I have a MacBook connected to the Network + Internet via WiFi. I then share the network connection via a Patch Cable to an Ubuntu machine and I want to share the files on the Ubuntu OS. So may network looks like: Router - Subnet A MacBook Windows 1 Windows 2 etc.. MacBook - Subnet B Ubuntu So I want Windows N to be able to access SMB on the Ubuntu machine. However, I can't do this. Yet I can access Windows N from the Ubuntu machine. I can't put the Ubuntu machine straight into the router via ethernet as the router is located far away from my room.