Certified Ethical Hacker – CEH – 312-50 – Question327

An Intrusion Detection System (IDS) has alerted the network administrator to a possibly malicious sequence of packets sent to a Web server in the network's external DMZ. The packet traffic was captured by the IDS and saved to a PCAP file.
What type of network tool can be used to determine if these packets are genuinely malicious or simply a false positive?


A. Protocol analyzer
B. Intrusion Prevention System (IPS)
C. Network sniffer
D. Vulnerability scanner

Correct Answer: A

Explanation:

A packet analyzer (also known as a network analyzer, protocol analyzer or packet snifferor, for particular types of networks, an Ethernet sniffer or wireless sniffer) is a computer program or piece of computer hardware that can intercept and log traffic that passes over a digital network or part of a network. A packet analyzer can analyze packet traffic saved in a PCAP file.

References: https://en.wikipedia.org/wiki/Packet_analyzer