Internet UDP port 7777 is commonly used by Unreal Engine for its multiplayer games, such as Fortnite and Ark: Survival Evolved, to facilitate communication between the game server and the players' clients. Oracle's Cluster File System 2 (OCFS2) also uses this port for its cluster services. Additionally, it is used by iChat server for file transfer capabilities. However, it's important to note that this port can be configured for use by other applications as per the requirements.
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