Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

A Linux host is being configured as a gateway between an internal 172.16.0.0/24 network and the public Internet. After enabling packet forwarding, the administrator issues the command:

iptables -t nat -A POSTROUTING -s 172.16.0.0/24 -o eth0 -j SNAT --to-source 203.0.113.14

Which statement best describes the kind of address translation this rule performs and the point in the netfilter packet-flow where it occurs?

  • Destination NAT in the POSTROUTING chain, altering the destination address after routing but before transmission.

  • Source NAT in the POSTROUTING chain, rewriting the packet's source address just before it leaves eth0.

  • Destination NAT in the PREROUTING chain, redirecting incoming traffic on eth0 before any routing decision.

  • Source NAT in the INPUT chain, changing the source address of packets addressed to the local host.

CompTIA Linux+ XK0-006 (V8)
Security
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