitelist for your IIS FTP Server with Powershell.

When you set up a new public facing FTP server in IIS, it is important to properly secure it. Of course there’s authentication and authorization, but in this post I’ll show you how to configure an IP whitelist for FTP using PowerShell.

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Thank you Ronald as I needed exactly this today. Here is how to remove phantom application folders from websites in IIS using PowerShell.

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This might be specific to my Windows Server environment and PoSH scripting, but using -SeachBase with PowerShell’s Get-ADComputer gives me faster results. You can use this for your own advantage, here is a little example to speed up AD DS queries.

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You can install Servicing Stack Updates (SSU) for Windows Server 2016 and Windows Server 2019 using PowerShell, without downtime. Because they must be installed prior to your normal Windows Server security updates, you can install them anytime you want to during the day. Here’s a small PowerShell example to do so.

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Since WannaCry and Petya ransomware were spreading through Windows systems in 2017, it’s recommended to have Server Message Block version 1 (SMBv1) disabled in Windows clients and Windows Server. Now SMBv1 is not installed by default in Windows 10 1709 and Windows Server, version 1709 and later, but how can you be sure it is disabled in older Windows versions? Easy, use PowerShell.

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Ever wondered why Windows Server Update Services (WSUS) offers Flash updates for Windows Server? Adobe Flash Player is installed on Windows Server 2016 / 2019 if you have the Remote Desktop Session Host (RDSH) role installed. Yikes! I can imagine you want to delete Adobe Flash Player without deleting the RDSH role, and here is how.

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Just a quicky: Start all stopped application pools in IIS that have the autostart property set to true. Easily with appcmd or the IISAppPool cmdlet that’s available in the IISAdministration PowerShell module. And here is how.

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How to use the Windows PowerShell cmdlet Get-ItemProperty to work with file attributes.

Working with PowerShell’s Get-ItemProperty to get file attributes may boost your work productivity. It’s often easier to getting things done if you have a more generic way of doing something. Here is how to use Get-ItemProperty in PowerShell to perform and streamline day to day tasks like installing or updating software based on file versions.

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Ryan McFarland writes on his blog: “Privilege escalation always comes down to proper enumeration. But to accomplish proper enumeration you need to know what to check and look for. This takes familiarity with systems that normally comes along with experience. At first privilege escalation can seem like a daunting task, but after a while you start to filter through what is normal and what isn’t. It eventually becomes easier to know what to look for rather than digging through everything hoping to find that needle in the haystack. Hopefully this guide will provide a good foundation to build upon and get you started.”

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… and the guest server VM won’t reboot

If a Windows Server 2016 guest VM on Hyper-V hangs while stopping after Windows Updates, it might be caused by the recovery debug information type set. Especially when you have moved the Windows PageFile to a different partition/VHDX.

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There are a lot of hints & tips out there for troubleshooting SPNs, or Service Principal Names. Listing duplicate SPNs is fairly easy, just use setspn -X on your command-line and you’ll find out. But how do you find out which SPNs are used for which users and computers are used for this?

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Users can install and run multiple versions of the .NET Framework on their computers. When you develop or deploy your app, you might need to know which .NET Framework versions are installed on the user’s computer.

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Unzipping a file on your PowerShell command line may come in handy sometimes, even on your Windows 10 workstation. Use Expand-Archive for this, and all that is required is PowerShell 5.0+, or the .NET 4.5+ Framework to use System.IO.Compression.ZipFile.

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Compressed SQL Server backups can be verified in PowerShell using a handy PowerShell function. This comes in handy when you need to verify if existing SQL Server backups are compressed.

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