Month 3 Labs

Four labs, done in order. Each has its own directory with a full spec. The lab attempt floor and the no-AI rule apply to every one. This is an AI-free zone month.

Lab	Directory	Time budget	Floor	What you build
3.1 Subnetting Drills	lab-01-subnetting-drills/	10 to 12 h	90 min per drill set	Hand-solved subnetting to muscle memory; calculators refused
3.2 Virtual Network Build	lab-02-virtual-network-build/	14 to 16 h	90 min	A two-subnet routed network and a documented routing table
3.3 Protocol Captures	lab-03-protocol-captures/	10 to 12 h	90 min	Annotated DHCP, DNS, and TCP-handshake captures of your own traffic
3.4 TryHackMe Networking	lab-04-tryhackme-networking/	10 to 12 h	45 min per stuck task	A consolidated network model and the no-flag habit

Two labs carry scope rules you must honor exactly. Lab 3.2 and Lab 3.3 touch live network configuration and live traffic. You build and capture only on your own machines and your own lab network. Re-read each lab’s scope section before you run anything.

Complete all four, commit a notebook entry for each, write the subnetting method sheet, and produce the end-of-month annotated network diagram (see ../deliverable.md) before advancing to Month 4.