Free port forwarding utility7/6/2023 Since 2002, most routers have UPnP capability. UPnP envisions a future where all devices are networkable and controllable over the network, such as light switches, thermostats, toasters, automobiles, etc. The idea is that a device can dynamically join a wired or wireless network, obtain an IP address, convey its capabilities, and learn about the presence and capabilities of other devices all over the network. UPnP extends this idea to the network: when a new network device is connected to the network, it can be automatically discovered over the network, and configured remotely from your machine over the network. For example, with ordinary plug-n-play, when a new peripheral is connected to your machine, it is automatically discovered and configured from your machine without access to the peripheral itself. Universal Plug-n-Play ("UPnP") is an attempt to extend the concept of ordinary plug-n-play, so that it applies to more than just your own machine: it applies to the whole network.
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