![]() The major reason is that UPnP has a negative impact on the overall security of your home network. The program which requires the Port Forward must have support for UPnP Port Forward so that it can tell the OS about the Port Forwards it wantĪs you will see below, most devices come with UPnP disabled and you have to manually enable it.The computer OS must have UPnP Port Forward support and the function must be enabled in the computer OS. ![]() The router must have support for UPnP Port Forward, and it must be enabled in the router.There are a number of prerequisites for UPnP Port Forwards to work at all: For example if you boot up a game and the game tells the computer that it wants a couple of Port Forwards to function properly, the computer can then ask the router to perform those Port Forwards. Once the computers hear about that they can then automatically tell the router to perform any Port Forwards that they require. ![]() If you then boot up your Smart TV which is connected to the same network you could then use your Smart TV to browse those movies, pick one and start playing it on the TV over the LAN network.Īnother function of UPnP is that a router could announce to the LAN computers that it has the capability to do automatic Port Forwarding. For example, a computer which has a bunch of movies or lots of music stored on itself can announce that to other devices on the network. ![]() It is a standard for letting computers, routers and other devices that are connected to a network share information with each other about which services they are running and then automatically connect to those services when they need them. ![]()
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