Monitor .NET CLR Garbage Collected heap from your web application

In order to let your .NET (web) application run smooth over a longer period of time, it is important to monitor the .NET CLR Garbage Collector (GC) and collection. Here is how you can monitor this in a Zabbix template using Powershell WMI / CIM and Win32_PerfRawData_NETFramework_NETCLRMemory Windows Performance Counters.

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Quickly check EnableTrailerSupport isn’t set in your network for http.sys (CVE-2022-21907)

If you want to find out fast if your IIS webservers have EnableTrailerSupport enabled for https.sys in the registry, here is a small PowerShell method. All you have to do is set the correct SearchBase.

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How to install IIS Web Management Service (WMSVC) using PowerShell in Windows Server Core

Here is a short post for you on how to install and enable IIS Web Management Service (WMSVC) in Windows Server Core, using PowerShell. This allows you to remotely manager your IIS webservers. If you want a graphical (or GUI) tool to install in Windows (Server or 11/10), see Install and setup IIS Manager for Remote Administration in Windows Server IIS.

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Adding VirtIO drivers to Windows Recovery Environment (Windows RE)

How to customize your Windows System Restore

If you need to add VirtIO drivers to your Windows Recovery Environment (Windows RE) to recover your Windows virtual machine, here is how. The following steps come in handy if you found out the hard way you don’t see any disks in Windows RE after a hard crash. As have I…

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Retrieve SSH public key from Active Directory for SSH authentication

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How to configure SSH public key authentication for Windows Server in Active Directory (AD)?

If you want to be able to log on to your Windows Servers through Win32 OpenSSH, you can make use of SSH public key authentication through a ~/.ssh/authorized_keys file. But if you have tens (hundreds) of servers and/or users, perhaps it’s easier to retrieve SSH public keys from Active Directory (AD). In this article I’ll explain how.

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How to add, list and remove IP addresses in Windows Firewall

Yesterday, I showed you how to block IP addresses in Windows Firewall using PowerShell. This comes in handy when blocking IP addresses that are brute-force attacking your servers. In this short post I’ll show you how to bulk add IP addresses in Windows Firewall, list an IP address and how to remove all IP addresses from Windows Defender Firewall with Advanced Security.

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Block brute force attacks on SQL Server, block IP addresses in Windows Firewall using PowerShell

This PowerShell solution blocks IP addresses that are trying to brute force your SQL Server logins, by blocking IP addresses in Windows Defender Firewall with Advanced Security. For the time being, some manual labor is involved, but it is still manageable. You can use this to create your own solution to block offending IP addresses in SQL Server’s firewall.

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Windows Defender: Turn off routine remediation

Long story short: During the transition of antivirus software to Windows Defender Antivirus (WinDefend), I don’t want Windows Defender remediation on threats it might find. Later, when I have more information about potential threats, I can always choose to remediate that threat, e.g. quarantaine or remove it. Unfortunately, there is no PowerShell cmdlet to configure this. Here is how to (temporarily) turn off routine remediation.

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How to enable HTTP/3 in Windows Server 2022

With the release of Windows Server 2022, there is now native support for hosting HTTP/3 services. Jeej! In short, here are the few steps you need to perform to enable HTTP/3 in Windows Server 2022. I can’t provide you with full details and how-to’s, as I don’t know your network.

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Increase WMI memory to support large volume of queries

How to optimize WMI performance and memory usage in Windows Server

Since I started expanding my Zabbix scripts and templates for monitoring Windows Server instances – AD, IIS and SQL Server – I found WMI was failing more and more. WMI stopped working: WmiPrvse.exe would just crash after hitting some memory limit of 512 MB. If you run into the same issue with Windows Management Instrumentation, here is how you can increase WMI Provider Service’s memory quota. Doing so resolved my issues.

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Install and setup IIS Manager for Remote Administration in Windows Server IIS

IIS Manager for Remote Administration in Windows 10

Learn how to install and configure IIS Manager for Remote Administration of your Windows Server IIS web server, in Windows 10. You can use IIS Manager to administer various components of your website through a graphical user interface (GUI), if it’s hosted in IIS.

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