TryHackMe — Networking Concepts | Cyber Security 101 (THM)TryHackMe — Networking Concepts | Cyber Security 101 (THM)

Introduction

Have you ever wondered why you need an IP address to access the Internet? Is it true that an IP address can uniquely identify a user? Are you curious to learn what the life of a packet looks like? If the answer is yes, let’s dive in!

This post is part of a series introducing vital networking concepts and the most common networking protocols:

1. Networking Concepts (this post)
2. Networking Essentials
3. Networking Core Protocols
4. Networking Secure Protocols

Room Prerequisites

This post assumes you’re familiar with terms like IP address and TCP port number, though we don’t expect you to explain them in technical depth. If these terms are new to you, consider checking out the Pre-Security path for foundational knowledge.

Learning Objectives

By the end of this post, you’ll have learned about:

• The ISO OSI network model
• IP addresses, subnets, and routing
• TCP, UDP, and port numbers