Access your Mac anywhere
There are other ways of getting at a Mac’s desktop from another Mac, by making use of OS X’s File Sharing and Screen Sharing features. These can be enabled in the Sharing pane in System Preferences. Macs that are configured to use them appear in Finder’s sidebar, under the Shared heading. Select one there and click Connect As to access the Mac’s files and folders. Click Share Screen and then enter login credentials for the remote Mac to view its desktop in a window. Drag files in Finder to copy them between the two computers.
These options require the Macs to be on the same network, but you can also access a Mac over the internet. In System Preferences, choose which users should have access to Screen Sharing, then turn on Back to My Mac in the iCloud pane. In Finder’s Sidebar preferences, ensure Back to My Mac is checked. You should then be able to see the remote Mac in the sidebar and share its screen.