A 3478 port refers to a kind of Transmission Management Protocol (TCP) port particularly assigned to be used by STUN (Session Traversal Utilities for NAT) protocol. It acts as a communication channel for establishing connections between units traversing Community Tackle Translation (NAT) firewalls and routers in a community.
The 3478 port performs a vital function in facilitating communication in numerous functions, notably these involving real-time audio and video transmissions, resembling Voice over IP (VoIP) and video conferencing. By permitting units to speak instantly, it helps overcome the challenges posed by NAT, which may hinder direct connections between units on totally different networks.