Virtual Cloud Network (VCN)

A Virtual Cloud Network (VCN) in Oracle Cloud Infrastructure (OCI) is a customizable private network that provides isolated environments for cloud resources, complete with subnets, gateways, and security controls.

Step-by-Step VCN Creation

1. Access the Networking Console

• Log in to the OCI Console and then navigate to Networking > Virtual Cloud Networks.

• Click Start VCN Wizard and select VCN with Internet Connectivity. Click Start VCN Wizard button on the bottom right.

2. Configure Basic VCN Settings

• Name: Enter a descriptive name (e.g., Sandbox).

• Compartment: Select the target compartment (e.g., Network).

• CIDR Block: Specify the IPv4 range for the VCN (default: 192.0.0.0/16). Example: 192.0.0.0/16.

• Public Subnet CIDR: Define a public subnet range (default: 192.0.0.0/24). Example: 192.0.2.0/24.

• Private Subnet CIDR: Define a private subnet range (default: 192.0.1.0/24). Example: 192.0.1.0/24.

click Next

3. Review and Create

• Validate the configuration details (e.g., gatewsubnets, andnets, route tables).

• Click Create to provision the VCN and associated resources.

4. Click on view VCN

This configuration creates

• A public subnet with a route to the internet gateway.
• A private subnet with routes to the NAT and service gateways.

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Benefits of Using the Wizard

• Simplified Setup: Preconfigured gateways, subnets, and security lists reduce manual work.
• Beginner-Friendly: Guided workflow minimizes configuration errors.
• Time Efficiency: Full network setup completes in minutes.