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Palo Alto Networks PCSFE Exam - Topic 7 Question 27 Discussion

Actual exam question for Palo Alto Networks's PCSFE exam
Question #: 27
Topic #: 7
[All PCSFE Questions]

Why are VM-Series firewalls and hardware firewalls that are external to the Kubernetes cluster problematic for protecting containerized workloads?

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Suggested Answer: A

VM-Series firewalls and hardware firewalls that are external to the Kubernetes cluster are problematic for protecting containerized workloads because they are located outside the cluster and have no visibility into application-level cluster traffic. Kubernetes is a platform that provides orchestration, automation, and management of containerized applications. Kubernetes cluster traffic consists of traffic between containers within a pod, across pods, or across namespaces. VM-Series firewalls and hardware firewalls that are external to the Kubernetes cluster cannot inspect or control this traffic, as they only see the encapsulated or aggregated traffic at the network layer. This creates blind spots and security gaps for containerized workloads. VM-Series firewalls and hardware firewalls that are external to the Kubernetes cluster are not problematic for protecting containerized workloads because they do not scale independently of the Kubernetes cluster, are managed by another entity when located inside the cluster, or function differently based on whether they are located inside or outside of the cluster, as those are not valid reasons or scenarios for firewall deployment in a Kubernetes environment. Reference:Palo Alto Networks Certified Software Firewall Engineer (PCSFE), [CN-Series Concepts], [VM-Series on Kubernetes]


by Maryln at Aug 23, 2024, 06:28 PM

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Reid
3 months ago
D is interesting, I never considered the location impact before!
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Lashaunda
3 months ago
Really? I thought they could adapt to the cluster's needs.
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Fidelia
3 months ago
B makes sense, scaling is crucial for Kubernetes.
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Howard
4 months ago
I disagree, hardware firewalls can still be effective.
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Lemuel
4 months ago
A is spot on! No visibility means less security.
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Kattie
4 months ago
I vaguely recall something about how firewalls behave differently based on their location, but I can't remember the specifics.
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Gaston
4 months ago
I feel like the management aspect could be a problem too, especially if the firewalls are handled by a different team.
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Roxanne
4 months ago
I think I came across a question about scaling firewalls with Kubernetes, but I'm not entirely sure how that affects security.
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Val
5 months ago
I remember studying that external firewalls lack visibility into the internal traffic of the cluster, which seems like a big issue.
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Benedict
5 months ago
I see, the question is really getting at the differences in how these firewalls function based on their location relative to the Kubernetes cluster. That's an important consideration for protecting containerized environments.
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Rene
5 months ago
Hmm, I'm not sure I fully grasp the scaling aspect. Why would the firewalls not scale independently of the Kubernetes cluster? I'll need to review that part more closely.
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Joye
5 months ago
Okay, I think I understand the key issue here. Since the firewalls are located outside the cluster, they won't have visibility into the application-level traffic within the cluster. That could be a big problem for protecting containerized workloads.
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Tijuana
5 months ago
This seems like a tricky question. I'll need to think carefully about the differences between VM-Series firewalls and hardware firewalls that are external to the Kubernetes cluster.
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Angelo
5 months ago
The management aspect is interesting. If the firewalls are managed by another entity when located inside the cluster, that could create some challenges in terms of coordinating security policies and controls.
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Nobuko
5 months ago
Performance Testing? I don't know, that seems more focused on the technical aspects of the product rather than the overall user experience.
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Tori
1 year ago
D) They function differently based on whether they are located inside or outside of the cluster.
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Dorothy
1 year ago
C) They are managed by another entity when located inside the cluster.
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William
1 year ago
B) They do not scale independently of the Kubernetes cluster.
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Latricia
1 year ago
Ha! Trying to secure containers with external firewalls is like trying to catch a cloud with a net. Option A is the only sensible choice.
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Franchesca
1 year ago
Tasia: It's like trying to catch a cloud with a net!
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Tasia
1 year ago
That's right, they have no visibility into the application-level traffic.
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Brittni
1 year ago
I agree, external firewalls can't see inside the cluster.
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Lashawn
1 year ago
A) They are located outside the cluster and have no visibility into application-level cluster traffic.
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Pamela
1 year ago
D is also an interesting choice. The location of the firewall can definitely impact its functionality. But I think A is the most relevant answer here.
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Julene
1 year ago
I agree with Carman. These external firewalls are blind to the internal cluster traffic, rendering them useless for securing containers. Option A is the way to go.
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Pauline
1 year ago
Definitely, it's important to have security measures that can monitor cluster traffic.
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Georgeanna
1 year ago
So, option A is the best choice for protecting containerized workloads.
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Louvenia
1 year ago
That's right, they have no visibility into application-level traffic.
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Mozell
1 year ago
I agree, external firewalls can't see inside the cluster.
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Erasmo
1 year ago
Yes, they are blind to the internal traffic, which is a big problem.
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Alana
1 year ago
I agree, external firewalls can't see inside the cluster.
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Carman
1 year ago
Option A is the correct answer. VM-Series firewalls and hardware firewalls outside the cluster can't see the traffic within the cluster, making them ineffective for protecting containerized workloads.
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Sheron
1 year ago
B) They do not scale independently of the Kubernetes cluster.
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Nieves
1 year ago
A) They are located outside the cluster and have no visibility into application-level cluster traffic.
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