ή αλλιώς οπως μου ειπε ενας φιλος εδω στο χωριο :
You can check whether you’re on a CGN network by visiting a Web site such as ipaddress.com or whatsmyip.com and comparing the IP address listed to the public/WAN IP address assigned to your Internet gateway. To find your gateway’s public IP address, check the status page in the administrative interface. If the two IP addresses differ, you’re likely on a CGN network. If so, you will have trouble establishing Screens connections to the network in question, but it may be possible to request a static IP address from your ISP to avoid connectivity issues.