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 (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, …

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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 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 …

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Hyper-V : create a NAT switch

Microsoft Hyper-v

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 …

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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 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 …

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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, 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 …

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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 a virtual switch created on Hyper-V, which allows virtual adapters of virtual machines (but not only) to have access to a network. …

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