I'm using Windows 7. I'm using a ADSL Modem provided by my ISP to connect to the Internet. I'm using a TP-Link Access Point (WR941ND) to connect to the ADSL Modem and then I connect my computer to the Access Point.
Internet <-> ADSL Modem <-> Access Point <-> Computer
My problem is this: I want to use UPNP to open ports to the Internet. My applications says the ports are open, I can see that in Access Point (WR941ND) acknowledges the request to open the ports and says they are open. But when I try to connect with the application through UPNP the connection is refused.
I made sure that I have a connection to the Internet. In every other way the connection is good. I made sure that UPNP is enable in both the ADSL Modem and the Access Point. As far I can understand the ports are open up to the Access Point but not beyond that.
This means that the problem is in the ADSL Modem.
Can anybody help me?