I used to have OS X Server running at work, but trying to connect to its VPN server from home seemed quite unreliable. I eventually learned that Back to My Mac interfered with the VPN ports. Still, when BTMM was off, the VPN server was hit and miss. So now I use Screens to screen share from home to work, and no longer have OS X Server at work. 1. I would like to continue to use Screens to connect to one of the work computers from home. 2. I would also like to access file sharing on that same computer like BTMM had. 3. And lastly, I would like to be able to access my work network from home to be able to see other services available at work. What are some options to do these things without BTMM or OS X Server?