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Question 254 - XK0-005 discussion

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A systems administrator is configuring a Linux system so the network traffic from the internal network 172.17.0.0/16 going out through the eth0 interface would appear as if it was sent directly from this interface. Which of the following commands will accomplish this task?

A.
iptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE
Answers
A.
iptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE
B.
firewalld -A OUTPUT -s 172.17.0.0/16 -o eth0 -j DIRECT
Answers
B.
firewalld -A OUTPUT -s 172.17.0.0/16 -o eth0 -j DIRECT
C.
nmcli masq-traffic eth0 -s 172.17.0.0/16 -j MASQUERADE
Answers
C.
nmcli masq-traffic eth0 -s 172.17.0.0/16 -j MASQUERADE
D.
ifconfig -- nat eth0 -s 172.17.0.0/16 -j DIRECT
Answers
D.
ifconfig -- nat eth0 -s 172.17.0.0/16 -j DIRECT
Suggested answer: A

Explanation:

This command will use the iptables tool to append a rule to the POSTROUTING chain of the nat table, which will match any packet with a source address of 172.17.0.0/16 and an output interface of eth0, and apply the MASQUERADE target to it.This means that the packet will have its source address changed to the address of the eth0 interface, effectively hiding the internal network behind a NAT12.

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asked 02/10/2024
Shan Panikker
28 questions
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