Jan Reilink

Hi, my name is Jan. I am not a hacker, coder, developer or guru. I am merely a systems administrator, doing my daily thing at Vevida (part of Yourhosting) / CLDIN. If you want a more ad- and tracking-free website experience, please BackMe with a small donation (backme.org) or Paypal.

Retrieve SSH public key from Active Directory for SSH authentication

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 …

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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 …

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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 …

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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.

Getting more out your Windows Performance Counters monitoring for web applications – part 3

IIS AppPool Insights in Zabbix – because there is always more than one way This is part 3 about Zabbix monitoring for your websites and ASP.NET applications in IIS. This time I’ll show you how to get data from Win32_PerfRawData_PerfProc_Process counter, fast, for everey application pool This counter is notorious for its slowness, but you can get …

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