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About two-factor authentication & Duo
One way to increase the security of computer systems is to use multiple factors for authentication. Typically, this will be two factors and follows the pattern of authenticating with a "knowledge" factor, which is something you know, like a password, and a "possession" factor, which is something that you have. The latter is typically a key or one time password often generated by a device. We have implemented a two factor authentication system for the HPC resources. The technology that has been chosen is called Duo from Duo Security. This is the same technology that was deployed for the University of Iowa Employee Self Service site.
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There is an ITS Two-Step Login with Duo Security | Information Technology Services page that has all of the information that you will need for using Duo. Please direct all questions regarding enrollment to the ITS Help Desk, whose contact information is listed on the above page.
Using Duo on the HPC system
Once you are enrolled in Duo you are ready to use it on the HPC system. Usage is fairly straight forward and is very similar to what you may be accustomed to with Web sites, such as the UIowa Employees Self Service site. All of the authentication methods of Duo are supported, however, given that the HPC systems are shell systems, the duo-push method is very convenient for automation.
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