Can be resolved through UPnP mapping and the DMZ host.
Router default IP is 192.168.1.1, (if changed, please fill in the Gateway IP), the default username and password is generally written on the back of the router.
After landing to select the firewall ===dmz host = = your own computer IP fill in = = = Save, so that your computer display is outside the net, the landing of the mule can be. Sometimes also need to click the firewall = = = Enable upup== Save (fast speed of thunder effective). The IP and NDS addresses of your computer can be found in the router's network connection.