XK0-005 · Question #720
XK0-005 Question #720: Real Exam Question with Answer & Explanation
The correct answer is A: iptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE. The command iptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE configures Network Address Translation (NAT) using iptables. This ensures that traffic from the internal network (172.17.0.0/16) going out through the eth0 interface will appear to be originating from the
Question
A systems administrator is configuring a Linux system so that 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?
Options
- Aiptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE
- Bfirewalld -A OUTPUT -s 172.17.0.0/16 -o eth0 -j DIRECT
- Cnmcli snasq-traffic eth0 -s 172.17.0.0/16 -j MASQUERADE
- Difconfig --nat eth0 -s 172.17.0.0/16 -j DIRECT
Explanation
The command iptables -A POSTROUTING -s 172.17.0.0/16 -o eth0 -j MASQUERADE configures Network Address Translation (NAT) using iptables. This ensures that traffic from the internal network (172.17.0.0/16) going out through the eth0 interface will appear to be originating from the eth0 IP address. This is commonly used for internet-sharing or NAT setups in Linux.
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