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LAN Properties enhances the vanilla "Open to LAN" interface to provide full control over all server settings, just like in server.properties on a dedicated server.
LAN Properties is a mod that gives you access to all server.properties settings when opening your world to LAN, just like on a dedicated server.
Simply install the mod and click "Open to LAN" as normal. There will be a configuration button that lets you customize all server settings.
LAN Properties introduces an additional property called hybrid-mode.
When online-mode is disabled but hybrid-mode is enabled, the server attempts to authenticate players in a "best of both worlds" approach:
This ensures that premium (online) players always keep their correct UUID, while still allowing offline players to join when needed.