CAEN Knowledge Base
CAEN Knowledge Base

How do I connect to the Linux Login Service using the CAEN VNC client?

Eligible CAEN Account holders have remote access to the CAEN Lab Software Environment (CLSE) for Linux via Virtual Network Computing (VNC). The CAEN-configured VNC client uses the graphical desktop sharing system, tunneled though SSH, to connect to the CAEN Linux Login Service and simulate the Linux environment in computer labs. The login servers are for interactive use only, and should not be used for CPU-intensive and/or background work. Refer to the policy on Appropriate Use of the Linux Login Service.


Using the VNC Client on CAEN Lab Computers

On CAEN lab computers running Microsoft Windows, the VNC client is available to launch from the Cloudpagng website.


Downloading the VNC Client for Personal Computers

The CAEN VNC client is supported for the following operating systems:


On Campus - Connecting with the CAEN VNC Client

For Windows operating systems, extract then double-click the downloaded caenvnc.exe file. For Mac OS, double-click the downloaded caenvnc4.1.dmg file, then double-click the icon in the resulting window. A login window similar to the following will appear:

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From the Hostname drop-down menu, select Enter your U-M uniqname as the Username, enter your UMICH password. Before clicking the Connect button, you can also select the size of the client window (the default Large option will use 90% of the screen).

Note: You may receive a message similar to what is displayed below. You can disregard this warning, as all network traffic will be encrypted using an SSH connection:

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By default, the VNC client will establish a full-screen connection to the CAEN Linux environment. If you would prefer your connection to open in a window instead of full-screen, select a lower resolution from the Resolution drop-down menu before clicking the Connect button. Once you do connect, you should see a typical CAEN Linux login screen, similar to the following:

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Again, enter your U-M uniqname as the Username in this screen, then click Log In. You will be prompted to enter your UMICH password again, then click Log In. Once the login process completes, your CAEN Linux desktop should appear.


Off Campus - Using Duo Two-Factor Authentication

Off-campus access to the CAEN Linux Login Service requires the use of Duo two-factor authentication (2FA). All that is needed is to enroll a device. Once your device is enrolled in Duo, you can connect to the Linux Login Service with the CAEN VNC client from off-campus using the following host:

If you already have a Duo code from SMS message or security token, you can enter it into the Duo Choice field. Otherwise, leaving the field set to 1 will tell Duo to send a new code to your first enrolled device.

Upon clicking the Connect button, you will then be provided with the typical CAEN Linux login screen for the VNC server.