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210-250 · Question #158

What is an example of a reconnaissance attack tool that will cycle through all well-known ports to provide a complete list of all services that are running on the hosts?

The correct answer is C. NMAP. NMAP (Network Mapper) is the standard open-source reconnaissance tool used to scan ports and enumerate running services on remote hosts.

Threats and Vulnerabilities

Question

What is an example of a reconnaissance attack tool that will cycle through all well-known ports to provide a complete list of all services that are running on the hosts?

Options

  • ANetuse
  • Bipconfig
  • CNMAP
  • Dshow run

How the community answered

(23 responses)
  • A
    4% (1)
  • C
    91% (21)
  • D
    4% (1)

Why each option

NMAP (Network Mapper) is the standard open-source reconnaissance tool used to scan ports and enumerate running services on remote hosts.

ANetuse

Netuse is not a recognized network reconnaissance or port scanning tool and provides no port enumeration capability.

Bipconfig

ipconfig (or ifconfig on Linux/macOS) is a local network configuration utility that displays the host's own IP address and adapter settings and cannot scan remote hosts.

CNMAPCorrect

NMAP is a widely used network scanning tool that can sweep all 1,024 well-known ports - or all 65,535 ports - using TCP, UDP, and other probe techniques to identify open ports and the services listening on them. Its service version detection flag (-sV) maps port numbers to service names, making it the definitive tool for host enumeration and reconnaissance in both authorized penetration testing and adversarial contexts.

Dshow run

'show run' is a Cisco IOS privileged EXEC command that displays the running configuration of a router or switch and has no port scanning or service enumeration capability.

Concept tested: NMAP port scanning for network reconnaissance

Source: https://nmap.org/book/man.html

Topics

#NMAP#port scanning#reconnaissance#network enumeration

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