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 conditions: If you are in this particular configuration, it is possible that on your DNS server, you encounter the error 404, 407 …
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 to achieve the same result that we will see in this tutorial. Use sconfig to configure an IP address sconfig for ServerConfig is a command …
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 (Active Directory) zone is not easy, especially with dynamic computer registration. The first step is the activation of automatic cleaning, but it happens that once this is activated, …
Here is how to display the default gateway on Ubuntu from the command line. Ubuntu 20.04 + (without net tools) Ubuntu 18.04 – (with net-tools)
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 is an open source tool that allows you to “secure” or rather add a layer of security to your Linux servers (soon Windows too) by …
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 C:\Windows\System32\drivers\etc. To display the hosts file which has no extension it is necessary to select All files (*. *) 3. Add a record in the form: 4. Save and close the …
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, what a NAT switch is. If you have already used another hypervisor such as vmware or virtualbox for example, this type of switch is available by …
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 possible to perform a throughput test and to diagnose a possible bottleneck on a network between two points. By opening the appropriate ports, it is also …
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, we will see how to change it back to the domain profile. The connection profile on a network adapter is especially useful when different firewall …
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 a virtual switch created on Hyper-V, which allows virtual adapters of virtual machines (but not only) to have access to a network. …