It is quite possible that access by remote workers will work out of the box. If not check your firewall settings - see some general tips here: http://help.getsync.com/customer/en/portal/articles/1902445-peers-aren-t-connecting?b_id=3895 I personally use a Synology device to do just that and it works fine. Drobo should also do fine, but I don't have first hand experience with it.