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F5 Networks 301b Exam - Topic 2 Question 108 Discussion

What does the following iRule do?when CLIENT_ACCEPTED {if { [matchclass [IP::client_addr] equals WebClient1-Whitelist1] }{#log local0. "Valid client IP: [IP::client_addr] - forwarding traffic"#Pool WebClient1} else {log local0. "Invalid client IP: [IP::client_addr] - discarding"discard}}
B) The iRule compares a client IP to a list. If the client IP is NOT on the list, discard and log the discard.
A) The iRule compares a client IP to a list. If the client IP is on the list, discard and log the discard.
C) The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
D) The iRule compares a client IP to a list. If the client IP is NOT on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

F5 Networks 301b Exam - Topic 2 Question 108 Discussion

Actual exam question for F5 Networks's 301b exam
Question #: 108
Topic #: 2
[All 301b Questions]

What does the following iRule do?

when CLIENT_ACCEPTED {

if { [matchclass [IP::client_addr] equals WebClient1-Whitelist1] }{

#log local0. "Valid client IP: [IP::client_addr] - forwarding traffic"

#Pool WebClient1

} else {

log local0. "Invalid client IP: [IP::client_addr] - discarding"

discard

}

}

Show Suggested Answer Hide Answer
Suggested Answer: B

by Zona at Mar 09, 2025, 11:04 AM

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Broderick
9 months ago
Not sure about this, can someone explain why it discards instead of just logging?
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Clay
10 months ago
Wait, so it discards invalid IPs? That's a solid security move!
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Nicolette
10 months ago
I thought it was option B at first, but C makes more sense.
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Tuyet
10 months ago
Definitely option C, it forwards valid clients to the pool.
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Viva
10 months ago
The iRule checks if the client IP is in a whitelist.
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Arlette
10 months ago
I'm a bit confused. I thought it was about discarding invalid IPs, but I can't remember if it forwards valid ones to a pool or just logs them.
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Skye
11 months ago
I feel like it does something with forwarding to a pool if the IP is valid, but I can't recall if it logs the valid or invalid ones. Could it be option C?
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Cherilyn
11 months ago
I remember practicing a similar question, and I think the key is that it discards traffic if the IP is not on the list. So, maybe it's option B?
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Tommy
11 months ago
I think the iRule checks if the client IP is in a whitelist, and if it is, it forwards the traffic. But I'm not sure about the logging part.
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Lonna
11 months ago
This seems pretty straightforward. I just need to make sure I understand the difference between the "equals" and "not equals" options in the multiple-choice answers.
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Denise
11 months ago
I'm not too familiar with iRules, but I think I can figure this out. The key is understanding how the IP address matching and discarding works.
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Denny
11 months ago
Okay, let me break this down step-by-step. The rule checks if the client IP is in the "WebClient1-Whitelist1" class. If it is, it forwards the traffic. If not, it discards the traffic and logs a message.
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Vicki
11 months ago
Hmm, I'm a bit confused about the logic here. I need to re-read this a few times to make sure I understand what's happening.
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Wei
11 months ago
This looks like a straightforward IP address filtering rule. I think I can handle this one.
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Nana
1 year ago
I bet the person who wrote this iRule was channeling their inner Sherlock Holmes, trying to catch those sneaky clients with their IP addresses. 'The game is afoot, Watson!'
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Georgene
1 year ago
This iRule is like a bouncer at a club - it's checking the client's IP address to see if they're on the VIP list. If they are, they get in. If not, they get the boot and a log entry. Gotta love these security measures!
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Kattie
1 year ago
C) The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
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Lashawnda
1 year ago
That's a good analogy! It's like a bouncer checking the VIP list at a club.
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Lai
1 year ago
A) The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
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Curtis
1 year ago
Hmm, this is a tricky one. I'm leaning towards option C, but I'm not 100% sure. Maybe I should re-read the question and the code a few more times to make sure I'm not missing anything.
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Lavera
1 year ago
Let's go with option C then. It makes sense with how the iRule is set up.
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Alecia
1 year ago
I'm not sure, but after reading the code again, I think option C is the most logical answer.
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Carmen
1 year ago
I agree, option C seems to be the right choice based on the iRule code provided.
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Tuyet
1 year ago
I think option C is correct. It sends the client to Pool WebClient1 if the IP is on the whitelist.
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Kris
1 year ago
I'm not sure, but I think it might be D because it sends the client to Pool WebClient1 if the IP is NOT on the list.
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Providencia
1 year ago
Ah, I see! The iRule is checking if the client IP is on the whitelist. If it is, it forwards the traffic to the WebClient1 pool. Otherwise, it discards the traffic and logs the invalid IP. Makes sense to me.
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Virgina
1 year ago
That's right. It helps ensure only valid clients are allowed to access the pool.
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Darrin
1 year ago
Exactly! It's a way to control access based on client IP.
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Adelle
1 year ago
I agree with you, Angella. Option C makes the most sense based on the iRule provided.
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Iluminada
1 year ago
This iRule is definitely comparing the client IP to a list, but I'm not sure what the intended behavior is. Is it supposed to discard or forward the traffic? I'll need to read it more carefully.
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Sherell
1 year ago
So, the answer is C.
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Eric
1 year ago
If not, it discards the traffic and logs the discard.
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Hillary
1 year ago
If it is, it forwards the traffic to Pool WebClient1.
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Shannan
1 year ago
It checks if the client IP is on a whitelist.
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Angella
1 year ago
I think the answer is C because it sends the client to Pool WebClient1 if the IP is on the list.
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