Cyber Security Complete Course 2026 | From Zero to Job Ready Ethical Hacker + Blue Team Expert | The Techzeen - Cyber Security Tutorial #17: Nmap Core Concepts Explained | Scans, Ports, NSE & Output (2025)

In Cyber Security Tutorial, we dive into Nmap 🚀. The essential network mapper used by security pros and sysadmins. This video explains Nmap concepts in a simple, beginner-friendly way with real examples and command demos. You’ll learn: ✅ What is Nmap and why it’s used ✅ Host discovery (ICMP / -Pn) — how to know if a host is up ✅ Ports explained (0–65535) — Open / Closed / Filtered with real analogies ✅ TCP vs UDP — when attackers target each protocol ✅ Key scan types: -sT (Connect), -sS (SYN/half-open), -sU (UDP), -sA (ACK) ✅ Service & OS detection: -sV, -O — how to fingerprint versions/OS ✅ Timing templates: -T0 → -T5 and when to use them ✅ Output & reporting: -oN, -oX, -oG, -oA for saving results ⭐ If this helped you — Subscribe to The Techzeen to Become a Cyber Security Expertin 2025 🔔 Cyber Security Concepts: https://github.com/farzeen-ali/Cyber-Security-Concepts Cyber Security Full Course 2025: https://www.youtube.com/playlist?list=PL5OhSdfH4uDuCcQ-NZ4lYa3S07FQTFtrY DevOps Tutorial 2025: https://www.youtube.com/playlist?list=PL5OhSdfH4uDsyUM02ZHl2mOYBpihCYsml React Native Full Course 2024 : https://www.youtube.com/playlist?list=PL5OhSdfH4uDuUpj3fwknoUVBkT2oMXyOl Cyber Security Full Course 2025 Ethical Hacking Full Course 2025 The Techzeen Nmap Tutorial for Beginners #CyberSecurityTutorial #Nmap #NetworkMapper #NmapTutorial #PortScanning #NmapNSE #NetworkSecurity #EthicalHacking #CyberSecurityForBeginners #NmapCommands #InformationSecurity #TheTechzeen #CyberSecurity2025 #TCPvsUDP #PenetrationTesting