Introduction to VCN
A Virtual Cloud Network (VCN) is the fundamental building block for networking in Oracle Cloud Infrastructure (OCI). It can be thought of as a virtual version of a traditional network that you’d operate in your own data center.
The benefits of using a VCN include:
- Isolation– VCNs provide complete isolation from other virtual networks in the cloud. This allows you to have full control over your network environment.
- Security– VCNs give you control over security through security lists and network security groups. You can restrict access within subnets as well as between subnets.
- Customization– VCNs allow you to fully customize the network environment. You can define subnets, route tables, gateways, and other components to meet your specific needs.
The key components that make up a VCN include:
- Subnets– A subnet is a subdivision of a VCN that allows you to group related resources together. Subnets can be either public or private.
- Route tables– Route tables control the flow of traffic out of a subnet. They specify the destinations that traffic can be routed to.
- Security lists– Security lists act as virtual firewalls that control ingress and egress traffic at the subnet level.
