Research Computing | How to Login to Lightning3

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This video will explain and demonstrate how to access the Lightning3 cluster from Apple Macintosh, Microsoft Windows, or Linux computers using the Secure Shell or ssh software. 

Lightning3 is only accessible from on-campus or via ISU’s Virtual Private Network

For access from off-campus, please review the video titled 'Research Computing Login Preparation' for the installation and use of the ISU VPN software will also be described.

SSH encrypts the entire login session, to protect your information while in transit to or from Lightning3.

To use command line ssh , First sys open a terminal window, In the terminal, issue ssh ISUNETID@lightning3.its.iastate.edu 

The first time that you connect, a Security message will appear stating that the server's host key is not in the cache. 

Type Yes (showing that you trust thise host), and this warning will never appear again.

Next, you will be prompted for your password. You will have been given an initial password in your welcome email, enter this the first time you login.

After correctly entering your password you are ready to use lightning3.

For MS Windows machines, the ssh client software named Putty is suggested.

We will now guide you through the process of accessing Lightning3 from MS Windows machines.

Once Putty is downloaded and installed: Click on the Putty icon to start it. 

For hostname, type lightning3.its.iastate.edu Ensure that the Port number is 22 (Ports are like telephone extension numbers, ssh typically uses port 22).

Next, ensure that the connection type button “SSH” is selected. You may want to type Lightning3 in the box named Saved Sessions and click on Save so that later you can open the connection quickly. 

Now click “Open” The first time that you connect, a security window will pop up stating that the server's host key is not in the cache. 

Select Yes, and this warning will never appear again. In the text window you will have a login prompt.

Enter your ISU NetID followed by the ENTER key.Next, you will be prompted for your password on Lightning3.

Type the password you are using on Lightning3 You have now have established a secure connection to use Lightning3.

Now you can:

Access the Lightning3 cluster from Apple Macintosh, Microsoft Windows, or Linux computers using the Secure Shell or ssh software  

Please contact us if you have any other questions:
For any of the University clusters email us at: hpc-help@iastate.edu o For other research servers email us at : researchit@iastate.edu