nerdexam
Cisco

210-250 · Question #166

A ping attack that exploits the broadcast IP address in a subnet is referred to as what type of attack?

The correct answer is C. smurf. A smurf attack amplifies ICMP echo requests by sending them to a subnet broadcast address with a spoofed source IP, causing all hosts to reply to the victim.

Threats and Vulnerabilities

Question

A ping attack that exploits the broadcast IP address in a subnet is referred to as what type of attack?

Options

  • Ared rat
  • Bfraggle
  • Csmurf
  • DSYN flood
  • Efirewalk

How the community answered

(52 responses)
  • A
    2% (1)
  • B
    8% (4)
  • C
    87% (45)
  • D
    4% (2)

Why each option

A smurf attack amplifies ICMP echo requests by sending them to a subnet broadcast address with a spoofed source IP, causing all hosts to reply to the victim.

Ared rat

Red rat is not a recognized network attack type related to broadcast ICMP exploitation.

Bfraggle

A fraggle attack is similar but uses UDP echo packets to the broadcast address rather than ICMP, making it a distinct variant.

CsmurfCorrect

The smurf attack exploits the ICMP echo request mechanism by sending packets to the broadcast address of a network with the victim's IP spoofed as the source address. Every reachable host on that subnet replies to the victim simultaneously, creating a massive amplification of traffic. This floods the victim's network connection, resulting in denial of service.

DSYN flood

A SYN flood targets TCP connection state by sending large numbers of SYN packets without completing the handshake, not using broadcast ICMP.

Efirewalk

Firewalk is a reconnaissance technique used to determine firewall ACL rules by manipulating TTL values, unrelated to broadcast ping amplification.

Concept tested: Smurf ICMP broadcast amplification attack

Source: https://www.cisco.com/c/en/us/about/security-center/smurf.html

Topics

#smurf attack#ICMP#broadcast address#DDoS

Community Discussion

No community discussion yet for this question.

Full 210-250 Practice