It is possible to access other computers remotely over the Internet by using TeamViewer. TeamViewer is available for Windows, Mac and Linux on desktop, and for Android, iOS and BlackBerry on mobile platforms. The application is free for private use.
After launching the application, each computer receives a unique TeamViewer ID and a password. Control another computer remotely by entering its ID to the Partner ID field, selecting Remote Control, and clicking Connect to Partner. TeamViewer then requires the password of the target computer. Enter the password to access the computer.
By selecting Start TeamViewer with Windows on the target device, you can make it accessible at all times. The option is available under Unattended Access in the main TeamViewer window.