port forwarding to access internal pc from exteral network

if your computer is 10.0.0.5 and and it connects to a router for internet connection with eth1 ( 10.0.0.1 ) and eth0 ( 192.168.0.244 ) , and now you want to access the the PC 10.0.0.5 through remote access from a 192.168.0.X network on port 3389.. type the following command
iptables -t nat -A PREROUTING -p tcp -i eth0 -d 192.168.0.244 --dport 3389 -j DNAT --to 10.0.0.5:3389

iptables -A FORWARD -p tcp -i eth0 -d  10.0.0.5 --dport 3389 -j ACCEPT

/etc/init.d/iptables save

hope this helps all !!!

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