Connecting a Mac to a VNC Session First you need to start a VNC session, on one of the department linux machines for instance. See ~info/vnc.txt for more information. To connect to the vncserver session, enter the following command, which sets up a secure tunnel for the session port: ssh -L 5901:localhost:5901 server where server is the machine on which your vncserver session is running, and 5901 is the port associated with the session. Then, do this: Finder -> Go -> Connect to Server Enter Server Address: vnc://localhost:5901 and Connect.