What is a virtual network?

A virtual network (VNet) is a network that exists purely in software, allowing for the establishment of isolated, secure, and adaptable networking environments within a data center or cloud architecture. It enables devices, services, or systems to interact as if they were linked over a physical network, even if they are geographically separated or housed in virtual environments.

Tasks

• Create and Configure Virtual Network in Azure.

• Create hub and spoke virtual networks and subnets.

• Create the Hub-vnet virtual network configuration.

1. Create hub and spoke virtual networks and subnets

• Sign in to the Azure portal.

• Search for and select Virtual Networks.

• Select + Create.

• Assign to a Resource group RG11.

• Set the name as app-vnet.

• Region to East US.

• The IPv4 address space is 10.1.0.0/16.

• This virtual network requires two subnets, frontend and backend.

• Set the Subnet address range of the frontend subnet to 10.1.0.0/24.

• Click Add to save.

• Select Add a subnet for the backend subnet.

• Set the Subnet address range to 10.1.1.0/24.

• Click Add to save.

Note:Leave all other settings as their defaults. When finished, select Review + create and then Create.
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2. Create the Hub-vnet virtual network configuration. This virtual network has the firewall subnet.

• Search for and select Virtual Networks again.

• Select + Create.

• Assign to the same Resource group as app-vnet RG11.

• Set the Name as hub-vnet.

• Region to East US as well.

• Click Next to the IP addresses section.

• The IPv4 address space is 10.0.0.0/16.

• Select Add a subnet.

• Name the subnet AzureFirewallSubnet.
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• Set the Subnet address range to 10.0.0.0/26.

• Click Add to save.

• Select Review + create and then Create.

3. Configure a peer relationship between the virtual networks

• Search for and select the app-vnet virtual network.

• In the Settings blade, select Peerings.

• + Add **a peering between the two **virtual networks.

• Set the Remote peering link name to app-vnet-to-hub.

• The Virtual network peered to hub-vnet.

• Set the local virtual network peering link name to hub-to-app-vnet.
  

• Leave all other settings as their defaults.

• Select Add to create the virtual network peering.

Once the deployment completes, verify the Peering status is Connected.

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