Jan Reilink, Author at Sysadmins of the North

How to: Determine which .NET Framework versions are installed

To get an accurate list of the .NET Framework versions installed on a computer, you can view the registry or query the registry in code. Note that the .NET Framework consists of two main components, which are versioned separately. Here is how to list installed ASP.NET versions using PowerShell.

By Jan Reilink 07/09/2017Windows Server

PowerShell

How to unzip a file in PowerShell

Unzipping a file on your PowerShell command line may come in handy sometimes, even on your Windows 10 workstation. Use Expand-Archive for this

By Jan Reilink 30/08/2017PowerShell

MySQL

Restore single MySQL table from a full mysqldump backup file

Here are the steps required to restore a single MySQL table from a full mysqldump database backup file on the command-line. If you need to restore a single table from a full MySQL backup, you may find yourself wondering "how do I do that?". There are a few steps required, I outline them here for you to restore the contents of just one table back into the database from the mysqldump using Bash.

By Jan Reilink 21/08/2017MySQL

GNU Linux

Release hold queue email in Postfix – postsuper

Flush and delete the hold queue in Postfix or delete all mail from the deferred queue with Postfix postsuper command as explained in this post.

By Jan Reilink 06/08/2017GNU Linux

PowerShell

How to determine if a SQL Server backup is compressed?

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.

By Jan Reilink 06/08/2017PowerShell

plain FTP without TLS configured in an FileZilla Site Manager entry.

Windows Server

How to turn off the TLS default in FileZilla?

Here is how to disable TLS encryption in FileZilla and turn off the FTP over TLS default setting. Connect plain FTP without TLS.

By Jan Reilink 10/07/2017Windows Server

Web application security

Protect WordPress from brute-force XML-RPC attacks

Secure WordPress against XML-PRC attacks. This post gives you some insights about how you can create an IP whitelist for xmlrpc.php, on Windows Server and Linux Apache (web.config and .htaccess). And how you can block access to xmlrpc.php file.

By Jan Reilink 02/06/2017Web application security

WSUS Application Pool IIS Advanced Settings

Windows Server

WsusPool keeps crashing: stops again and again

Is Windows Server Update Services (WSUS) slow or is WSUSPool application pool constantly crashing or restarting? Are client computers checking for Windows Update erroring out with code 0x80244021? This indicates the client is unable to reach WSUS. Here is how to improve Windows Server Update Services (WSUS) availability.

By Jan Reilink 25/05/2017Windows Server

WordPress

Remove Jetpack email sharing service

Recently the WordPress Jetpack email sharing service is often abused by spammers. They use the Send to Email Address for sending spam. All these kind of "Tell a Friend" scripts are abused a lot. Here is how to disable email share service in Jetpack.

By Jan Reilink 19/05/2017WordPress

Windows Server

Merge multiple files into one new file in Windows

Merge or concatenate multiple files into one new file in Windows using the copy command in cmd.exe. Here is how.

By Jan Reilink 16/05/2017Windows Server

PowerShell

How to detect ethernet network speed in Windows

Detect the ethernet network speed using PowerShell or WMI is perfect for Windows Server Core. If you ever need to lookup the speed of your ethernet network card in Windows, on the command-line, use one of the following WMIC commands on your PowerShell prompt

By Jan Reilink 12/05/2017PowerShell

Windows Server

DisableNSRecordsAutoCreation with Dnscmd

This post explains how to restrict automatic NS resource record registration in Windows Server DNS using Dnscmd. This prevents Windows Server DNS to automatically create NS records for zones that it hosts on the server.

By Jan Reilink 02/05/2017Windows Server

WordPress

How to make Twenty Seventeen theme full width in WordPress

The default WordPress theme Twenty Seventeen's content width can be easily changed to full width. All you need is this bit of CSS.

By Jan Reilink 08/03/2017WordPress

Posts by Jan Reilink

How to: Determine which .NET Framework versions are installed

How to unzip a file in PowerShell

Restore single MySQL table from a full mysqldump backup file

Release hold queue email in Postfix – postsuper

How to determine if a SQL Server backup is compressed?

How to turn off the TLS default in FileZilla?

Protect WordPress from brute-force XML-RPC attacks

WsusPool keeps crashing: stops again and again

Remove Jetpack email sharing service

Merge multiple files into one new file in Windows

How to detect ethernet network speed in Windows

DisableNSRecordsAutoCreation with Dnscmd

How to make Twenty Seventeen theme full width in WordPress

Windows Server

Web applications

PowerShell