To perform a version detection scan using Nmap on Kali Linux, follow these steps:

1. Open the terminal: Start by launching a terminal on your Kali Linux system.
2. Run Nmap with version detection: Use the -sV flag to enable version detection. The basic syntax is:

   sudo nmap -sV <target-ip>


   For example, to perform a version detection scan on the IP 192.168.1.10, you would run:

   sudo nmap -sV 192.168.1.10


3. Additional options (optional): You can combine the -sV option with other flags for more detailed results. Some useful combinations are:
   • OS detection: Combine -sV with the -O flag to detect the operating system:

     sudo nmap -sV -O 192.168.1.10


   • Aggressive scan: Use the -A flag for a more aggressive scan that includes version detection, OS detection, script scanning, and traceroute:

     sudo nmap -A 192.168.1.10


   • Specify ports: Use the -p flag to scan specific ports:

     sudo nmap -sV -p 22,80,443 192.168.1.10


   This command will check for versions on ports 22 (SSH), 80 (HTTP), and 443 (HTTPS).

4. Scan entire networks: To perform version detection on an entire network, specify the range of IP addresses or use CIDR notation. For example:

   sudo nmap -sV 192.168.1.0/24


   This will run version detection on all hosts in the 192.168.1.x subnet.

Explanation of -sV:

• The -sV flag enables Nmap to probe open ports and attempt to determine the version of the service running on those ports. This is useful for identifying vulnerabilities or understanding the services on a network.

Make sure you have the necessary permissions to scan the target systems, as unauthorized scanning can be illegal.