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nmap_explorer

Learn port scanning fundamentals without touching a terminal. Understand SYN scans, service detection, OS fingerprinting, and what happens at the packet level.

Includes an interactive command builder that explains every flag, a common ports reference (1–1024), TCP vs UDP comparison, and live scan result walkthroughs.

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Sample scan output
nmap -sV -p 1-1024 192.168.1.1
$ nmap -sV --open -p 22,80,443,3306,5432,6379,8080 192.168.1.1
22/tcp open ssh OpenSSH 8.9p1
80/tcp open http nginx 1.24.0
443/tcp open https nginx 1.24.0
3306/tcp closed mysql —
5432/tcp filtered postgresql —
6379/tcp closed redis —
8080/tcp open http-proxy —
3 open · 2 closed · 1 filtered  ·  scan done in 2.43s