HOW TO FORWARD PORTS TO YOUR DEVICES WITH IPTABLES   You need to create a basic DNAT on your router. Remember that the router GUI usually forwards ports from the WAN to LAN. When connected to the VPN you must forward ports from TUN interface to the final destination. Therefore, it is important that you do not forward ports through the GUI of the router.   Assuming that: destIP is the IP address of the destination device port is the port you wish to forward to that device