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F5 Networks 303 Exam - Topic 3 Question 28 Discussion

-- Exhibit ---- Exhibit --Refer to the exhibit.An LTM Specialist is investigating reports that users are unable to perform some commands through an FTP virtual server. The users are receiving the FTP error "500 Illegal PORT command." The virtual server is configured to SNAT using automap. The LTM Specialist performs a capture on the server side of the LTM device.Why is the server returning this error?
C) Active IP address in PORT command
A) LIST command disallowed
B) PORT command disallowed
D) Active IP address in LOGIN command

F5 Networks 303 Exam - Topic 3 Question 28 Discussion

Actual exam question for F5 Networks's 303 exam
Question #: 28
Topic #: 3
[All 303 Questions]

-- Exhibit --

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is investigating reports that users are unable to perform some commands through an FTP virtual server. The users are receiving the FTP error "500 Illegal PORT command." The virtual server is configured to SNAT using automap. The LTM Specialist performs a capture on the server side of the LTM device.

Why is the server returning this error?

Show Suggested Answer Hide Answer
Suggested Answer: C

by Yaeko at Apr 10, 2026, 12:31 AM

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Kristal
1 day ago
Wait, could it be C? The active IP might be causing the problem.
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Rossana
6 days ago
Totally agree, that error usually means the PORT command isn't accepted.
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Francesco
11 days ago
B) PORT command disallowed is likely the issue.
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Nobuko
17 days ago
I didn't know FTP could throw such specific errors!
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Gaynell
22 days ago
Wait, are we sure it's not the active IP in the PORT command?
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Xochitl
27 days ago
I thought the LIST command could be the problem too.
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Mendy
2 months ago
Totally agree, that's a common issue with FTP setups.
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Brianne
3 months ago
Looks like the PORT command is disallowed.
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Lang
3 months ago
I'm a bit confused about the difference between the active IP address in the PORT command and the LOGIN command. Which one is more likely to cause this error?
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Franklyn
3 months ago
I feel like the LIST command was mentioned in another practice question, but I don't think that's the issue here.
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Rosina
3 months ago
I remember practicing a similar question where the issue was about the active IP address in the PORT command. Could that be it?
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Denna
4 months ago
I think the error might be related to the PORT command being disallowed, but I'm not entirely sure.
upvoted 0 times
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