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GIAC GCED Exam - Topic 4 Question 7 Discussion

When running a Nmap UDP scan, what would the following output indicate?
A) The port may be open on the system or blocked by a firewall
B) The router in front of the host accepted the request and sent a reply
C) An ICMP unreachable message was received indicating an open port
D) An ACK was received in response to the initial probe packet

GIAC GCED Exam - Topic 4 Question 7 Discussion

Actual exam question for GIAC's GCED exam
Question #: 7
Topic #: 4
[All GCED Questions]

When running a Nmap UDP scan, what would the following output indicate?

Show Suggested Answer Hide Answer
Suggested Answer: A

When Nmap shows an ''open filtered'' response for the scan results, this indicates a couple of different reasons. The port could be open but a firewall could be blocking the use ACK flags; only TCP packets do.


by Wynell at May 08, 2022, 06:29 PM

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Pete
9 months ago
D doesn’t make sense in a UDP scan context.
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Beckie
9 months ago
Wait, C says an open port? That sounds off.
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Stephanie
10 months ago
B is misleading, routers don’t reply like that.
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Jarvis
10 months ago
Totally agree, that's how UDP works!
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Daniel
10 months ago
A means the port could be open or blocked, right?
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Latrice
10 months ago
I vaguely recall that an ACK response is more related to TCP, not UDP. So, I don’t think option D is correct. It’s definitely between A and B for me.
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Queenie
10 months ago
I’m a bit confused about the ICMP messages. I thought they were only for unreachable ports, but option C mentions an open port. That doesn’t seem right to me.
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Teddy
10 months ago
I practiced a similar question last week, and I think the output could indicate that the port is either open or blocked. So, I might lean towards A as well.
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Shelba
10 months ago
I remember that UDP scans can be tricky because they often don't give clear results like TCP scans do. I think option A sounds familiar, but I'm not entirely sure.
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Felicia
10 months ago
Based on the requirement to send the email to unsubscribed customers, I believe the Delivery Profile is the component that should be configured to provide this functionality.
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Nickolas
10 months ago
Ah, this is a good one. Data Loader is a powerful tool, but I'm not totally sure about all its features. I'll have to review the key capabilities before answering this.
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Winfred
10 months ago
Hmm, this looks like a tricky one. I'll need to think through the JSF life cycle carefully to figure out the right approach.
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