Configuring and managing firewall rules

In this section, we investigate how to configure and manage firewall rules in a VPC network. Firewall rules are an important element of the VPC network because they implement security in your infrastructure. Let's begin by taking the following steps:

1. First, we create a new mynetwork VPC with the Automatic subnet mode, as shown in the following screenshot:

   Figure 3.48 – Creating a VPC with Automatic subnet mode

2. Then, we create a privatenetwork VPC with the Custom subnet mode, as shown in the following screenshot:

   Figure 3.49 – Creating a VPC with Custom subnet mode

3. Since the subnet mode is Custom, we must create at least a custom subnet in the privatenetwork VPC, selecting the 10.0.0.0/24 IP address range, as can be seen in the following screenshot:

Figure 3.50 – New subnet creation in the VPC network using Cloud Console

By means of the cloud shell, we will create some GCE...