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

Creating a new deny rule in an NSG

When a new NSG is created, only the default rules are present. The default rules allow all outbound traffic and block all inbound traffic. To change this, additional rules need to be created. Now, we are going to show you how to create a new outbound rule to deny traffic.

Getting ready

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

How to do it...

To create a new NSG deny rule using the Azure portal, we must follow these steps:

  1. In the NSG pane, locate the Outbound security rules option under Settings.
  2. Click on the Add button at the top of the page and wait for the new pane to open:
    Clicking on the Add button to add new outbound security rules

    Figure 3.4: Creating a new NSG deny rule using the Azure portal

  3. In the new pane, we need to provide information for Source (location and port range), Destination (location and port range), Protocol, Action, Priority, Name, and Description. If you want to deny traffic...