Nmap can be used for banner grabbing. Which of the following is the proper nmap command?

Nmap can be used for banner grabbing. Which of the following is the proper nmap command?

• A. nmap -sV --script=banner ip_address
• B. nmap -sV ip_address
• C. nmap --script=banner -sV ip_address
• D. nmap -sC -sV ip_address

Answer: (A)

To grab banners with Nmap, you need to both detect what services are running and explicitly run the banner retrieval script. The command shown does exactly that: it enables service/version detection with -sV and runs the banner NSE script with --script=banner, targeting the specified IP. This combination ensures you actually fetch the banner text from services rather than just getting version info or relying on a broader or non-specific set of scripts. Without the banner script, banners may not be retrieved; using a default script set without specifically calling the banner script may also miss banners. The explicit pairing of -sV with --script=banner provides a clear, reliable way to obtain banners.

To grab banners with Nmap, you need to both detect what services are running and explicitly run the banner retrieval script. The command shown does exactly that: it enables service/version detection with -sV and runs the banner NSE script with --script=banner, targeting the specified IP. This combination ensures you actually fetch the banner text from services rather than just getting version info or relying on a broader or non-specific set of scripts. Without the banner script, banners may not be retrieved; using a default script set without specifically calling the banner script may also miss banners. The explicit pairing of -sV with --script=banner provides a clear, reliable way to obtain banners.