LPI Exam 202-450 Topic 7 Question 110 Discussion

Actual exam question for LPI's 202-450 exam

Question #: 110
Topic #: 7

When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?

AAll traffic to localhost must always be allowed

BIt doesn't matter; netfilter never affects packets addressed to localhost

CSome applications use the localhost interface to communicate with other applications

Dsyslogd receives messages on localhost

EThe iptables command communicates with the netfilter management daemon netfilterd on localhost to create and change packet filter rules

Show Suggested Answer

Suggested Answer: C

by Elly at Apr 05, 2025, 09:33 AM

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Eleonore

3 days ago

I agree with Josue. It's important to allow traffic to localhost for certain applications to function properly.

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Josue

10 days ago

I think a rule allowing traffic to localhost should exist because some applications use the localhost interface to communicate with other applications.

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Carey

16 days ago

C is the correct answer. Applications like database servers often use the localhost interface for internal communication, so a rule allowing this traffic is necessary.

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