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Azure Firewall Preview

Azure Firewall is a managed, cloud-based network security service that protects your Azure Virtual Network resources. It is a fully stateful firewall as a service with built-in high availability and unrestricted cloud scalability.  Azure Firewall is currently a managed public preview that you need to explicitly enable using the Register-AzureRmProviderFeature PowerShell command.

You can centrally create, enforce, and log application and network connectivity policies across subscriptions and virtual networks. Azure Firewall uses a static public IP address for your virtual network resources allowing outside firewalls to identify traffic originating from your virtual network. The service is fully integrated with Azure Monitor for logging and analytics.

The Azure Firewall public preview offers the following features:

Built-in high availability

High availability is built in, so no additional load balancers are required and there is nothing you need to configure.

Unrestricted cloud scalability

Azure Firewall can scale up as much as you need to accommodate changing network traffic flows, so you don’t need to budget for your peak traffic.

FQDN filtering

You can limit outbound HTTP/S traffic to a specified list of fully qualified domain names (FQDN) including wild cards. This feature does not require SSL termination.

Network traffic filtering rules

You can centrally create allow or deny network filtering rules by source and destination IP address, port, and protocol. Azure Firewall is fully stateful, so it can distinguish legitimate packets for different types of connections. Rules are enforced and logged across multiple subscriptions and virtual networks.

Outbound SNAT support

All outbound virtual network traffic IP addresses are translated to the Azure Firewall public IP (Source Network Address Translation). You can identify and allow traffic originating from your virtual network to remote Internet destinations.

Azure Monitor logging

All events are integrated with Azure Monitor, allowing you to archive logs to a storage account, stream events to your Event Hub, or send them to Log Analytics.

Learn how to deploy Azure Firewall and further information https://docs.microsoft.com/en-us/azure/firewall/

 

Source: Vic Horne@Microsoft

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