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F5 Networks 301b Exam - Topic 8 Question 115 Discussion

Actual exam question for F5 Networks's 301b exam
Question #: 115
Topic #: 8
[All 301b Questions]

Which iRule will reject any connection originating from a 10.0.0.0/8 network?

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Suggested Answer: C

by Kelvin at Jul 31, 2025, 04:05 AM

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Royal
4 months ago
I agree with C, it makes the most sense!
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Reynalda
4 months ago
Wait, can you really use local_addr like that?
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Shawana
4 months ago
I think A is the right choice.
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Stefania
5 months ago
Definitely not B, that one's off.
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Genevieve
5 months ago
Option C looks correct to me.
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Ira
5 months ago
I'm leaning towards option D, but I remember something about using IP::client_addr instead of IP::local_addr for rejecting connections.
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Percy
5 months ago
I feel like option C is the right choice since it uses the correct mask for the 10.0.0.0/8 network, but I might be mixing it up with another question.
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Paz
5 months ago
I remember practicing a similar question where we had to reject specific IP ranges, but I can't recall the exact syntax for the mask.
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Francis
6 months ago
I think option A is wrong because it uses IP::local_addr instead of IP::remote_addr, but I'm not completely sure.
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Justine
6 months ago
Ah, I see what's going on here. The key is to use the correct IP address - the remote client's IP, not the local address. I think option A is the way to go, but I'll verify the details one more time to be sure.
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Socorro
6 months ago
This is a tricky one. I'm not super familiar with iRules, so I'll need to take my time and really analyze each option to make sure I understand how the IP address is being handled. Hopefully, I can eliminate the incorrect choices and land on the right answer.
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Viola
6 months ago
Okay, let me think this through step-by-step. I need to find the option that uses the remote client's IP address and checks if it's in the 10.0.0.0/8 network. I think that's option A, but I'll double-check the details.
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Emerson
6 months ago
Hmm, I'm a bit unsure about this one. I need to carefully review the options and make sure I understand how the IP address is being extracted and compared in each case.
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Shaquana
7 months ago
This looks like a straightforward iRule question. I think I can handle this one - the key is to identify the correct IP address to check against the 10.0.0.0/8 network.
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Brock
7 months ago
I'm not sure, but I think B could also be a possible answer.
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Lachelle
7 months ago
I disagree, I believe the correct answer is C.
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Vince
7 months ago
Ha! Imagine if the correct answer was 'D' and it was checking the local IP address instead of the remote one. That would be a real head-scratcher!
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Ocie
7 months ago
I'm not sure about using [IP::addr] to get the remote IP address. Wouldn't it be better to use [IP::client_addr] instead?
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Heidy
3 months ago
It can be, but [IP::client_addr] is preferred for clarity.
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Larue
3 months ago
But isn't [IP::addr] still valid in some cases?
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Elmira
4 months ago
True, it targets the right address.
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King
4 months ago
I think [IP::client_addr] is more accurate for client connections.
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Adell
8 months ago
Option A looks good, it's checking the remote IP address and rejecting connections from the 10.0.0.0/8 network.
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Rosendo
7 months ago
User 1: Option A looks good, it's checking the remote IP address and rejecting connections from the 10.0.0.0/8 network.
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Kattie
8 months ago
I think the answer is A.
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