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GAQM CPEH-001 Exam - Topic 6 Question 26 Discussion

You are doing IP spoofing while you scan your target. You find that the target has port 23 open. Anyway you are unable to connect. Why?
A) A firewall is blocking port 23
B) You cannot spoof + TCP
C) You need an automated telnet tool
D) The OS does not reply to telnet even if port 23 is open

GAQM CPEH-001 Exam - Topic 6 Question 26 Discussion

Actual exam question for GAQM's CPEH-001 exam
Question #: 26
Topic #: 6
[All CPEH-001 Questions]

You are doing IP spoofing while you scan your target. You find that the target has port 23 open. Anyway you are unable to connect. Why?

Show Suggested Answer Hide Answer
Suggested Answer: A

The question is not telling you what state the port is being reported by the scanning utility, if the program used to conduct this is nmap, nmap will show you one of three states -- ''open'', ''closed'', or ''filtered'' a port can be in an ''open'' state yet filtered, usually by a stateful packet inspection filter (ie. Netfilter for linux, ipfilter for bsd). C and D to make any sense for this question, their bogus, and B, ''You cannot spoof + TCP'', well you can spoof + TCP, so we strike that out.


by Derick at May 03, 2022, 09:06 AM

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Yoko
9 months ago
Not sure about needing an automated tool, seems like overkill.
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Gwen
10 months ago
Wait, so even if port 23 is open, it might not respond? That's surprising!
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Jarod
10 months ago
You can't spoof TCP connections, that's a fact.
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Chana
10 months ago
Definitely a firewall issue, I agree!
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Victor
10 months ago
Port 23 is usually telnet, but it might be disabled.
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Malcolm
10 months ago
I practiced a similar question where the OS didn't respond even if the port was open, so D could be the right answer.
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Blythe
10 months ago
I'm not entirely sure, but I think TCP connections require a proper handshake, and spoofing might mess that up.
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Gerald
10 months ago
I remember reading that firewalls can block specific ports, so option A seems plausible.
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Rosann
10 months ago
I feel like using an automated tool might help, but I can't recall if that's necessary for telnet connections.
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Nobuko
10 months ago
Ah, I've seen this before. Assigning the right permission set should do the trick. I'll make sure the user has the necessary access.
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Karma
10 months ago
Ah, I see the challenge here. Preventing new sessions without disrupting active ones is tricky. Enabling JIT VM access could be a potential solution, but I'll need to carefully review the details to ensure it aligns with the requirements.
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