Are you ready to learn what is default network in GCP? Our GCP Support team is here to lend a hand with your queries and issues.

What is Default network in GCP?

Default VPC networks can be described as a simple VPC network that is used commonly. It is created when we create a new Google Cloud project.

According to GCP cloud support, every new project starts with a default network if we do not disable it. The default network is a VPC network with IPv4 firewall rules.

Furthermore, the default VPC network consists of one or more subnets, where each subnet remains isolated from other subnets.

The default VPC network consists of two public addresses, namely, a public address and an internet address. While the public internet address enables communication via the internet, the public address for a subnet enables communication with the subnet.

Additionally, a default VPC network may have either one or more networks attached to it. Each network is a collection of subnets in this scenario. In fact, these networks help divide the default VPC network into different parts.

According to our experts, default VPC networks come with specific restrictions. For instance, we cannot create a default VPC network in a region that is not available in our region.

Or, we cannot create a default VPC network with more than 100 virtual machines or 10GB of storage.

In fact. the default network comes with a preconfigured network configuration. It generates insecure firewall rules automatically.

Furthermore, these firewall rules are not audit-logged and we cannot configure them to enable firewall rule logging.

Since the default network is an auto-mode network, its subnets rely on the same predefined IP address range. Hence, we cannot use VPC Network Peering or Cloud VPN with the default network. In this scenario, we must create a new network according to the requirement and then delete the default network.

[Need assistance with a different issue? Our team is available 24/7.]

Conclusion

To conclude, our Support Engineers introduced us to the default network in GCP and some of its characteristics.