I should have added in that my currrent router is a piece of crap. Cable provider gave me one that has the most limited options ever, port forwarding only allows me to specify a port range to redirect and not a destination port so i am screwed either way

Hopefully at some stage i'll figure out how to use this mode/router as just a modem and stick on my own router, but until then I need to try find a solution for it.
I wonder if it is possible that these things are just disabled, will need to ring UPC lol
p.s. thanks for the reply.