Not to beat a dead horse but this bothered me. Despite having the options you mentioned above, turned off, btsync still calls home. Kind of hard to tell what these are with so little documentation. Quite disturbing too is despite being flaunted as secure, this is quite far from it (unless I'm missing something). There is no way that header should be in any kind of heartbeat. 19:50:42.454545 IP 1.1.1.2.60575 > 1.1.1.1.domain: 32814+ A? r.usyncapp.com. (32) E..<>!@.@.p............5.(.-.............r.usyncapp.com..... 19:50:42.455412 IP 1.1.1.1.domain > 1.1.1.2.60575: 32814 2/4/3 A 67.215.231.242, A 67.215.229.106 (249) E.......@.N..........5....h1.............r.usyncapp.com.................C...............C..j.........#...ns-329 awsdns-41...........#...ns-607 awsdns-11.net..........#...ns-1467 awsdns-55.org..........#...ns-1725 awsdns-23.co.uk..k.......O....._.........O...............O...... 19:50:42.463096 IP 1.1.1.2.sos > 239.192.0.0.sos: UDP, length 89 E..u..@....y.............a.pBSYNC.d1:m4:ping4:peer20 19:50:42.463112 IP 1.1.1.2.55373 > 1.1.1.1.domain: 48569+ A? t.usyncapp.com. (32) E..<>)@.@.p..........M.5.(.-.............t.usyncapp.com..... // Peer heartbeats 19:50:42.463153 IP 1.1.1.2.44444 > 10.0.1.2.44444: UDP, length 76 E..h..@.@.iF............T..BSYNC.d1:m4:ping4:peer20:.. 19:50:42.463187 IP 1.1.1.2.44444 > 1.1.1.1.ddi-udp-1: UDP, length 76 E..h..@.@............."..T.YBSYNC.d1:m4:ping4:peer20:.. // Calling home again 19:50:42.463876 IP 1.1.1.1.domain > 1.1.1.2.55373: 48569 3/4/3 A 54.225.92.50, A 54.225.100.8, A 54.225.196.38 (265) E..%....@.N..........5.M.................t.usyncapp.com..............w..6.\2.........w..6.d..........w..6..&.........#...ns-607 awsdns-11.net..........#...ns-1467 awsdns-55.org..........#...ns-329 awsdns-41...........#...ns-1725 awsdns-23.co.uk..\.......O....._.~.......O...............O...... 19:50:42.464025 IP 1.1.1.2.51847 > 1.1.1.1.domain: 35375+ A? t.usyncapp.com. (32) E..<>*@.@.p............5.(.-./...........t.usyncapp.com..... 19:50:42.464463 IP 1.1.1.2.domain > 1.1.1.1.51847: 35375 3/4/3 A 54.225.196.38, A 54.225.92.50, A 54.225.100.8 (265) E..%....@.N..........5......./...........t.usyncapp.com..............w..6..&.........w..6.\2.........w..6.d..........#...ns-1467 awsdns-55.org..........#...ns-607 awsdns-11.net..........#...ns-1725 awsdns-23.co.uk..........#...ns-329 awsdns-41...........O....._.\.......O...............O...... 19:50:42.997548 IP 1.1.1.1.sos > 239.192.0.0.sos: UDP, length 89 E..u..@..................a..BSYNC.d1:m4:ping4:peer20:. 19:50:43.506494 IP 1.1.1.2.sos > 239.192.0.0.sos: UDP, length 89 E..u..@....y.............a.pBSYNC.d1:m4:ping4:peer20: 19:50:43.506556 IP 1.1.1.2 .44444 > 10.0.1.2.44444: UDP, length 76 E..h..@.@.iF............T..BSYNC.d1:m4:ping4:peer20:.. 19:50:43.506584 IP 1.1.1.2.44444 > 1.1.1.1.ddi-udp-1: UDP, length 76 E..h..@.@............."..T.YBSYNC.d1:m4:ping4:peer20:. 19:50:44.059042 IP 1.1.1.1.sos > 239.192.0.0.sos: UDP, length 89 E..u..@..................a..BSYNC.d1:m4:ping4:peer20:. 19:50:44.059183 IP 1.1.1.2.32367 > 1.1.1.2.44444: UDP, length 76 E..h..@.@...........~o...Tb_BSYNC.d1:m4:ping4:peer20:. 19:50:44.067887 IP 1.1.1.1.sos > 239.192.0.0.sos: UDP, length 89E..u..@....y.............a.pBSYNC.d1:m4:ping4:peer20:.. 19:50:44.067949 IP 1.1.1.2.44444 > 10.0.1.2.44444: UDP, length 76 E..h..@.@.iF.... Config:: { "device_name": "lt_vm1", "storage_path" : "/export/fas250/.sync", "check_for_updates" : false, "download_limit" : 0, "upload_limit" : 0, "webui" : { "listen" : "127.0.0.1:8888", "login" : "admin", "password" : "removed" } , "shared_folders" : [ { "use_relay_server" : false, "use_tracker" : false, "use_dht" : false, "search_lan" : true, "use_sync_trash" : true, "known_hosts" : [ "1.1.1.1:4444" "1.1.1.2:44444" "10.0.2.15:44444" ] } ] "lan_encrypt_data": true }
