UPnP (Universal Plug and Play) feature makes the Vigor router accept UPnP request from LAN devices, and automatically open the ports so that packets are able to pass through NAT in order to allow Internet device to access internal network.
Go to Applications >> UPnP,
2. Enter the command “upnp nat ”
3. In this example, the UPnP device (Private IP 192.168.1.10) requested for the port 4321 with TCP in the index 1 and the port 1234 with UDP in the index 2.
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