In addition to the PowerShell signing method discussed in my previous post, I’d like to introduce another crucial aspect of PowerShell security: the “Constrained Language Mode”. This mode is a powerful security feature in PowerShell that limits the language elements available to scripts, reducing the surface area for attacks.
Constrained Language Mode restricts PowerShell to a subset of its language features, disabling potentially dangerous operations. This mode is especially useful in environments where security is paramount and the risk of script-based attacks is high.
Read more…In the realm of Windows domain security, ensuring the execution of only signed PowerShell scripts is a crucial aspect of maintaining a robust defense against unauthorized code. With the proliferation of scripts either written in-house or generated by AI tools, it’s increasingly important to have a mechanism that verifies the authenticity and integrity of these scripts. Signing your PowerShell scripts, and configuring a Group Policy to allow only signed scripts to run, plays a vital role in safeguarding your IT environment. In this step-by-step guide, we will walk through the process of creating a suitable certificate, signing a PowerShell script, verifying its signature, and setting up a Group Policy Object (GPO) to enforce the execution of only signed scripts across all clients and servers.
Read more…In the dynamic world of my IT environment, a pivotal change was due. An old domain controller, running on Windows Server 2012, needed to be demoted and removed from the domain. This task required a meticulous approach, beginning with the transfer of FSMO roles to a newer server, followed by the decommissioning of the old one. Here’s a walkthrough of how I tackled this challenge.
Read more…Here is a PowerShell script that can be used to copy the last Active Backup for Business backup from your Synology to an external USB drive:
To save a copy of a send email in a shared mailbox just execute the following two powershell commands.
set-mailbox <mailbox name> -MessageCopyForSentAsEnabled $True set-mailbox <mailbox name> -MessageCopyForSendOnBehalfEnabled $True
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