Exam XK0-004 topic 1 question 163 discussion

Actual exam question from CompTIA's XK0-004

Question #: 163
Topic #: 1

A Linux administrator is updating iptables rules and is given the following tasks:
✑ Output a list of iptables rules.
✑ Remove all iptables rules.
Which of the following actions should be performed from the terminal console to accomplish these tasks? (Choose two.)

A. iptables -F
B. iptables -L
C. iptables -I
D. iptables -C
E. iptables -A
F. iptables -N

Show Suggested Answer

Suggested Answer: AB 🗳️
Reference:
https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules

by Dan_Dan_The_Data_Center_Man at Nov. 9, 2021, 3:53 p.m.

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DiaaEmara

2 years, 7 months ago

Listing Rules as Tables Listing the iptables rules in the table view can be useful for comparing different rules against each other. To output all of the active iptables rules in a table, run the iptables command with the -L option: sudo iptables -L Flushing a Single Chain To flush a specific chain, which will delete all of the rules in the chain, you may use the -F, or the equivalent --flush, option and the name of the chain to flush. For example, to delete all of the rules in the INPUT chain, run this command: sudo iptables -F INPUT Flushing All Chains To flush all chains, which will delete all of the firewall rules, you may use the -F, or the equivalent --flush, option by itself: sudo iptables -F

upvoted 1 times

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pinonino

3 years, 1 month ago

Absolutely agree answers are A and B

upvoted 3 times

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Dan_Dan_The_Data_Center_Man

3 years, 8 months ago

Correct Answers: A. iptables -F B. iptables -L Listing Rules as Tables To output all of the active iptables rules in a table, run the iptables command with the -L option: sudo iptables -L Flushing Chains For example, to delete all of the rules in the INPUT chain, run this command: sudo iptables -F INPUT

upvoted 4 times

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