Internet, Wi-Fi and phone
UPnP
Abbreviation for Universal Plug and Play
In short and in plain language
UPnP is a handy feature for your home network.
It lets devices find each other. They can also change settings on the router.
Devices can then open ways to the internet without asking.
You can switch the feature off in the router settings.
Definition
UPnP is a convenience feature that lets home network devices find each other and change router settings. Devices can open access to the internet without asking. The feature can be switched off in the router settings.