Billion Electric Co. Ltd. BIL-7401VGPR4 ユーザーズマニュアル

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This section lists all current NAT sessions between interface of types external (WAN) and internal
(LAN).

The section lists all port-mapping established using UPnP (Universal Plug and Play. See Advanced
section of this manual for more details on UPnP and the router’s UPnP configuration options.