Tuesday, July 31, 2018

An Overview of Azure Firewall

One thing I love about Azure networking is how simple is it to create a Virtual Network and the set of features that allow in configuration. It has almost all. That was very helpful when configuring some SharePoint development environments even back in 2015. Things shall be much better right now. 

With the Azure Firewall you can protect the virtual networks very easily. Azure firewall capabilities are high in availability and easy to scale. Even can be set to scale automatically. Another major advantage is that the firewall capabilities can be configured all from the Azure platform interface. You do not need to be running the scripts for everything. Azure firewall supports setting network level filtering rules at resources located in multiple virtual networks as well as multiple subscriptions. 
How it Works:
Source: Azure Blog

Outbound FQDN filtering allows data relying within the infrastructure as a list of FQDN domains that are allowed can be defined. Therefore not all resources will be accessible via internet to all domains.

Filtering rules can be defined across multiple subscriptions. That makes it easy to manage as well as control.

Outbound SNAT support simplifies the address translation between the Virtual Network and the Public IP address allocated. Policies can be set at this level as well.

All the Firewall incidents are logged on the Azure Monitor. Therefore troubleshooting and finding any issues or the incidents are easy as available in one place. 

Source: Azure Blog

Read full article on Azure Blog here.

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