Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

You are converting a Linux host into an edge router. The external interface eth0 receives its public IPv4 address dynamically from the ISP, and the internal subnet 192.168.50.0/24 must reach the Internet through that single address using port translation. Which single iptables command correctly enables Port Address Translation for this situation?

  • iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.50.10

  • iptables -t nat -A POSTROUTING -s 192.168.50.0/24 -o eth0 -j SNAT --to-source 203.0.113.5

  • iptables -t filter -A FORWARD -s 192.168.50.0/24 -o eth0 -j ACCEPT

  • iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

CompTIA Linux+ XK0-006 (V8)
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