![]() ![]() It becomes exposed to public traffic on the mapped port and that is a security concern. Once the application maps a port, it can be contacted from the public Internet as though it is running on the router. ![]() In doing so, get one if the requested port is available on the router. Nowadays, using UPnP or similar protocols, applications can request a port mapping from the router. There was only static port mapping which was usually configured in the router’s configuration interface. It is an acronym for Universal Plug and Play (although it serves a much greater purpose than mere port mapping).īefore there was something like UPnP, applications could not request a port mapping and get one assigned dynamically. The most widespread protocol used for port mapping is UPnP. In truth, only some of them caught traction of creating a dynamic and on-demand port mapping. In it’s simplified form, it is a method of sending router’s incoming traffic to a client behind a shared IP. Port mapping and port forwarding are synonyms.
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