Active Reconnaissance: Port Scanning and Service Detection
Day 4 of 60: Learn active reconnaissance techniques including nmap port scanning, service version detection, banner grabbing, and network sweeping. We cover SYN scans, TCP connect scans, ARP scanning, and how to use NSE scripts for vulnerability detection.
Topics covered:
TCP SYN vs Connect scanning
Service version detection with nmap -sV
Manual banner grabbing with netcat
Network host discovery
Nmap Scripting Engine (NSE)
When to use masscan vs nmap
#pentesting #cybersecurity #nmap #activerecon #ethicalhacking #portscan