Chapter 1, Azure Virtual Network, teaches you about the basics of Azure networking, such as creating Azure VNets, designing address spaces, and subnets. This will lay the foundation for all future recipes in this book.
Chapter 2, Virtual Machine Networking, covers Azure VMs and the network interface that is used as an interconnection between Azure VMs and Azure VNet.
Chapter 3, Network Security Groups, contains sets of rules that allow or deny specific traffic to specific resources or subnets in Azure. An NSG can be associated with either a subnet (applying security rules to all resources associated with the subnet) or a NIC (applying security rules only to the VM associated with the NIC).
Chapter 4, Managing IP Addresses ...