Thanks GreatMarko, I looked at my btsync.conf file and when I tried to change the the listen setting, that seemed to affect the web interface, and not the application listening port itself. So I had to add the line in the first section (in red) for "listening_port" : xxxxx, with no quotes around the port number. I also changed the use_upnp setting to false not sure if that would cause the port to randomly change. { "check_for_updates" : true, "display_new_version": false, "use_upnp" : false, "listening_port" : xxxxx, "webui" : { "listen" : "0.0.0.0:14859", "allow_empty_password" : false, "directory_root" : "/share" }}