KB5005033: Permitir a los no administas instalar controladores de impresión
Para hacer frente a las vulnerabilidades que afectan al spooler de impresión en Windows, la actualización KB5005033 de agosto de 2021 modifica el comportamiento de …
Tutorials
All IT tutorials: systems, networking, virtualization, security.
660 articles
Testing a connection in PowerShell using Test-NetConnection
Test network connectivity with PowerShell using the Test-NetConnection command: check ports, IP addresses and TCP responses with ease.
Ubuntu: installing and configuring a DHCP server with KEA - isc-kea
Introduction In this tutorial, I’m going to explain how to set up a DHCP server on Ubuntu using KEA (isc-kea). isc-dhcp-server has not been maintained since the end of …
PowerShell Logon Script
In this article, I’m going to give you an example of a logon script written in PowerShell. Why write a PowerShell script to log in when VBScript works as shown in the …
Changing the default visibility of calendars in Exchange
The default visibility settings for calendars in Outlook/Exchange do not allow users to view the details (subject, location, description) of an event, unless they have …
Migrating from Keycloak to Authentik Using PowerShell
Easily migrate from Keycloak to Authentik using a PowerShell script. Learn how to export users and groups from a Keycloak realm and automatically import them into …
Exchange: Managing Permissions for Shared Folders Using Security Groups
In this article, I’ll explain how to manage mailbox delegation: Full access using a security group in Exchange. The following applies to both user mailboxes and shared …
Exchange: Managing Calendar Permissions in PowerShell Using the Exchange Management Shell
In this tutorial, I’ll explain how to manage calendar permissions using the Exchange Management Shell (PowerShell). A common request when managing an Exchange environment …
Exchange: Automatically Empty the Deleted Items Folder
In this tutorial, I’ll explain how to automatically empty the Deleted Items folder in Exchange 2016 and Exchange 2019 mailboxes. It’s possible to configure the Outlook …
Generate a PFX certificate from a key and a .crt file
In this tutorial, I’ll explain how to convert a certificate to PFX format from .key and .crt files. To convert a certificate to PFX format, you’ll need OpenSSL. In this …
Activate a Windows Server evaluation version
As you may have noticed, when you buy a server, manufacturers (Dell, HP, etc.) no longer provide OS support (ISO). So if you want to reinstall the server, you’ll need to …
Windows Keeps Restarting in a Loop After Updates—Any Solutions?
In this tutorial, I’ll explain how to try to fix the problem where Windows keeps restarting in a loop after updates. The following is not a universal solution and may not …