87D-Link DIR-615+ User Manual
Section 4 - Conguration
Advanced
UPnP IGD
UPnP IGD (Universal Plug and Play Internet Gateway Device) is a protocol that 
allows ports to automatically be mapped between your devices behind your 
NAT and the Internet.
Enable: Toggle this switch to enable or disable UPnP. If it is enabled, a table 
will appear indicating active UPnP connections.
IPv4 IGD
Protocol: Indicates the protocol used by the UPnP connection.
IP: Indicates the internal IP used by the UPnP connection.
Private Port: Indicates the internal port used by the used by the UPnP connection.
Public port: Indicates the port exposed to the internet used by the UPnP 
connection.
Description: Indicates the description of the protocol used by the UPnP connection.