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EC-Council

312-49V9 · Question #395

John is using Firewalk to test the security of his Cisco PIX firewall. He is also utilizing a sniffer located on a subnet that resides deep inside his network. After analyzing the sniffer log files…

The correct answer is A. Firewalk sets all packets with a TTL of one. See the full explanation below for the reasoning.

Question

John is using Firewalk to test the security of his Cisco PIX firewall. He is also utilizing a sniffer located on a subnet that resides deep inside his network. After analyzing the sniffer log files, he does not see any of the traffic produced by Firewalk. Why is that?

Options

  • AFirewalk sets all packets with a TTL of one
  • BFirewalk sets all packets with a TTL of zero
  • CFirewalk cannot pass through Cisco firewalls
  • DFirewalk cannot be detected by network sniffers

How the community answered

(24 responses)
  • A
    71% (17)
  • B
    17% (4)
  • C
    8% (2)
  • D
    4% (1)

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