Internet Gateway Device Protocol
（重定向自Internet Gateway Device）
![Diagram of the UPnP's discovery phase](/Images/godic/202501/20/UPnP_discovery_phase4757.jpg")
Internet Gateway Device (IGD) Standardized Device Control Protocol is a protocol for mapping ports in network address translation (NAT) setups, supported by a certain number of NAT-enabled routers. It is a common communications protocol of automatically configuring port forwarding, and is part of an ISO/IEC Standard rather than an Internet Engineering Task Force standard.