CheckPoint Exam 156-585 Topic 1 Question 71 Discussion

Actual exam question for CheckPoint's 156-585 exam

Question #: 71
Topic #: 1

Vanessa is reviewing ike.elg file to troubleshoot failed site-to-site VPN connection After sending Mam Mode Packet 5 the response from the peer is PAYLOAD-MALFORMED"

What is the reason for failed VPN connection?

AThe authentication on Phase 1 is causing the problem.
Pre-shared key on local gateway encrypted by the hash algorithm created in Packet 3 and Packet 4 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

BThe authentication on Phase 2 is causing the problem
Pre-shared key on local gateway encrypted by the hash algorithm created in Packets 1 and 2 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

CThe authentication on Quick Mode is causing the problem
Pre-shared key on local gateway encrypted by the hash algorithm created in Packets 3 and 4 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

DThe authentication on Phase 1 is causing the problem
Pre-shared key on local gateway encrypted by the hash algorithm doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key created in Packet 1 and Packet 2

Show Suggested Answer

Suggested Answer: C

by Kris at Sep 15, 2024, 12:49 AM

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Ashlyn

2 months ago

Looks like someone's been playing a little too much 'Guess the VPN Error'. My money's on B - the Phase 2 authentication is the root of the issue.

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Coral

1 months ago

C) The authentication on Quick Mode is causing the problem. Pre-shared key on local gateway encrypted by the hash algorithm created in Packets 3 and 4 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

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Lashaunda

1 months ago

B) The authentication on Phase 2 is causing the problem. Pre-shared key on local gateway encrypted by the hash algorithm created in Packets 1 and 2 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

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Lenna

1 months ago

A) The authentication on Phase 1 is causing the problem. Pre-shared key on local gateway encrypted by the hash algorithm created in Packet 3 and Packet 4 doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key

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France

3 months ago

This is a classic VPN brain-teaser. I'm going to have to go with the classic A - the Phase 1 authentication is the problem here.

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Annita

2 months ago

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Florinda

2 months ago

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Rana

2 months ago

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Nathalie

3 months ago

Ah, the old VPN troubleshooting puzzle. I'm going to have to go with C on this one. The Quick Mode authentication is definitely the culprit.

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Garry

29 days ago

I'm leaning towards Phase 1 authentication not matching the hash on the peer gateway in Packet 1 and Packet 2.

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Hannah

1 months ago

I'm with you on this one, I also think the Quick Mode authentication is causing the problem.

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Staci

1 months ago

I disagree, I believe the problem lies in Phase 2 authentication not matching the hash on the peer gateway.

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Shanda

1 months ago

I think the issue is with Phase 1 authentication not matching the hash on the peer gateway.

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Alonso

3 months ago

The key here is that the pre-shared key on the local gateway doesn't match the hash on the peer gateway. I'd go with D as the correct answer.

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Andra

2 months ago

D) The authentication on Phase 1 is causing the problem. Pre-shared key on local gateway encrypted by the hash algorithm doesn't match with the hash on the peer gateway generated by encrypting its pre-shared key created in Packet 1 and Packet 2

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Madalyn

2 months ago

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Alonzo

3 months ago

Hmm, the PAYLOAD-MALFORMED error message suggests an issue with the VPN packet format. I think the answer might be B - the problem is with the Phase 2 authentication.

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