How to Build a Custom Certificate Authority & Configure HTTPS on Apache

Introduction: Are you tired of seeing the "Your connection is not private" warning? Or perhaps you are looking to have full control over your internal digital certificates? If so, then this guide is for you. Public Key Infrastructure (PKI) is the backbone of secure communication over the internet, which ensures that the…

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CIDR Made Simple: Why Classless Addressing Is Smarter (with Real Examples)

Why CIDR Still Matters Today? The internet depends on IP addresses, and CIDR (Classless Inter-Domain Routing) has revolutionized it, how to allocate and then route these addresses. In the past, the classful addressing system was rigid and also wasting the IP addresses, thus, it was limiting the flexibility of the network. CIDR…

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Understanding Subnetting in Networking: A Simple Guide

What is Subnetting and Why is It Important? Imagine you’re managing a network where thousands of devices are communicating. Subnetting is like dividing the network into smaller sections, or subnets, so that everything can be efficiently managed. Just as cities are divided into their regions and further into neighborhoods to make services…

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Subnetting & CIDR Explained: Unlocking Modern IP Addressing with Cisco Packet Tracer

Why CIDR Still Matters Today? The internet depends on IP addresses, and CIDR (Classless Inter-Domain Routing) has revolutionized it, how to allocate and then route these addresses. In the past, the classful addressing system was rigid and also wasting the IP addresses, thus, it was limiting the flexibility of the network. CIDR…

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Class A to E: A Beginner-to-Expert Guide to Master IPv4 Address Classes

Introduction: Where Addresses Begin IPv4 address classes are where all digital addresses begin. Think of the internet like a big city full of buildings and homes—every device needs an address to communicate. That’s where IP addresses, especially IPv4, come in. Among them, IPv4 address classes help define how networks are structured and…

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True Stories of Emergency Medical Evacuations

Becky Hart Feb 10, 2023 You fall during a tour in China and break your leg. You get malaria while volunteering in Africa. You have bad luck and get kidney stones on your honeymoon in Southeast Asia. It’s not fun to think about medical emergencies while traveling, and unfortunately, each of the scenarios…

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Experience the 7 Wonders of the World for Yourself

Becky Hart Aug 16, 2024 Even the Ancient Greeks had travel bucket lists. Centuries ago, historians compiled what we now know as the Seven Wonders of the Ancient World. More recently, we have the New Seven Wonders of the World and the Seven Natural Wonders of the World. So what are these incredible…

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