Which of the following banner grabbing tools is Joe most likely to use if he wants to use a stealthy Linux tool that analyzes network traffic and returns information about operating systems?

If Joe wants to use a stealthy Linux tool that analyzes network traffic and returns information about operating systems, the banner grabbing tool he is most likely to use is Pof.

Pof is a passive OS fingerprinting tool that is designed to identify the operating system of a remote host by analyzing its network traffic. Unlike active OS fingerprinting tools, such as Telnet, Pof is designed to operate in a stealthy manner, without sending any packets to the remote host.

Pof works by analyzing the characteristics of the packets being sent by the remote host, such as the TCP/IP stack behavior, the maximum segment size (MSS), and the window size. By comparing these characteristics to a database of known operating system fingerprints, Pof can often identify the operating system of the remote host with a high degree of accuracy.

Overall, Pof is a popular tool for passive OS fingerprinting and is widely used by security professionals and researchers to analyze network traffic and identify potential security threats.