The Transport Layer Explained: How Data Moves Reliably Online

A diagram of the OSI Transport Layer showing data segments splitting into two paths: the reliable TCP path symbolized by a shield, and the fast UDP path symbolized by a lightning bolt.

In our last post, we saw how the Session Layer (Layer 5) establishes and manages the conversation between two applications. But once that conversation is open, how do we actually send the data back and forth reliably? That’s the crucial job of Layer 4: The Transport Layer. Think of the Transport Layer as the network’s […]

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, […]