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Exam 312-49v10 All Questions

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Exam 312-49v10 topic 1 question 178 discussion

Actual exam question from ECCouncil's 312-49v10
Question #: 178
Topic #: 1
[All 312-49v10 Questions]

After passing her CEH exam, Carol wants to ensure that her network is completely secure. She implements a DMZ, stateful firewall, NAT, IPSEC, and a packet filtering firewall. Since all security measures were taken, none of the hosts on her network can reach the Internet. Why is that?

  • A. Stateful firewalls do not work with packet filtering firewalls
  • B. NAT does not work with stateful firewalls
  • C. IPSEC does not work with packet filtering firewalls
  • D. NAT does not work with IPSEC
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Suggested Answer: D 🗳️
by BarryMacockener at Nov. 10, 2022, 4:17 p.m.

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044f354
1 month, 1 week ago
Selected Answer: D
Answer: D 1. IPSEC uses AH (Authentication Header) and ESP (Encapsulating Security Payload), both of which rely on packet integrity. 2. NAT modifies packet headers, causing integrity checks to fail. [unless NAT-T (NAT Traversal) is implemented, which is not mentioned in this scenario.] (A) ❌ Stateful and packet filtering firewalls can work together. (B) ❌ NAT and stateful firewalls are compatible. (C) ❌ IPSEC can work with packet filtering firewalls if properly configured. (D) ✅ NAT modifies packet headers, breaking IPSEC authentication unless NAT-T is used.
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BarryMacockener
5 months, 1 week ago
For what it's worth, this is a VERY outdated question. D used to be correct, but NAT has been compatible with IPSec for a couple years now.
upvoted 2 times
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