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.

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 …

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How to optimize Umbraco 8 performance

Learn how to optimize a site running Umbraco 8 with a Microsoft SQL Server database back-end.

Out of the box, Umbraco is a well built and pretty fast content management system. However, it is important you perform some steps to further optimize Umbraco’s performance and loading speed. Here on Sysadmins of the North, I wrote about “11+ tips to optimize Umbraco CMS” earlier, and in this post I write about implementing them. On a just installed and running website.

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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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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 …

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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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