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Tag: Security

Send email with PowerShell

14/03/202326/03/2023 Jan Reilink

In this post I provide you with a small PowerShell function you can use to send email over a TLS secured SMTP connection with SMTP authentication. As a framework you can use in your own scripting and extend it. You can even create a PowerShell module of it.

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Access blocked

Are you in my blocklist?

12/02/202324/03/2023 Jan Reilink

Is your IP address in my WordPress .htaccess block list? Here are IP addresses I block manually because of comment spamming.

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OpenSSH logo

YubiKey support in OpenSSH for Windows 11 and Windows 10

14/08/202223/04/2023 Jan Reilink 10 Comments

In this post, I’ll show you how to properly install Microsoft OpenSSH client in Windows 11 and Windows 10, and how to configure your YubiKey.

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

14/01/202221/02/2023 Jan Reilink 1 Comment

Find out fast if your IIS webservers have EnableTrailerSupport enabled for https.sys in the registry. Here is a small PowerShell method.

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white and gray metal pipe

What are 4 important security measures for Windows Server & IIS 10?

15/05/201721/02/2023 Jan Reilink

When you have just installed your new Windows Server, with or without IIS as web server, it is important to take a few extra security measurements. Securing your server is important to keep hackers out and your data safe. This article provides 4 key steps in strengthening your Windows Server web (IIS) or file server security.

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Exploit PHP’s mail() to get remote code execution

07/09/201421/02/2023 Jan Reilink 1 Comment

If you are able to control the 5th parameter of the mail() function ($options), you have the opportunity to execute arbitrary commands. Remote Code Execution (RCE) in PHP mail()

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magnifying glass near gray laptop computer

Grep for forensic log parsing and analysis on Windows Server IIS

19/04/201321/02/2023 Jan Reilink 1 Comment

How to use GnuWin32 ported tools like grep.exe and find.exe for forensic log file analysis in Windows Server. In this article I’ll give some real live examples of using these ported GnuWin tools like grep.exe for logfile analysis on Windows servers. The article provides three example, as an alternative to LogParser, because finding spam scripts fast is often very important.

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  • Install Windows Updates using PowerShell
  • Send email with PowerShell
  • Are you in my blocklist?
  • Create an additional SQL Server Login
  • Monitor SQL Server and databases in depth using Zabbix
  • Query all WordPress posts in MySQL not having a Yoast SEO meta description
  • Configure Windows Debugging Symbols in WinDbg
  • Extract files from an MSI package
  • Connect to a KVM host through an ssh tunnel and arbitrary port in Windows 11 and WSL 2
  • Windows 11/10 and WSL 2 DevOps environment

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