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GIAC GPEN Exam - Topic 8 Question 88 Discussion

Posted by Clorinda on Jun 19, 2026 at 07:26 AM

Which of the following ports must you filter to check null sessions on your network?

Suggested Answer: A

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12 comments · newest first
PA
Paola 2 months ago
I feel like A is the best answer too. Those ports are crucial for security checks.
RO
Ronny 2 months ago
Agreed! A is definitely the right choice. It's all about SMB.
CE
Cecilia 2 months ago
I think it's A) 139 and 445. Those are common for null sessions.
RO
Robt 2 months ago
B and C don't even make sense for this.
SA
Sage 2 months ago
Yup, definitely A. It's all about SMB traffic!
WE
Weldon 2 months ago
Wait, are you sure about that? I thought it was different ports.
ME
Melodie 3 months ago
Totally agree, those are the common ones for null sessions.
AJ
Aja 3 months ago
A) 139 and 445 are the ones to watch.
LA
Lamonica 3 months ago
I can't remember the exact ports, but I feel like null sessions were mentioned in relation to SMB. That might be 139 and 445 too.
LY
Lynna 3 months ago
I definitely recall that 139 and 445 are important for Windows networking, so I’m leaning towards option A.
VA
Valene 3 months ago
I'm not entirely sure, but I feel like we practiced something similar with filtering ports for security. Was it 111 and 222?
PA
Paris 4 months ago
I think I remember that ports 139 and 445 are related to file sharing and could be involved in null sessions.
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