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Significant changes to Puhti & Mahti authentication coming in April! Read about the SSH key and multi-factor authentication requirements.

Connecting to Puhti and Mahti web interfaces

Multi-factor authentication soon required to log in to Puhti and Mahti web interfaces

Starting 21 April 2025, the web interfaces of Puhti and Mahti will require multi-factor authentication (MFA). We strongly encourage all our users to test and activate multi-factor authentication as soon as possible to ensure uninterrupted access to the services.

  1. Test whether Haka MFA is already enabled for you.
    • If your home organization has enabled MFA for Haka login, you do not need to activate MFA separately for CSC services. It is highly preferred that you use the Haka MFA of your home organization if possible.
  2. If Haka MFA is not enabled or if your home organization does not offer Haka, activate CSC MFA following these instructions.
  1. Using a web browser, go to www.puhti.csc.fi or www.mahti.csc.fi.

  2. On the landing page, click on "Log in" and select an appropriate authentication provider.

    1. When logging in using your CSC user account, select CSC as the authentication provider and use the same username and password you use when connecting with ssh.

    Puhti web interface login page

  3. After successful authentication, you will see the dashboard.

    Puhti web interface front page

  4. From here, you can browse your files on the supercomputer, start a shell, view running jobs or start one of the many available applications. The dashboard also contains some important system information.