Scanning Networks
Understand host and port discovery as a TCP question — practiced only on 127.0.0.1 or a VM you own.
1. Why Scans Happen: Hosts, Ports, Timeouts
A scan is many connect attempts. Timeouts and scope decide whether it is a lab or a crime.
15 min
+40 XP
2. Connect Scans vs Stealth Ideas
What SYN/connect mean at a beginner level — no attack playbook for café Wi-Fi.
15 min
+40 XP
3. Reading Scan Output Without Crossing Scope
Open vs filtered vs closed as facts about YOUR listener, not a hunting license.
15 min
+40 XP
4. Lab — Scan 127.0.0.1 Only
Hardcoded loopback scan of a tiny port list; optional local http.server.
25 min
+40 XP
5. Quiz — Network Scanning
10 APPLY questions on localhost-only scanning ethics and TCP meaning.
10 min
+40 XP