Oracle Cloud Infrastructure (OCI) VCNs are private, flexible data centers in the cloud with security policies and built-in administration and troubleshooting.
Use configurable security rules to control packet-level traffic in and out instances. Designate subnets as public or private. Put a VCN in a security zone to enforce best practice policies.
OCI does not charge data transfer fees for intraregion data movement, including between virtual networks or availability domains.
Powerful tools are included to view, diagnose, and inspect your network, including visual network layout, testing connectivity, and packet-level inspection.
A virtual cloud network (VCN) is a virtual, private network that closely resembles a traditional network, with firewall rules and specific types of communication gateways that you can choose. A VCN resides in a single OCI region and covers one or more CIDR blocks (IPv4 and IPv6, if enabled). Each subnet consists of a contiguous range of IP addresses (for IPv4 and IPv6, if enabled) that do not overlap with other subnets in the VCN.
You can designate a subnet to exist either in a single availability domain or across an entire region (regional subnets are recommended). All network interfaces in a given subnet use the same route table, security rules, and DHCP options. Subnets can be either public or private when you create them. Private means the network interfaces in the subnet can't have public IPv4 addresses and internet communication with IPv6 endpoints will be prohibited. Public means the network interfaces in the subnet can have public IPv4 addresses and internet communication is permitted with IPv6 endpoints.
The Network Visualizer provides a diagram of the implemented topology of all VCNs in a selected region and tenancy, including dynamic routing gateways, virtual cloud networks, customer premises equipment.
Analyze traffic flows for insights, events, and security anomalies across all traffic entering and leaving a virtual network. Use OCI Logging Analytics or export the logs in standard JSON for analysis by third-party tools.
Perform an intuitive hop-by-hop analysis of routing and security policies from source to destination to determine connectivity and reachability. Confirm your configuration is correct before onboarding workloads and ensure that forward and return paths are correct.
OCI uses virtual cloud networks and subnets to create different segments of the network and a firewall to handle security controls.
Deploy high performance computing (HPC) resources in a high-bandwidth, low-latency cloud network with performance that rivals that of on-premises HPC networks—but with the cost and operational advantages of cloud computing.
OCI Virtual Test Access Point (VTAP) provides insights into your network traffic, capturing the data required for in-depth network analysis.
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