Category OCI Networking

1. Introduction to OCI Firewall Architecture Oracle Cloud Infrastructure (OCI) provides two software-defined firewall mechanisms to control packet ingress and egress across Virtual Cloud Networks (VCNs): Security Lists and Network Security Groups (NSGs). Both mechanisms enforce virtual firewall filtering directly…

1. Introduction to Edge Connectivity in OCI Public cloud workloads require controlled mechanisms to interact with external networks. In Oracle Cloud Infrastructure (OCI), outbound internet egress and inbound public ingress are managed using two virtual edge gateways: the Internet Gateway…

1. Introduction to Private Oracle Service Egress Modern cloud security frameworks demand that sensitive data inside private database servers, analytics clusters, and application instances never traverse the public internet—even when interacting with platform-as-a-service (PaaS) offerings like Object Storage, Autonomous Databases,…

1. Introduction to Intra-Region VCN Peering As cloud environments grow, organizations separate workloads into multiple Virtual Cloud Networks (VCNs) to enforce administrative segregation, isolated environment lifecycles (Development, Staging, Production), or shared-services models (logging, central DNS, security scanning). In Oracle Cloud…

1. Introduction to OCI DRG v2 As enterprise cloud footprints grow to dozens of Virtual Cloud Networks (VCNs) spanning hybrid on-premises environments, point-to-point peering using Local Peering Gateways (LPGs) becomes unmanageable due to $N(N-1)/2$ mesh connectivity complexity and non-transitive routing…

1. Introduction to Global Cross-Region Connectivity Global enterprise cloud architectures often deploy workloads across multiple Oracle Cloud Infrastructure (OCI) regions—such as us-ashburn-1 (Primary Data Center) and eu-frankfurt-1 (Disaster Recovery site)—to satisfy geographic latency demands, high availability SLAs, and data residency…

1. Introduction to Enterprise Dedicated Connectivity While IPSec Site-to-Site VPN offers encrypted connectivity over the public internet, enterprise workloads requiring guaranteed low-latency, high-bandwidth predictability, and strict SLA commitments demand direct physical connections. In Oracle Cloud Infrastructure (OCI), dedicated private networking…

1. Introduction to OCI Site-to-Site VPN Connecting on-premises enterprise data centers to Oracle Cloud Infrastructure (OCI) requires secure, encrypted network transport across public internet infrastructure. OCI delivers this through Site-to-Site VPN (formerly known as OCI IPSec VPN). OCI Site-to-Site VPN…

1. Introduction to Layer 7 Load Balancing Modern web applications demand intelligent traffic management, high availability across Availability Domains, SSL/TLS security offloading, and dynamic auto-scaling. Oracle Cloud Infrastructure (OCI) delivers Layer 7 application load balancing via the Flexible Load Balancer…