Simply put, UPNP can get through the complete mapping relationship between intranet and routing, establish a transparent point-to-point network connection, and maximize the download speed of software. The opening steps are as follows:

1. Click "IP"-"UPnP", select "Enable" and "Allow" to disable the external interface, check and click Apple, confirm and save the settings.

2. Reopen the IP”-“UPNP Settings interface, click Interface, and then click+in the UPNP Interface Settings interface to add two configurations.

If PPPOE accesses an external network, please fill in the interface name of pppoe-out 1 and the WAN interface name of static IP access.

If no bridge is used in the intranet, select the LAN port. When ROS opens UPNP, it automatically maps ports. All generated port mappings can be queried in IP "-"firewall "-"NAT.