I want to restrict BTSync to only those devices connected to my LAN. I'm using a DHCP server, so designating predefined hosts doesn't help. When I de-select all of the general options except "Search LAN" BTSync works, but very very slowly (50 KB/s). When I enable "Use tracker server" I get solid performance (1 MB/s). 1. Is the tracker server an external host or is it confined to my network? 2. Is the DHT network restricted to my network, or does it look outside on the internet as well? 3. What is the best way to configure BTSync to only work on my LAN? Thanks.