When a Plex application reports an inability to establish a direct link to the Plex Media Server, a relayed pathway is utilized. This occurs when the app and server are on different networks and direct port communication is hindered by firewalls, network configurations, or other routing limitations. As an illustration, if a user attempts to stream content from their home Plex server while on a public Wi-Fi network and a direct connection is impossible, the data stream is routed through Plex’s relay servers.
This alternative connection method enables access to media libraries from virtually anywhere, circumventing network restrictions that would otherwise prevent remote streaming. Historically, setting up remote access involved complex port forwarding configurations. The relay service simplifies this process significantly, making Plex more accessible to users with limited networking knowledge. Furthermore, it provides a fallback option when direct connections fail intermittently due to temporary network disruptions.