Eccouncil Exam ICS-SCADA Topic 5 Question 9 Discussion

Actual exam question for Eccouncil's ICS-SCADA exam

Question #: 9
Topic #: 5

How many firewalls are there in the most common ICS/SCADA architecture?

CNone of these

Show Suggested Answer

Suggested Answer: D

The most common ICS/SCADA architecture typically includes two firewalls. This dual firewall configuration often involves one firewall placed between the enterprise network and the ICS/SCADA network, and another between the ICS/SCADA network and the plant floor devices. This arrangement, known as a 'demilitarized zone' (DMZ) between the two firewalls, adds an additional layer of security to help isolate and protect sensitive operational technology (OT) environments from threats originating from IT networks. Reference:

National Institute of Standards and Technology (NIST), 'Guide to Industrial Control Systems (ICS) Security'.

by Larae at Jul 02, 2024, 03:33 PM

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Celestina

10 months ago

I'm feeling confident that the correct answer is D, 2 firewalls. That's the standard configuration I've seen in most industrial control systems.

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Brynn

9 months ago

I agree with you, D seems like the correct answer.

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Shaun

10 months ago

I'm not sure, but I think it might be B, 1 firewall.

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Carlee

10 months ago

I believe it's D, 2 firewalls.

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Gregoria

10 months ago

I think the answer is A, 3 firewalls.

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Candida

10 months ago

Haha, if there were no firewalls, I'd be pretty worried about the security of the ICS/SCADA system! Gotta be at least 1, right?

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Shawna

10 months ago

I think the answer is B) 1, as having just one firewall may be sufficient for some ICS/SCADA architectures.

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Deonna

10 months ago

I'm not sure, but I think having multiple firewalls would provide better security.

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Danilo

11 months ago

Well, I know there's at least 1 firewall, but 3 seems like a lot. Maybe the answer is D, 2 firewalls?

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Fairy

9 months ago

Yeah, 2 firewalls sounds more reasonable in the common ICS/SCADA architecture.

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Caitlin

9 months ago

I agree, having 3 firewalls does seem like a lot.

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Janessa

9 months ago

I think the answer is D, 2 firewalls.

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Kristofer

9 months ago

Yeah, 2 firewalls sounds more reasonable in the common ICS/SCADA architecture.

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Willie

9 months ago

I agree, having 3 firewalls does seem like a lot.

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Marshall

10 months ago

I think the answer is D, 2 firewalls.

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Natalie

11 months ago

I disagree, I believe the answer is D) 2.

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Lillian

11 months ago

Hmm, I'm going to have to go with 'None of these'. I think the number can vary depending on the specific architecture.

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Catalina

10 months ago

I'm going with 'None of these'.

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Brice

10 months ago

I think it's 2.

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Huey

11 months ago

I'm pretty sure it's 2 firewalls. That's what I remember from my ICS/SCADA security training.

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Kristofer

10 months ago

Great, thanks for confirming!

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Mira

10 months ago

Yes, 2 firewalls is the correct answer.

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Alesia

10 months ago

I remember learning that too.

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Gussie

10 months ago

I think it's 2 firewalls.

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Crista

11 months ago

I think the answer is A) 3.

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