Blog - Networking

iproute2 vs rtnetlink: A Linux Networking Checklist for Monitoring Agents

Most Linux teams should use iproute2 for one-off checks and human operations, then reach for rtnetlink when they need event-driven network state, safer automation, or custom agents. This checklist explains the practical difference between the ip command and the kernel's route netlink API for developers and small business infrastructure teams. It also shows where linux server monitoring can stay simple with weekly health reports instead of another noisy dashboard.

Primary DNS Migration Checklist for CentOS 7 to Oracle Linux 9

A primary DNS migration from CentOS 7 to Oracle Linux 9 needs more than copying named.conf and zone files. This checklist explains how to validate zones, troubleshoot DNSSEC DS signature errors, plan the shared-IP cutover, and monitor service health after the move. It gives developers and small business owners a practical path for safer DNS changes without another dashboard to watch.

tcp_mtu_probing Checklist: When to Leave It Alone, Monitor, or Change It

Linux tcp_mtu_probing can help TCP recover when Path MTU Discovery is broken, but it is not a universal throughput tuning switch. For internet-facing file storage servers, the safer default is to leave it alone until linux server monitoring shows retransmits, black-holed ICMP, or path-specific stalls. This checklist explains what to verify before changing the sysctl and how to monitor the change if you decide it is justified.

Oracle Cloud Block Volume Backup: Setup and Best Practices

Oracle Cloud block volume backup is essential for protecting your data and ensuring recoverability in OCI environments. This guide explains how backups work, how to automate them using policies, and how to restore volumes when needed. You’ll also learn practical best practices and common mistakes to avoid. Build a reliable backup strategy from the start instead of reacting after data loss.

OCI VCN Architecture for Beginners: Public and Private Subnets Explained

Learn the difference between public and private subnets in OCI VCN and the recommended architecture for small teams.

Designing a Multi-Tier Network in OCI: Best Practices and Implementation

In this guide, we'll design and build a classic three-tier architecture in OCI—web, application, and database layers. This is the setup used by nearly every enterprise workload because it provides scalability, separation of concerns, and strong security boundaries.

Securing Your OCI Network: Practical Best Practices for Every Deployment

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.

Securing Your Cloud: OCI Identity and Access Management (IAM) Deep Dive

Building Your Network in Oracle Cloud Infrastructure (OCI): A Step-by-Step Guide

Every reliable cloud deployment starts with a solid network foundation. In OCI, that foundation is the Virtual Cloud Network (VCN)—a private, software-defined network for your compute, databases, and services. This guide explains compartments, public vs private subnets, and a practical setup flow.