Create a DMZ
When you create a DMZ ,enable DMZ , put the IP adress of the PC or PS3 or another device in the DMZ field. Disable the UPnP mode .
That means all ports ( TPC and UDP ports ) are open and redirected to the IP adress which is written in the DMZ field.
Connection to the router setup : user = admin , password = sky
With firefox
With Internet Explorer
Create DMZ with the IP adress of the PC (example : VPN client) or PS3
Click on APPLY
Disable UPnP service
Click on APPLY