https://rdr-it.com/en/tag/network/System administration, virtualization, security and tools for IT professionals.en-USMon, 12 Oct 2026 06:14:00 +0000https://rdr-it.com/en/gpo-apply-a-wallpaper/Wed, 22 Apr 2026 04:30:00 +0000https://rdr-it.com/en/gpo-apply-a-wallpaper/In this tutorial, I will explain how to apply a background image, also called a Wallpaper, using a group policy. To achieve this, we will need to implement two group …https://rdr-it.com/en/gpo-automatically-disable-wi-fi-when-ethernet-is-connected/Mon, 26 Jan 2026 06:00:00 +0000https://rdr-it.com/en/gpo-automatically-disable-wi-fi-when-ethernet-is-connected/In this tutorial, we will see how to automatically disable Wi-Fi when the computer is connected to a wired network using a group policy (GPO). Today, more and more …https://rdr-it.com/en/windows-server-2025-installing-hyper-v/Mon, 19 Jan 2026 06:00:00 +0000https://rdr-it.com/en/windows-server-2025-installing-hyper-v/Learn how to install the Hyper-V role on Windows Server 2025 and create a virtual machine with Hyper-V.https://rdr-it.com/en/powershell-resolve-a-dns-name-with-resolve-dnsname/Wed, 07 Jan 2026 05:30:00 +0000https://rdr-it.com/en/powershell-resolve-a-dns-name-with-resolve-dnsname/In this tutorial, I will explain how to use PowerShell to perform DNS name resolution using the Resolve-DnsName command. This built-in Windows tool makes it easy to query …https://rdr-it.com/en/windows-add-a-static-route/Wed, 02 Jul 2025 04:30:00 +0000https://rdr-it.com/en/windows-add-a-static-route/In this tutorial, I will explain how to add a static route on a Windows computer (Servers or Desktop). To illustrate this tutorial, we will use this diagram: Here we have …https://rdr-it.com/en/windows-server-2025-install-and-configure-a-dhcp-server/Wed, 05 Feb 2025 05:30:00 +0000https://rdr-it.com/en/windows-server-2025-install-and-configure-a-dhcp-server/In this tutorial dedicated to Windows Server 2025, I suggest you see or review how to install the DHCP Server role in order to provide automatic IP configuration to the …https://rdr-it.com/en/docker-change-default-ip-address-ranges/Wed, 01 May 2024 04:30:00 +0000https://rdr-it.com/en/docker-change-default-ip-address-ranges/In this tutorial, I will explain how to change Docker’s default address range. By default, Docker uses class “B” private addresses from 172.17 to 172.32. For each “stack” …https://rdr-it.com/en/proxmox-create-a-private-network-with-nat/Tue, 09 Apr 2024 04:30:00 +0000https://rdr-it.com/en/proxmox-create-a-private-network-with-nat/In this tutorial, I will explain to you how to create a private network on Proxmox and configure NAT so that the LXC/CT containers and virtual computers in this network …https://rdr-it.com/en/glpi-10-network-inventory-with-glpi-agent/Wed, 13 Mar 2024 05:30:00 +0000https://rdr-it.com/en/glpi-10-network-inventory-with-glpi-agent/In this tutorial, I will explain to you how to set up network inventory in GLPI 10 with GLPI Agent. This is the functionality equivalent to network discovery and …https://rdr-it.com/en/ufw-delete-a-rule/Wed, 22 Nov 2023 09:15:24 +0000https://rdr-it.com/en/ufw-delete-a-rule/In this tutorial, I will explain how to easily delete a firewall rule managed by UFW. UFW is a command line interface that simplifies the use of iptables rules.https://rdr-it.com/en/windows-dns-server-error-404-407-408-with-virtual-machine-on-hyper-v/Wed, 23 Nov 2022 05:30:00 +0000https://rdr-it.com/en/windows-dns-server-error-404-407-408-with-virtual-machine-on-hyper-v/In this tutorial, which is a special case, I will explain how to solve the 404, 407 and 408 error that can occur on a DNS server with Windows Server under the following …https://rdr-it.com/en/windows-server-configure-an-ip-address-on-a-network-card/Wed, 03 Aug 2022 04:30:00 +0000https://rdr-it.com/en/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 …https://rdr-it.com/en/gpo-force-dns-computer-registration/Wed, 25 May 2022 04:30:00 +0000https://rdr-it.com/en/gpo-force-dns-computer-registration/In this tutorial, I will explain how to force DNS registration of computers by Group Policy (GPO) in an Active Directory environment. Maintaining a clean, up-to-date DNS …https://rdr-it.com/en/ubuntu-show-default-gateway/Wed, 16 Mar 2022 05:30:00 +0000https://rdr-it.com/en/ubuntu-show-default-gateway/Here is how to display the default gateway on Ubuntu from the command line. Ubuntu 20.04 + (without net tools) ip route show Ubuntu 18.04 - (with net-tools) routehttps://rdr-it.com/en/crowdsec-secure-your-web-server-network-installation-and-configuration/Wed, 22 Dec 2021 05:30:00 +0000https://rdr-it.com/en/crowdsec-secure-your-web-server-network-installation-and-configuration/In this tutorial, I will explain to you how to secure the network part of your web servers with Crowdsec. The tutorial is made on Ubuntu 20.04 Crowdsec overview Crowdsec …https://rdr-it.com/en/use-the-hosts-file-to-simulate-a-dns-record-on-windows/Wed, 18 Aug 2021 04:30:00 +0000https://rdr-it.com/en/use-the-hosts-file-to-simulate-a-dns-record-on-windows/Location of the hosts file : C:\Windows\System32\drivers\etc. Pour ajouter un enregistrement : 1. Start notepad as administrator. 2. Open the hosts file located in …https://rdr-it.com/en/hyper-v-create-a-nat-switch/Tue, 23 Mar 2021 05:30:00 +0000https://rdr-it.com/en/hyper-v-create-a-nat-switch/In this tutorial, I will explain how to create a NAT switch (virtual switch) on Hyper-V. Before getting into the technical explanations, I will explain in a few words, …https://rdr-it.com/en/testing-the-bandwidth-on-a-local-network-with-iperf/Mon, 15 Mar 2021 05:30:00 +0000https://rdr-it.com/en/testing-the-bandwidth-on-a-local-network-with-iperf/IPerf overview iPerf is a client / server command line utility that allows you to perform bandwidth testing on a local network between two machines. iPerf will make it …https://rdr-it.com/en/windows-firewall-force-domain-profile/Fri, 05 Mar 2021 05:30:00 +0000https://rdr-it.com/en/windows-firewall-force-domain-profile/In this tutorial, I will explain how to change the network profile of the firewall on Windows. It happens that after a restart, the profile of the firewall goes private, …https://rdr-it.com/en/hyper-v-the-different-virtual-switches/Tue, 12 Jan 2021 05:30:00 +0000https://rdr-it.com/en/hyper-v-the-different-virtual-switches/In this tutorial, I will tell you how to create a virtual switch on Hyper-V and tell you the difference between the 3 types. What is a virtual switch A virtual switch is …