Introduction For most businesses using some kind of firewall in Azure is not optional , these firewalls could be a cloud native offering such as Azure Firewall or a Network Virtual Appliance (NVA) running on IaaS such as Palo Alto, Checkpoint, Fortigate etc etc. A popular and common networking model in Azure that utilises some form of firewall is the hub and spoke network design which uses a centralised firewall or maybe even multiple centralised firewalls behind a load balancer for high availability .

What is Azure Firewall - A fully stateful firewall as a service. Before you can deploy Azure Firewall you need to register the provider in your subscription : https://docs.microsoft.com/en-us/azure/firewall/public-preview Register-AzureRmProviderFeature -FeatureName AllowRegionalGatewayManagerForSecureGateway -ProviderNamespace Microsoft.Network Register-AzureRmProviderFeature -FeatureName AllowAzureFirewall -ProviderNamespace Microsoft.Network It can take up to 30 minutes for the feature registration to complete The easy way to get going and play with Azure Firewall is to use the quickstart template https://github.com/Azure/azure-quickstart-templates/tree/master/101-azurefirewall-sandbox