Ubuntu 24.04: Installing Docker and Docker compose
In this tutorial, I will explain how to install Docker and Docker Compose from the official Docker sources. Au moment de la rédaction de ce tutoriel, Ubuntu 24.04 vient …
Tutorials
All IT tutorials: systems, networking, virtualization, security.
659 articles
Deploy Guacamole in a container with Docker and docker-compose
In this tutorial, I will explain how to deploy Guacamole in a container using Docker and docker-compose. In my first Guacamole tutorial available here , I explained how …
Exchange: convert a shared mailbox into a user mailbox
In this tutorial, I will show you how to convert a shared mailbox to a user mailbox on Exchange using PowerShell. It happens that for the needs of consulting a shared …
GLPI 10: link with an Active Directory
Presentation In this tutorial, I will explain how to link GLPI 10 with an Active Directory to allow users to log in with their domain account. This link will allow you to …
Nginx: resolve error: could not build optimal proxy_headers_hash
In this article, I will explain how to fix the could not build optimal proxy_headers_hash error on Nginx when doing a configuration test with nginx -t. This warning is …
Create a sub-certificate authority with AD CS
In this tutorial, I will explain how to create a sub CA with Windows AD CS. Sub-CAs are underused on firewalls when SSL decryption is implemented, generating a sub-CA …
Windows 11 24H2: GPO application problem - gpupdate
With the deployment of Windows 11 24H2, you may have group policy application issues, which is visible by running the gpupdate command. Error message: Computer policy …
Active Directory: Change Object Owner in Bulk
Below you will find scripts that will allow you to mass change the owner of different Active Directory objects such as: Users Groups Organizational Unit Computers In a …
Configure a reverse proxy with Apache on Ubuntu
Introducing the Reverse Proxy In this tutorial, I will explain how to configure a reverse proxy with Apache on Ubuntu (By adapting the Apache installation commands, this …
Install WSUS role on Windows Server 2025
In this tutorial, we will see how to install the WSUS (Windows Server Update Services) role on Windows Server 2025, which will allow you to have a server in your …
Windows Server 2025: Enable SSH Server for Remote Access
In this tutorial, I will explain how to SSH server on Windows Server 2025 to administer it remotely. If you have been following me for several years, this is not the …
Windows Server 2025: Joining the Computer's Active Directory Domain
In this tutorial, we will see how to join a computer running Windows Server 2025 to an Active Directory domain. Before joining the Active Directory domain, you must have …