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FusionStorage V100R006C20 Block Storage Service Software Installation Guide 07

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Using PuTTY to Log In to a Node in Key Pair Authentication Mode

Using PuTTY to Log In to a Node in Key Pair Authentication Mode


After Secure Shell (SSH) security hardening is performed on nodes in the system, SSH-based password authentication is disabled for logins. In this case, use PuTTY and the required private key to log in to a target node.


  • Security hardening has been performed for SSH on the target node. Security hardening measures include:
    • SSH key pair authentication mode has been enabled and the public key certificate has been configured on the node.
    • SSH password authentication has been disabled.
  • You have obtained the private key certificate matching the public key certificate.


    1. Check whether PuTTY on the local PC has been used to log in to a node in key pair authentication mode.

      • If yes, go to 7.
      • If no or you cannot confirm, go to 2.

    2. Run PuTTY and enter the IP address of the target node and the SSH port number (default value: 22).
    3. In the Category area in the left pane, choose Connection > SSH > Auth.

      The SSH authentication configuration page is displayed.

    4. Click Browse, select the prepared private key certificate in the displayed window, and click Open.

      The file name extension of the private key certificate is *.ppk.

      The following figure shows the SSH authentication configuration page.
      Figure 9-1  Configuring the private key certificate

    5. In the Category area in the left pane, select Session.

      The main page is displayed.

    6. To facilitate subsequent access, create a custom session in Saved Sessions and click Save.

      The following figure shows the session configuration page.

      Figure 9-2  Saving a session

      After this step, go to 8.

    7. Select a saved session and click Load.
    8. Click Open.
    9. Enter the username for logging in to the target node as prompted.

      You are required to enter the certificate password if the in-use private key certificate is an encrypted certificate.

Updated: 2019-06-29

Document ID: EDOC1100016637

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