Book Image

Hands-On Networking with Azure

By : Mohamed Waly
Book Image

Hands-On Networking with Azure

By: Mohamed Waly

Overview of this book

Microsoft Azure networking is one of the most valuable and important offerings in Azure. No matter what solution you are building for the cloud, you'll fi nd a compelling use for it. This book will get you up to speed quickly on Microsoft Azure Networking by teaching you how to use different networking services. By reading this book, you will develop a strong networking foundation for Azure virtual machines and for expanding your on-premise environment to Azure. Hands-On Networking with Azure starts with an introduction to Microsoft Azure networking and creating Azure Virtual Networks with subnets of different types within them. The book helps you understand the architecture of Azure networks. You will then learn the best practices for designing both Windows- and Linux-based Azure VM networks. You will also learn to expand your networks into Azure and how to use Azure DNS. Moreover, you will master best practices for dealing with Azure Load Balancer and the solutions they offer in different scenarios. Finally, we will demonstrate how the Azure Application Gateway works, offering various layer-7 load balancing capabilities for applications. By the end of this book, you will be able to architect your networking solutions for Azure.
Table of Contents (15 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Azure DNS delegation


As mentioned earlier, your records will not be exposed externally by just building them in Azure, because you have to do some configurations from the domain registrar side to delegate Azure DNS. This will happen by changing the name servers used by the domain registrar by the name servers you used by the zone you have created in Azure.

If you have worked with DNS servers before, you should be aware that there are two types of DNS servers:

  • Authoritative: This type can respond to the DNS queries from the records it has. For example, you might want to query mail.yourcompany.com , so you will be able to resolve this name to an IP address as long as it has a record created in your DNS zones.
  • Non-Authoritative (recursive): This type can use other authoritative DNS servers to do the DNS query for it. For example, if you want to open www.packtpub.com, the authoritative DNS server will not help because it knows nothing about other domains. However, the recursive one will call the...