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Securing Your OCI Network: Practical Best Practices for Every Deployment

Securing Your OCI Network: Practical Best Practices for Every Deployment

Dec 09, 2025    Mariusz Antonik    Networking    3 min read

In this guide, I’ll show you how to secure your Oracle Cloud network with the same approach I use in production customer environments. OCI offers enterprise-grade networking features—if configured properly. Security starts with the network. And in OCI, that means controlling access with VCNs, subnets, security lists, NSGs, IAM, gateways, and monitoring.

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How to Deploy Compute Servers in OCI: A Practical Deep-Dive Guide

How to Deploy Compute Servers in OCI: A Practical Deep-Dive Guide

Dec 09, 2025    Mariusz Antonik    Oracle Cloud (OCI)    3 min read

In this tutorial, I’ll walk you through the correct, repeatable, and secure way to deploy compute instances in Oracle Cloud Infrastructure. Whether you're building your first Always Free VM or deploying production Linux servers, getting the fundamentals right saves you hours of troubleshooting later. Compute instances are the backbone of your workloads—web servers, application services, database clients, automation nodes, and more. A wrong setup creates security gaps, performance issues, or unnecessary exposure to the public internet.

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Building a Secure VCN in OCI: A Complete Guide for Small Businesses

Building a Secure VCN in OCI: A Complete Guide for Small Businesses

Dec 09, 2025    Mariusz Antonik    Oracle Cloud (OCI)    3 min read

In this guide, I’ll take you through a deep technical walkthrough of building a Virtual Cloud Network (VCN) in Oracle Cloud Infrastructure. If you’re a small business owner, developer, or network engineer, this is the foundation of everything you will ever deploy in OCI. A poorly designed VCN creates ongoing problems—slow services, blocked traffic, security exposures, and troubleshooting nightmares. A well-designed VCN gives you speed, visibility, and a rock-solid security posture.

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OCI Dynamic Routing Gateway Setup Step-by-Step for Hybrid Networking

OCI Dynamic Routing Gateway Setup Step-by-Step for Hybrid Networking

Nov 27, 2025    Mariusz Antonik    Oracle Cloud (OCI)    3 min read

The Dynamic Routing Gateway (DRG) is the heart of hybrid networking in OCI. If you're connecting an on-prem network, another cloud provider, or multiple VCNs — the DRG is the router that ties it all together. In this guide, I’ll show you exactly how to set it up, test it, and validate routing end-to-end.

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