A penetration tester attempted a DNS poisoning attack. After the attempt, no traffic was seen from the target machine. Which of the following MOST likely caused the attack to fail?

The correct answer is D. The client did not receive a trusted response. If the DNS cache already contained a valid entry for the requested domain, the target machine would not send out a new DNS request until that cache entry expired.

Attacks and Exploits

Question

Options

AThe injection was too slow.
BThe DNS information was incorrect.
CThe DNS cache was not refreshed.
DThe client did not receive a trusted response.

How the community answered

(52 responses)

A
4% (2)
B
13% (7)
C
8% (4)
D
75% (39)

Explanation

If the DNS cache already contained a valid entry for the requested domain, the target machine would not send out a new DNS request until that cache entry expired.

Topics

#DNS poisoning#DNS security#Attack failure analysis#Network attacks

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