VPN connection between two networks

Similar to the previous recipe, another way to establish a connection between two networks is via a VPN connection. Usually, a VPN connection is used to connect an on-premises network with GCP via an IPSEC tunnel. However, for all learning purposes, connecting two VPCs gives us a good understanding of how to go about a VPN setup.

Getting ready

The following are the initial setup verification steps and network creation to be carried out before the recipe can be executed:

1. Create or select a GCP project.
2. Enable billing and enable the default APIs (some APIs such as BigQuery, storage, monitoring, and a few others are enabled automatically).
3. Similar to the previous recipe, we'll create a VPC network called alpha-nw. The following command assumes that you have set your default project:

gcloud compute networks create alpha-nw --subnet-mode=custom

4. Next, let's create a single subnet called alpha-subnet-1 with an IP range of 192.168.0.0/16:

gcloud compute networks subnets...