Ah, interesting! I changed the listening port on BitTorrent Sync, and I'm still getting attempts to contact various IP addresses. The folders don't have DHT enabled. The folder settings and BS's preference are attached. Question: I'm seeing lots of cases of BS trying to contact lots of seemingly random (DHT?) IP addresses. Is that a result of the DHT sites sending packets to BS on my machine, and BS trying to answer? Or is BS reaching out all on its own? In any case, it's still happening Thanks for your help!