Book 3

IP Addresses & Networking

Public, private, static, LAN — how packets find their way

Free · Digital Textbook

IPv4, CIDR, NAT, static vs DHCP, and designing a small office LAN for Workshop Co.

  • 9 chapters
  • ~4 hours
  • Hands-on exercises in every chapter
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Table of Contents

Chapters

Read in order the first time — later chapters reference the lab company introduced in Chapter 1.

  1. 01 Welcome to Book 3 Networking vocabulary and the Workshop Co. office lab. 8 min
  2. 02 IPv4 & IPv6 Addresses, notation, loopback, and dual-stack. 25 min
  3. 03 Public, Private & NAT RFC1918, why home IPs repeat, port forwarding. 28 min
  4. 04 CIDR & Subnetting /24, /28, usable hosts, planning subnets. 35 min
  5. 05 Static vs DHCP When to fix an IP, reservations, lease time. 22 min
  6. 06 Designing a LAN VLANs intro, gateway, DNS on LAN, Wi‑Fi vs wired. 28 min
  7. 07 Routing Basics Default gateway, traceroute, asymmetric paths. 22 min
  8. 08 Troubleshooting Connectivity ping, mtr, firewall vs routing vs DNS. 25 min
  9. 09 Capstone: Workshop Co. Office LAN Subnet plan for shop, office, cameras, guest Wi‑Fi. 40 min