Book Image

Azure Networking Cookbook, Second Edition - Second Edition

By : Mustafa Toroman
Book Image

Azure Networking Cookbook, Second Edition - Second Edition

By: Mustafa Toroman

Overview of this book

Azure's networking services enable organizations to manage their networks effectively. With the Azure Networking Cookbook, you’ll see how Azure paves the way for an enterprise to achieve reliable performance and secure connectivity. This updated second edition will take you through the latest networking features in Azure. The book starts with an introduction to Azure networking, covering basics such as creating Azure virtual networks, designing address spaces, and creating subnets. You’ll create and manage network security groups, application security groups, and IP addresses in Azure using easy-to-follow recipes. As you progress through the book, you’ll explore various aspects such as DNS and routing, load balancers, Traffic Manager, and site-to-site, point-to-site, and VNet-to-VNet connections. This cookbook covers all the functions crucial to understanding cloud networking practices and being able to plan, implement, and secure your network infrastructure with Azure. You’ll not only upscale your current environment but also get well-versed with monitoring, diagnosing, and ensuring secure connectivity. The book will help you grasp best practices as you learn how to create a robust environment. By the end of this Azure cookbook, you’ll have gained hands-on experience developing cost-effective solutions that can facilitate efficient connectivity in your organization.
Table of Contents (15 chapters)
14
Index

Configuring Azure Firewall DNS settings

We can use a custom DNS server with our Azure Firewall instance. This allows us to resolve custom names and apply filtering based on Fully Qualified Domain Name (FQDN).

Getting ready

Before you start, open your browser and go to the Azure portal at https://portal.azure.com.

How to do it...

In order to configure custom DNS settings in Azure Firewall, we need to do the following:

  1. In the Azure Firewall pane, locate DNS under Settings. We need to set it to Enabled. Select the type of DNS (default or custom) and whether we want to use a DNS proxy:
    Configuring the settings necessary to enable DNS for the Azure firewall

    Figure 7.13: Configuring Azure Firewall DNS settings using the Azure portal

  2. Once all the necessary settings are provided, select Save to apply them. It takes up to 30 minutes to correctly propagate routes and for them to take full effect.

How it works...

In order to use FQDN filtering, Azure Firewall needs to be able to resolve the FQDN in question. This can be achieved...