Gateway iptables NAT Port Forwarding Cheat Sheet Port 80/TCP iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.0.31:80 iptables -t nat -A POSTROUTING -p tcp --dport 80 -j MASQUERADE Port 443/TCP iptables -t nat -A PREROUTING -p tcp --dport 443 -j