Find the open door before a thief does — and close it.

This is your first hands-on, active step as a guardian: scanning. With Nmap, the world's most trusted free tool, you will learn to gently check your own machine for open doors, see who stands behind each one and how old its lock is, and then quietly close the gaps you do not need. A complete Quick-Start builds you a safe lab with a practice target, so you can do every scan yourself — even if this is your very first book.

WHAT YOU'LL LEARN:
• Build a safe lab with a practice target, from scratch (Quick-Start included)
• The full Nmap workflow: host discovery, port scan, service & version, OS detection
• How to read results like a guardian: open, closed and filtered doors
• How to find your weak spots and harden them — the whole point of scanning

Part of the Ethical Hacking & Cyber Security Series by Jacob Francis ('Joshi ji') — the companion to the free aiGodess Cyber Academy video course.