OSI Model Layer 3: The Network Layer (IP Addressing & Routing)

A diagram of the OSI Network Layer showing a router connecting various global networks and directing data packets with IP addresses across a world map background.

In our last post, we saw how the Transport Layer (Layer 4) prepares our data for its end-to-end journey. But how does that data find its way through the vast, interconnected maze of networks that make up the internet? That’s the mission of Layer 3: The Network Layer. Think of this layer as the global […]

Networking Basics for Beginners: A Simple Guide to IP Addresses & Ports

An infographic for a guide on computer networking basics for beginners, showing how a device uses an IP address, ports, and protocols to communicate on the internet.

Before you can understand how a cyberattack works, you first need to understand the roads it travels on. Every action online, from sending an email to visiting a website, happens over a computer network. Think of it as the invisible nervous system of the digital world. This guide won’t be a complex technical manual. Instead, […]

What is a VPN and Why Do You Need One?

An infographic for a guide on what is a VPN, showing a laptop creating a secure, glowing tunnel through the public internet to protect its data.

Have you ever connected to the free Wi-Fi at a coffee shop, airport, or hotel? It’s convenient, but it can also be incredibly risky. On a public network, your online activity can be easily monitored by hackers looking to steal your passwords and personal information. This is where a VPN comes in. It’s one of […]