The process of configuring a router, specifically when used in conjunction with a network service provider’s application, to permit external devices to connect to a specific device or service within a private network. This configuration enables devices outside of the local network to access applications or services running on devices behind the router. For example, a user might configure this setting to allow remote access to a security camera or a home server.
Implementing this network setting provides enhanced functionality for certain applications and services. It allows users to bypass network address translation (NAT) firewalls, enabling direct connections that may be necessary for online gaming, accessing media servers, or managing smart home devices remotely. Historically, setting up this configuration required navigating complex router interfaces, but some providers have streamlined the process through dedicated applications, simplifying the user experience.