Port Forward On Belkin F5D7633-4

I'm after a bit of information regarding Port Forwarding....What I'm trying to do is allow remote access to my router from outside the network if say I'm on holiday....Now the thing is I know Port 80 is a bit of a no go port but when I try any other port it fails to open ?
However if I open port 80 and type

http://yourdynamichostname:80/

on my neighbours PC it allows me to access the router using my router password.........How come all other ports seem closed ? I have tried restarting the router after making the changes but it's just the same, is there anything else I can try ?

Thanks in advance.

Thanks for that Master G, I followed the guide in the link, however It's just the same..."Port 5631 is closed on xx.xxx.xxx.xx." and "Port 5632 is closed on xx.xxx.xxx.xx."
The only difference with my set up was I had the DHCP Server set to "Off", I did try it "On" as well, but it was just the same.

Any other ideas ?

Yes, done a reboot and tried canyouseeme however It's just the same.

Thanks.

Could my McAfee Firewall be blocking the ports ?

Cheers.