If I'm not wrong, every router should be able to forward ports. O_o
Try googling your router model together with "port forwarding" or "forward port". Some routers call that kind of stuff differently. The option might be somewhere where you can set up the "network configuration for your games", etc. I remember that a router had a list of several games with ports that are used by those games. It took me a few minutes to realize that this is actually where ports are forwarded.