Report Will Btsync Work When Filesharing Protocols/ports Are Blocked? in Sync General Discussion Posted January 27, 2016 Well that completely depends on what exactly is blocked in your network. :-) If you're facing a restrictive firewall that does layer 7 packet inspection then BitTorrent Sync could definitely not work. My student housing is behind such a firewall and there I can only sync with my servers via OpenVPN. Just try it out.