Port Scanning

Overview

Learn port discovery across TCP/UDP, how stealth scans operate, and how defenders detect and mitigate scanning activity.

Learning Outcomes

• Execute SYN, connect, and UDP scans responsibly
• Use service/version detection and banner grabbing
• Understand stealth patterns (FIN, Xmas, NULL)
• Interpret results and reduce false positives
• Apply defensive controls and monitoring

Hands-on Labs

Guided tasks using safe targets: run common scans, tune timing, parse results, and validate detections in logs.

Defender’s View

Visibility trade-offs, egress filtering, IDS/IPS signatures, and rate-limiting strategies to curb scanning.