Harold Thanks for replying so quickly, and good news to all those answers! I have tested a sync on a LAN and one "just finds" the other, which is very neat. However, in a WAN scenario, how can I "fix" the IP addresses without the need for relays, DHT, etc or DO I have to use those things? I guess what I am trying to ask is can I set up the config so that it automatically "knows" which IP address to try? A bit like setting up a VPN where you know which end is where. :-) Paully