GCIA: GIAC Certified Intrusion AnalystDemo

By GIAC · Question Mode

QuestionQ282

Packet Engineering

Victor is a professional Ethical Hacker at SecureEnet Inc. He wants to scan the company’s wireless network. He uses a free, open-source utility for network exploration.

The tool uses raw IP packets to determine the following:

  • Which ports are open on network systems.
  • Which hosts are available on the network.
  • Unauthorized wireless access points.
  • Which services (application name and version) those hosts are offering.
  • Which operating systems (and OS versions) they are running.
  • Which types of packet filters/firewalls are in use.

Which tool is Victor using?

  • A Nessus
  • B Nmap
  • C Sniffer
  • D Kismet
Explanation

Nmap is a free, open-source network discovery and security-auditing utility. It uses raw IP packets to identify reachable hosts, scan open ports, detect services and application versions, perform operating-system fingerprinting, and identify packet-filtering or firewall behavior.

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