Fortinet Exam NSE8_812 Topic 1 Question 27 Discussion

Actual exam question for Fortinet's NSE8_812 exam

Question #: 27
Topic #: 1

An administrator has configured a FortiGate device to authenticate SSL VPN users using digital certificates. A FortiAuthenticator is the certificate authority (CA) and the Online Certificate Status Protocol (OCSP) server.

Part of the FortiGate configuration is shown below:

Based on this configuration, which two statements are true? (Choose two.)

AOCSP checks will always go to the configured FortiAuthenticator

BThe OCSP check of the certificate can be combined with a certificate revocation list.

COCSP certificate responses are never cached by the FortiGate.

DIf the OCSP server is unreachable, authentication will succeed if the certificate matches the CA.

Show Suggested Answer

Suggested Answer: B, D

Bis correct because the OCSP check of the certificate can be combined with a certificate revocation list (CRL). This means that the FortiGate will check the OCSP server to see if the certificate has been revoked, and it will also check the CRL to see if the certificate has been revoked.

Dis correct because if the OCSP server is unreachable, authentication will succeed if the certificate matches the CA. This is because the FortiGate will fall back to using the CRL if the OCSP server is unreachable.

The other options are incorrect. Option A is incorrect because OCSP checks can go to other OCSP servers, not just the FortiAuthenticator. Option C is incorrect because OCSP certificate responses can be cached by the FortiGate.

References:

Configuring SSL VPN authentication using digital certificates | FortiGate / FortiOS 7.2.0 - Fortinet Document Library

Online Certificate Status Protocol (OCSP) | FortiGate / FortiOS 7.2.0 - Fortinet Document Library

Certificate Revocation Lists (CRLs) | FortiGate / FortiOS 7.2.0 - Fortinet Document Library

by Sabra at Jul 06, 2024, 07:16 AM

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Luisa

18 days ago

If the OCSP server is down, authentication should fail. Can't just rely on the CA certificate match.

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Huey

25 days ago

I'm not sure about that. I think A and D are the correct answers because OCSP checks will always go to the FortiAuthenticator and if the server is unreachable, authentication will succeed if the certificate matches the CA.

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Filiberto

26 days ago

Haha, imagine if OCSP responses were never cached. The FortiGate would be flooded with requests!

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Gail

10 days ago

User 2: Good thing OCSP responses can be cached, right?

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Lisbeth

11 days ago

User 1: Yeah, that would be a nightmare for the FortiGate.

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Cherrie

29 days ago

I agree with you, Cassie. The OCSP check can be combined with a certificate revocation list and if the server is unreachable, authentication will still succeed.

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