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Connect to a KVM host through an ssh tunnel and arbitrary port in Windows 11 and WSL 2

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If you need to connect virt-manager to a KVM host over ssh in Windows, then Windows 11 and WSL 2 made things a whole lot easier for you. Even if you need to connect virt-manager through an ssh tunnel and arbitrary port because your network is reachable only through a bastion host with ssh key authentication. Here is how.

YubiKey support in OpenSSH for Windows 11 and Windows 10

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Since Win32-OpenSSH version 8.9.1.0p1-Beta there is decent support for FIDO/U2F hardware authenticators. This means we can use a YubiKey with Windows 11 and Windows 10, w00h00! In this post, I’ll show you how to install Microsoft OpenSSH client in Windows 11 and Windows 10, and how to configure your YubiKey. If you follow this guide and all goes well, you no longer need additional tools like Git Bash or MremoteNG/MobaXterm.

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Monitor .NET CLR Garbage Collected heap from your web application

Are you worried about your .NET webapp running out of memory? 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. The what? The .NET Common Language Runtime Garbage Collector. Here is how you can monitor this in a Zabbix template using Powershell WMI / CIM and Win32_PerfRawData_NETFramework_NETCLRMemory Windows Performance Counters.

Retrieve SSH public key from Active Directory for SSH authentication

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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 user SSH public keys from Active Directory (AD). In this article I’ll explain how.

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