Screensharing

Screen Sharing for Mac OS X

The following directions are for enabling and using Mac OS X Screen Sharing for on-campus and off-campus remote access.  Mac OS X's Screen Sharing uses the VNC protocol.

To use Screen Sharing from off-campus to connect to an on-campus computer, you must first login to the SSL VPN .

To use Screen Sharing to connect to your office computer, your office computer must stay powered on, not in sleep or hibernation modes, and logged into Cisco NAC. You may put the display to sleep.

The Cisco NAC Agent automatically logs the computer off the network if it has been connected to the network continuously for 7 days. If you are going to be away from your office for more than 7 days and need to use Screen Sharing, another staff member will need to login to you computer and then login to the Cisco NAC Agent for you. You can do this by creating another account on your computer for them.


Enabling Screen Sharing on your office Mac OS X computer.

For Mac OS X 10.4 computers:

  • Go to Apple > System Preferences , From there go to the Sharing preference.
  • Turn on Apple Remote Desktop by clicking in the checkbox next to it and click Start .
  • Click Access Privileges , select only your name, make sure Observe , and Control are checked off, check off VNC viewers may control screen with a password : and enter a password you want to use to connect to this computer. Press OK .
  • Keep the System Preferences window open, click Show All , and click the Network preference.
  • In the Network preference, in the Show field, select your network connection (Ethernet or Airport), and click on the TCP/IP tab. You should see an IP address that starts with 149.130. Write this address down. You will need this address to connect to your computer when you are at home. This IP address may change from time to time, so you should check it when you leave your office to make sure you have the current IP address for your office computer.
  • You may now go to the System Preferences menubar and select Quit . Your computer is now ready to accept remote desktop request

For Mac OS X 10.5 & 10.6 computers:

  • You must first configure your Mac OS X computer to accept remote desktop connections. Click on Apple > System Preferences , From there go to the sharing preference.
  • Turn on Screen Sharing by checking the checkbox next to Screen Sharing .
  • In the Allow access for: section, click Only these users , and then press the + sign.
  • In the following window, choose only your user name and press Select . You will be asked to enter your OS X login name and password to continue.
  • Click on Computer Settings... , and check off VNC viewers may control screen with password, and enter a password you want to use to be able to connect to this computer, press OK . You will be asked to enter your OS X login name and password to continue.
  • In the System Preferences window, click Show All , then click the Network preference.
  • In the Network preference, click on the network connection in the left pane that has a green circle next to it (Ethernet or Airport).
  • In the right pane, you should see an IP address that starts with 149.130. Write this address down. You will need this address to connect to your computer when you are at home. This IP address may change from time to time.
  • You may now go to the System Preferences menubar and select Quit . Your computer is now ready to accept remote desktop request

Connecting to your office Mac OS X computer using Screen Sharing from a Mac OS X computer.

  • In Finder, Go > Connect to Server....
  • In the window that appears, type in vnc:// and the IP address of your computer. Press Connect
  • Enter your username and password to log into your office computer and press Connect
  • You should at this point be connected to your Mac in your office. When you are finished, go to Screen Sharing > Quit Screen Sharing.

Connecting to your office Mac OS X computer using TightVNC from a Windows computer.

Screen Sharing on Mac OS X is done using a system called VNC.  Mac OS X comes with VNC built in, but to use this on a Windows computer you need to install a VNC program.  The directions below will show you how to install and use a freeware programs called TightVNC on your Windows computer and then use it to connect to your Mac OS X office computer.

  • To install a Screen Sharing VNC client on your home Windows computer, please visit TightVNC's website at http://www.tightvnc.com/ and download their free Windows installer.
  • When you launch the installer, click Next through the Welcome, Information, and Destination Location windows.
  • At the Select Component window, be sure to uncheck the TightVNC Server option, then click Next.
  • Click Next in the Start Menu Folder and Additional tasks windows.
  • Click Install in the Ready to Install window.
  • When the install is complete, click Finish.

Now that the Screen Sharing VNC client has been installed, follow these directions to login to your office Mac.

  1. Login to the VPN Client per the directions above.
  2. Launch TightVNC through Start > All Programs > TightVNC, select TightVNC Viewer .
  3. In the VNC Viewer window, in the VNC Server field, type in your computer's IP address, and press return or click Connect .
  4. If you receive a Windows Firewall popup, click Unblock .
  5. To close the Screen Sharing connection, click the red X in the TightVNC menu bar.

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