Microsoft 365: import pst into Exchange Online
In this tutorial, I will (re)show you how to import PSTs into Exchange Online, which is the messaging service available with Microsoft 365. A few years ago, I already …
Tutorials
All IT tutorials: systems, networking, virtualization, security.
659 articles
DFS: delete a namespace on Windows Server
In this tutorial, I will explain how to delete a DFS namespace on Windows Server. In the vast majority of cases, you won’t normally need this tutorial ;) Although this …
Windows Server: configure an IP address on a network card
In this tutorial, I will explain how to configure an IP address on a network card on a Windows server. This operation is not complicated, but there are several solutions …
Share a folder in PowerShell
Create a share with PowerShell: This tutorial explains how to share a folder in Powershell granting full access to Everyone. The folder to be shared must already exist on …
Ubuntu - Extend LVM partition and disk
In this tutorial, I will explain how to extend a disk’s partition and then the LVM disk. To understand what we are going to do in this tutorial, I have a virtual machine …
Exchange: optimize database space
In this tutorial, I will explain how to optimize the disk space used by the databases (MailboxDatabase) of Exchange. What you need to know is that the size of Exchange …
DNS: delete a record on Windows Server
In this “How To” tutorial, I will explain how to delete a DNS record on Windows Server with the DNS Manager console. Delete a DNS record Open the DNS Manager console On a …
Crowdsec: protecting Windows servers
In a previous tutorial, I explained how toprotect your Linux servers with Crowdsec in order to block “malicious” traffic. For almost 2 months now, the Crowdsec version …
Active Directory: change the KrbTgt account password
In this tutorial, I will explain how to change the password of the KrbTgt account. Before explaining how to change the password of this account, I will give you some …
GPO - Use WMI filters to filter the application of group policies
In this tutorial, I will walk you through how to create and use Group Policy WMI Filters to filter the application of Group Policy. Before starting, the “technical” part …
Disable server manager at logon
If you’re used to connecting to Windows servers, you may have noticed that Server Manager opens every time, although handy, this tends to “slow” the login and is …
Active Directory: Secure Domain Join to Domain Admins
In this tutorial, we will address a security point on an Active Directory environment, which is the domain joining of computers. What you need to know (some …