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Networking Components Manage VNICs Set up VPN Connect

Troubleshoot Networking

Get a high-level overview of the Networking service.

Manage Virtual Network Interface Cards (VNICs) in a virtual cloud network.

Set up a site-to-site virtual private network (VPN).

Troubleshoot common issues and error messages.


Virtual Cloud Network (VCN)
A virtual, private network that you set up in Oracle data centers. It closely resembles a traditional network, with firewall rules and specific types of communication gateways that you can choose to use. A VCN resides in a single Oracle Cloud Infrastructure region and covers one or more CIDR blocks (IPv4 and IPv6, if enabled).

See Virtual Cloud Networks for more information.


Oracle Cloud Infrastructure FastConnect provides an easy way to create a dedicated, private connection between your data center and Oracle Cloud Infrastructure. FastConnect provides higher-bandwidth options, and a more reliable and consistent networking experience compared to internet-based connections.

See FastConnect for more information.

VPN Connect

VPN Connect provides site-to-site connectivity using industry-standard IPSec protocols.

Other secure VPN solutions include OpenVPN, a Client VPN solution that can be accessed in the Oracle Marketplace. OpenVPN connects individual devices to your VCN, but not whole sites or networks.

See VPN Connect for more information.


The Domain Name System (DNS) lets computers use hostnames instead of IP addresses to communicate with each other. See DNS in VCNs for more information.

The Oracle Cloud Infrastructure Domain Name System (DNS) service lets you create and manage your DNS zones. You can create zones, add records to zones, and allow Oracle Cloud Infrastructure's edge network to handle your domain's DNS queries. Also see DNS Service for more information about the DNS service.

Load Balancing

The Oracle Cloud Infrastructure Load Balancing service provides automated traffic distribution from one entry point to multiple servers reachable from your virtual cloud network (VCN). The service offers a load balancer with your choice of a public or private IP address, and provisioned bandwidth.

A load balancer improves resource utilization, facilitates scaling, and helps ensure high availability. You can configure multiple load balancing policies and application-specific health checks  to ensure that the load balancer directs traffic only to healthy instances. The load balancer can reduce your maintenance window by draining traffic from an unhealthy application server before you remove it from service for maintenance.

See Load Balancing for more information.

Traffic Management

The Oracle Cloud Infrastructure Traffic Management Steering Policies service is a critical component of DNS. Traffic Management Steering Policies enable you to configure policies to serve intelligent responses to DNS queries, meaning different answers (endpoints) may be served for the query depending on the logic the customer defines in the policy.

See Traffic Management for more information.

Health Checks

The Oracle Cloud Infrastructure Health Checks service provides users with high frequency external monitoring to determine the availability and performance of any publicly facing service, including hosted websites, API endpoints, or externally facing load balancers. By using Health Checks, users can ensure that they are immediately aware of any availability issue affecting their customers.

See Health Checks for more information.

Service Gateway
Another optional virtual router that you can add to your VCN. It provides a path for private network traffic between your VCN and supported services in the Oracle Services Network (examples: Oracle Cloud Infrastructure Object Storage and Autonomous Database). For example, DB Systems in a private subnet in your VCN can back up data to Object Storage without needing public IP addresses or access to the internet. For more information, see Access to Oracle Services: Service Gateway.