So, I'm toying around with btsync as it seems to be a good solution for syncing multiple computers. But I have troubles syncing on my work desktop who is behind a gateway+firewall. Here is my setting : * home desktop: debian jessie (testing), behind my ISP box (via ethernet) serving as DHCP/router, probably using NAT. Probably no fix IP address. Usually off when I'm not at home. * home laptop: debian jessie, wifi to the box, on my home LAN. * work desktop: debian wheezy (stable), behind a gateway/firewall/router. Probably using NAT. The router certainly has a fix IP. Always on. I have root