Internet TCP port 4567 is commonly used by TR-069 protocol, which is a technical specification for remote management of end-user devices by Auto Configuration Servers (ACS). Notably, it is used by various Internet Service Providers (ISPs) such as Verizon for their FiOS service. This port is also used by the Universal Plug and Play (UPnP) protocol for device discovery and control. However, it's important to note that the usage of this port can vary depending on the specific software or system configuration.
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