Astazi am facut port forward in linux

Pentru vizualizare:
service iptables status
sau
iptables --list

iptables -t nat -I PREROUTING -p tcp -i INTERNET --dport 9996 -j DNAT --to 192.168.x.xx:9996

iptables -A FORWARD -p tcp -i INTERNET --dport 9996 -d 192.168.x.xx -j ACCEPT