Subnet Association with Network Security Groups

Overview

In this lab, we'll build out a Virtual Network and divide a 10.0.0.0/24 subnet into two subnets of 10.0.0.0/25 and a 10.0.0.128/25. We'll then apply subnet association utilizing a Network Security Group.

Process

We'll start by creating our initial virtual network.

Now we’ll create our address space of 10.0.0.0/24 with 256 addresses, and create a subnet of 10.0.0.0/25 with 128 addresses.

After our subnet gets created we can see it on our overview of VNets. If we click on "subnet" on the left toolbar, we can now build out our second subnet of 10.0.0.128/25. Now that we have both subnets created, we will create a Network Security Group. At this point we’ll associate our two subnets. If we look at our Virtual Network, we can see both of our subnets are associated with our Network Security Group.