Question

Specify an IPTables rule forwarding incoming HTTP requests to 172.31.0.23.

Accepted Answer

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to 172.31.0.23:80

Front	Specify an IPTables rule forwarding incoming HTTP requests to 172.31.0.23.
Back	iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to 172.31.0.23:80

Iptables Rule Forwarding Incoming Requests T Nat Prerouting