312-50V12 · Question #241
312-50V12 Question #241: Real Exam Question with Answer & Explanation
The correct answer is A: Use UDP Traceroute in the Linux operating system by executing the 'traceroute' command with. When ICMP is blocked, an ethical hacker should consider using UDP Traceroute on a Linux system, typically executed with the traceroute command, to ascertain the network path using an alternative protocol.
Question
A Certified Ethical Hacker is attempting to gather information about a target organization's network structure through network footprinting. During the operation, they encounter ICMP blocking by the target system's firewall. The hacker wants to ascertain the path that packets take to the host system from a source, using an alternative protocol. Which of the following actions should the hacker consider next?
Options
- AUse UDP Traceroute in the Linux operating system by executing the 'traceroute' command with
- BUse the ICMP Traceroute on the Windows operating system as it is the default utility.
- CUse the ARIN Whois database search tool to find the network range of the target network.
- DUtilize the Path Analyzer Pro to trace the route from the source to the destination target systems.
Explanation
When ICMP is blocked, an ethical hacker should consider using UDP Traceroute on a Linux system, typically executed with the traceroute command, to ascertain the network path using an alternative protocol.
Common mistakes.
- B. Using ICMP Traceroute would be ineffective because the question explicitly states the target system's firewall is blocking ICMP traffic, preventing this method from succeeding.
- C. The ARIN Whois database provides static registration information about IP address ranges and organizations but does not dynamically trace the live network path taken by packets from a source to a destination.
- D. While Path Analyzer Pro is a legitimate network analysis tool, the question emphasizes the need for an 'alternative protocol' due to ICMP blocking, and a fundamental command-line utility like
traceroutewith UDP is a direct, protocol-specific solution, whereas a generic tool might still default to ICMP or require specific configuration for alternatives.
Concept tested. Network path tracing with alternative protocols (UDP)
Reference. https://www.man7.org/linux/man-pages/man8/traceroute.8.html
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