Open a web browser window and go to the admin page of the Barricade. 192.168.123.254 is the address. Log in and select "virtual server". Then enter the ports you want open (you can have up to 10, but you can't specify a range) and the IP of the computer you want them open on. Click "enable" for each one, then click save, then click reboot the router. And you should be set.