Service Version Detection

Basic Version Detection (-sV)

Explanation: This performs a version scan on open ports to detect the version of services running.

nmap -sV <target>

Scan All Ports (--allports)

Explanation: This option scans all ports, including port 9100 which is often excluded by default.

nmap -sV --allports <target>

Set Version Scan Intensity (--version-intensity <intensity>)

Explanation: Adjusts the intensity of the version scan, with a higher value using more probes for better accuracy but taking longer.

nmap -sV --version-intensity 9 <target>

Light Version Scan (--version-light)

Explanation: This is a lighter, faster version scan that uses fewer probes, possibly at the cost of accuracy.

nmap -sV --version-light <target>

Scan Using All Probes (--version-all)

Explanation: This attempts every single available probe, offering the highest likelihood of detecting services but taking longer.

nmap -sV --version-all <target>

Trace Version Scan Activity (--version-trace)

Explanation: This option shows detailed debug output of the version scanning process.

nmap -sV --version-trace <target>