Thanks. I understand that it have a mesh type of syncing. However, I think I misunderstood what the FAQ explained about not sync via the Internet as below. Can I force Sync to do local network (LAN) syncing only and not sync via the Internet? Yes - simply disable the Relay, Tracker, and DHT options (these are per-folder settings). Sync will then no longer connect to any remote devices (outside your local network). So, disable these settings only prevent the approval from being discovered via Internet? Once approved, it will sync via Internet regardless of whether Relay, Tracker, and DHT options is enabled or disabled? Just to wanted to clarify how it works.