While there is currently no CAEN-provided VNC client available for Linux, as with Windows and macOS, individuals with Linux computers may use their local versions of ssh and vncviewer to connect.
First, type the following:
ssh -f -L 5951:localhost:5951 uniqname@login-course.engin.umich.edu "sleep 30"
where uniqname is your U-M uniqname. Then, you can connect to the local ssh-tunneled VNC port by typing:
vncviewer localhost:5951
See this knowledge base article for more information on connecting to the VNC servers via SSH.