VPC networks
1. VPC networks
A virtual Private Cloud VPC network is a virtual version of a physical network that provides connectivity for your Compute Engine virtual machine VM instances, including Google Kubernetes Engine GKE clusters, App Engine Flexible environment instances, and other Google Cloud products built on Compute Engine VMs. Offers built-in internal pass-through network load balancers and proxy systems for internal application load balancers. A VPC network connects to on-premises networks by using Cloud VPN tunnels and Cloud interconnect attachments. It distributes traffic from Google Cloud external load balancers to back ends. By default, every network has routes that let instances in a network send traffic directly to each other, even across subnets. In addition, every network has a default route that directs packets to destinations that are outside the network. Although these routes cover most of your normal routing needs, you can also create special routes that override these routes. Just creating a route does not ensure that your packets will be received by the specified next hop. Firewall rules must also allow the packet. The default network has preconfigured firewall rules that allow all instances in the network to talk with each other. Manually created networks do not have such rules, so you must create them. Projects can contain multiple VPC networks. Unless you create an organizational policy that prohibits it, new projects start with a default network, and auto mode VPC network that has one subnetwork, subnet in each region. An auto-mode VPC network can be useful when you start learning about Google Cloud. However, it's a best practice to create a custom mode network and include subnetworks only in desired regions.2. Let's practice!
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