9B.1 Scan Network Ports with Nmap & Netcat | Network+ Lab | Network+ N10-008

In this hands-on Network+ lab, we explore how to scan network ports using industry-standard tools like Nmap and Netcat, based on Objective 9.2 of the CompTIA Network+ (N10-008) exam.

You’ll learn how to identify open ports, detect services, and assess systems using these tools — with real-time demonstrations on Linux and Windows.

🧠 Topics Covered:

✅ Why Scan Ports?

Discover open ports & running services

Identify security risks and misconfigurations

✅ Common Port Scanning Tools:

Nmap: Advanced network mapping and port scanning

Netcat (nc): Simple TCP/UDP scanner and listener

Bonus: Telnet, TCPDump for testing and verification

✅ Basic Nmap Usage:
nmap -sS 192.168.1.10 # SYN scan (stealth)
nmap -sV 192.168.1.10 # Detect service versions
nmap -p 22,80,443 192.168.1.10 # Scan specific ports
nmap -T4 -A 192.168.1.10 # Aggressive scan with OS detection

✅ Using Netcat (NC):
nc -zv 192.168.1.10 1-1024 # Scan TCP ports
nc -lvp 4444 # Listen for incoming connection

How to Interpret Results:

Open vs closed vs filtered

Identifying common ports (e.g., 21, 22, 80, 443)

✅ Best Practices & Ethical Considerations:

Always scan with permission

Avoid triggering IDS/IPS in production environments

🎥 Includes Live Demo:

Nmap scan on a test server

Netcat listener and connection test

Verifying services on open ports

📥 Download the Port Scanning Lab Worksheet: [Insert link]

💬 Got questions about Nmap flags or scan results? Ask in the comments!

👍 Like, Share & Subscribe for more Network+ practical labs and exam tips.

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Видео 9B.1 Scan Network Ports with Nmap & Netcat | Network+ Lab | Network+ N10-008 канала CyberX Education