Module 1 — Networking Fundamentals
How machines find and talk to each other: IP addressing, subnets/CIDR, the transport layer (TCP/UDP/ports), and ICMP-based troubleshooting. The vocabulary every later module reuses.
Lesson: IP Addresses & How Machines Find Each Other
What you'll learn What an IP address actually is and why machines need one. The difference betwe...
Lesson: Subnetting & CIDR
What you'll learn What a subnet mask is and what the /24 in 10.100.100.0/24 means. How to split ...
Lesson: TCP, UDP & Ports
What you'll learn Why IP addresses alone aren't enough — and what a port adds. The difference be...
Lesson: ICMP & Network Troubleshooting
What you'll learn What ICMP is and why it's separate from TCP/UDP. How ping and traceroute actua...
Assignment 1: Map the lab network
Goal: prove you can read a real machine's network configuration and reason about it — the skills ...
Assignment 2: Diagnose a broken connection
Goal: apply the bottom-up troubleshooting model (Lesson 4) and the TCP/port concepts (Lesson 3) t...