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F5 Networks F5CAB3 Exam - Topic 2 Question 4 Discussion

Actual exam question for F5 Networks's F5CAB3 exam
Question #: 4
Topic #: 2
[All F5CAB3 Questions]

A BIG-IP Administrator creates a new Virtual Server to load balance SSH traffic. Users are unable to log on to the servers.

What should the BIG-IP Administrator do to resolve the issue?

Show Suggested Answer Hide Answer
Suggested Answer: B

SSH is a TCP Layer 4 protocol. Applying an HTTP profile causes BIG-IP to expect HTTP headers, breaking SSH sessions. Removing the HTTP profile allows raw TCP forwarding.


by Tatum at Jan 26, 2026, 06:21 AM

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Naomi
15 hours ago
SSH uses TCP, not UDP.
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Jill
6 days ago
I'd go with the classic "turn it off and on again" approach. Works every time!
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Zana
11 days ago
I bet the BIG-IP Admin is scratching their head right now, wondering how they managed to mess this up.
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Shay
16 days ago
0.0.0.0/0? That's a bit too broad, don't you think?
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Tamie
21 days ago
Setting the HTTP profile to None? Hmm, I don't think that's the right move here.
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Eden
26 days ago
Definitely not UDP, that's for sure!
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Felix
1 month ago
I recall that setting the destination address to 0.0.0.0/0 could allow traffic from anywhere, which might help with connectivity issues.
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Eric
1 month ago
I’m not sure about the source address option, but I think it might be more about the destination settings for SSH traffic.
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Dell
2 months ago
I feel like we had a similar question in practice about setting profiles. If it's SSH, I don't think an HTTP profile would even apply here.
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Shawna
2 months ago
I remember that SSH uses TCP, so I think setting the protocol to UDP is definitely not the right choice.
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Yesenia
2 months ago
Ah, I see what's going on here. The key is that the question is about SSH traffic, not HTTP. So the answer is definitely not B) Set HTTP Profile to None. I think the best option is A) Set Protocol to UDP, since that would ensure the BIG-IP is handling the SSH traffic correctly.
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Jeannetta
3 months ago
I'm pretty sure the answer is not C) Set Source Address to 10.1.1.2, since that wouldn't really address the issue of users not being able to log in. I'm going to go with B) Set HTTP Profile to None, since that seems the most relevant to the problem.
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Loise
3 months ago
Okay, let's see. The question says the users can't log in, so it's probably an issue with the protocol or the destination address. I'm leaning towards D) Set Destination Address/Mask to 0.0.0.0/0, but I'm not 100% sure.
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Candida
3 months ago
Hmm, I'm a bit confused. I thought the BIG-IP was used for load balancing, so maybe the answer has something to do with that? I'll need to think this through carefully.
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Anthony
3 months ago
I'm pretty sure the answer is B) Set HTTP Profile to None, since this is a question about SSH traffic and not HTTP.
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