Networking 101

Understand how computers communicate. Learn IP addresses, ports, protocols, and how data travels across the internet.

Overview

Every hack begins with a network connection. This course breaks down TCP/IP, DNS, HTTP, and how packets flow. No networking background required, we start from the absolute basics.

What you will learn

  • Explain how data is broken into packets and routed across networks
  • Understand IP addresses, subnets, ports, and the OSI model
  • Describe how DNS resolves domain names to IP addresses
  • Use tools like ping, traceroute, and nslookup to inspect network paths

Syllabus

A structured path through every lesson: What is a Network?, The OSI Model, TCP/IP & UDP, DNS Explained, HTTP & HTTPS, Troubleshooting Tools, Subnetting & CIDR, DHCP & NAT, Network Security Basics.