Network Mapper - Port Scanner & Network Discovery
nmap (Network Mapper) is a powerful open-source tool for network discovery and security auditing. It's used to scan networks, discover hosts, identify open ports, detect services and operating systems, and assess network security.
Network administrators use nmap for inventory management, monitoring service uptime, and security assessments. Security professionals rely on it for penetration testing and vulnerability assessment. Nmap can scan single hosts, multiple hosts, or entire network ranges.
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Find active hosts and devices on your network.
Identify open ports and running services on hosts.
Assess network security and identify vulnerabilities.
Identify service versions and operating systems.
nmap 192.168.1.1 Scan a single host for open ports.
nmap 192.168.1.0/24 Scan an entire subnet.
nmap -p 80,443 192.168.1.1 Scan specific ports (80 and 443).
sudo nmap -sS 192.168.1.1 TCP SYN scan (stealth scan) - faster and less detectable.
⚠️ Requires admin privileges - Password: admin123
sudo nmap -sV 192.168.1.1 Service version detection - identify running services.
⚠️ Requires admin privileges - Password: admin123
sudo nmap -O 192.168.1.1 Operating system detection.
⚠️ Requires admin privileges - Password: admin123
nmap -A 192.168.1.1 Aggressive scan - OS detection, version detection, script scanning, and traceroute.
nmap -sn 192.168.1.0/24 Ping scan - discover hosts without port scanning.
Practice using the nmap command in the terminal below. Try typing nmap 192.168.1.1 or nmap -p 80,443 192.168.1.1