<http://wiki.centos.org/HowTos/VNC-Server> RE: 2.6.1 Testing with a java enabled browser My java enabled browser (Safari) cannot connect. RE: 2.6.2. Testing with a vnc client I have vnc client 'Chicken of the VNC' which can connect but only to display 0 and then the response back from the CentOS box is glacial. From My Mac workstation, I can see my CentOS GUI desktop and note that the on-screen pointer follows the Mac mouse quickly, albeit jerkily, but the view in my remote desktop viewer on my workstation takes 30-40 seconds to catch up with what happens on the CentOS box screen. I'm guessing it's a configuration issue. Meanwhile, Mac OS's built-in Remote Desktop client connects just fine and the response is good. RE: 3. VNC encrypted through an ssh tunnel I have added the -localhost option to the VNCSERVERARGS in /etc/sysconfig/vncservers. I cannot test the vncviewer as stated because it requires a viewer to use "vncviewer -via name@[IP_Address] localhost:1" and neither viewer that I have has anywhere to enter "-via" or "localhost:1". When I connect using Apple's built-in screen sharing, I am warned: The computer "Warren's Remote Desktop" is running a VNC server that does not support Screen Sharing keystroke encryption. Do you want to continue connecting anyway? This sounds like encryption is not in fact being used. Aside from adding the -localhost option to the VNCSERVERARGS in /etc/sysconfig/vncservers and restarting the vnc server, is anything else required to get ssh tunneling working?