# UPnP

The UPNP protocol is to establish a mapping relationship between the LAN and the WAN.
Please input the router IP address in the LAN.

* UPNP on/off ：Turn on or off the UPNP function of the device.
* Status: When the UPNP is offline, it shows as “Unknown”. When the UPNP works it shows “Success”
* Router LAN IP: It is the router IP in the LAN.
* WAN IP: It is the router IP in the WAN.
* Port Mapping list： The port mapping list
    here is the one to one relationship with the router’s port mapping setting.
* List
    * Service name：Defined by user.
    * Protocol： Protocol type
    * Internal port：Port that has been mapped in the router.
    * External port：Port that has been mapped locally.
* Default: UPNP default port setting is the HTTP, TCP and UDP of the NVR.
* Add to the list: Click it to add the mapping relationship.
* Delete: Click it to remove one mapping item.


When you are setting the router external port, please use 1024~5000 port.
Do not use well-known port 1~255 and the system port 256~1023 to avoid conflict.

For the TCP and UDP, please make sure the internal port and external port are the same
to guarantee the proper data transmission.

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