UPnP (Universal Plug and Play) is a set of networking protocols that allows devices such as computers, printers, routers, and other networked devices to discover each other and establish functional network services automatically. This plug-and-play capability simplifies device setup and connectivity on local networks. However, UPnP can also introduce security vulnerabilities if not properly configured, as it may expose devices or open network ports to the internet without adequate authentication or authorization. Hackers often target UPnP to gain unauthorized access to home or business networks, making it important to monitor and secure UPnP-enabled devices.