Which of the following is a packet sniffing tool?

Which of the following is a packet sniffing tool?

• A. Tcpdump
• B. Fiddler
• C. Nping
• D. NetStumbler

Answer: (A)

Packet sniffing involves capturing and analyzing network traffic on an interface to inspect headers and payloads for troubleshooting or security work. Tcpdump is a command-line tool that embodies this capability, capturing traffic on a network interface via libpcap and printing packet headers and payloads for inspection. It also lets you filter traffic with BPF syntax to focus on particular protocols, ports, or addresses, and you can save captures for later analysis. That ability to observe actual packets at the data-link and network layers makes it the best fit. The other tools serve different purposes: Fiddler acts as a web debugging proxy, capturing HTTP(S) traffic between a browser and a server but not providing raw packet captures of all network traffic. Nping is used to generate and analyze network packets to test reachability and performance rather than capturing traffic. NetStumbler focuses on discovering wireless networks and their signal strengths, not on sniffing arbitrary packets on a general network.

Packet sniffing involves capturing and analyzing network traffic on an interface to inspect headers and payloads for troubleshooting or security work. Tcpdump is a command-line tool that embodies this capability, capturing traffic on a network interface via libpcap and printing packet headers and payloads for inspection. It also lets you filter traffic with BPF syntax to focus on particular protocols, ports, or addresses, and you can save captures for later analysis. That ability to observe actual packets at the data-link and network layers makes it the best fit.

The other tools serve different purposes: Fiddler acts as a web debugging proxy, capturing HTTP(S) traffic between a browser and a server but not providing raw packet captures of all network traffic. Nping is used to generate and analyze network packets to test reachability and performance rather than capturing traffic. NetStumbler focuses on discovering wireless networks and their signal strengths, not on sniffing arbitrary packets on a general network.