Perform an Offline Feed Update

Required User Role: Administrator

Note: If you already performed a Nessus offline plugin update, start at step 7.

Before you begin:

  • If you installed in an environment other than Tenable Core, install a temporary Nessus scanner on the same host as You will use this temporary Nessus scanner to generate a challenge code for offline registration. Do not start or otherwise configure the temporary Nessus scanner.

To perform an offline feed update:

  1. In the command line interface (CLI), run the following command to prevent the Nessus scanner from starting automatically upon restarting the system:

    /usr/bin/systemctl disable nessusd

  2. To obtain the challenge code for an offline registration, do one of the following:

    • If you deployed + Tenable Core, navigate to the tab in Tenable Core and save the challenge code.

    • If you installed in an environment other than Tenable Core, run the following command and save the challenge code:

      # /opt/nessus/sbin/nessuscli fetch --challenge

  3. In your browser, navigate to
  4. Paste the challenge code from Step 2 and your Activation Code in the appropriate boxes on the web page.
  5. Click Submit.
  6. On the next page, copy the link that starts with and save it as a favorite.
  7. Within the saved link change all-2.0.tar.gz to SecurityCenterFeed48.tar.gz. This link is needed for future use.

    Caution: Do not click the link for nessus-fetch.rc as it is not needed.

  8. Go to the favorite link you created.

    The page prompts you to download a file.

  9. Download the file, which will be called SecurityCenterFeed48.tar.gz.
  10. Verify the file using the MD5 checksum, as described in the knowledge base article.

  11. Save the SecurityCenterFeed48.tar.gz on the system used to access your GUI.
  12. Log in to via the user interface.

  13. Click System > Configuration.

    The Configuration page appears.

  14. Click Plugins/Feed.

    The Plugins/Feed Configuration page appears.

  15. In the Schedules section, expand the Feed options.
  16. Click Choose File and browse to the saved SecurityCenterFeed48.tar.gz file.
  17. Click Submit.

    After several minutes, the plugin update finishes and the page updates the Last Updated date and time.

What to do next:

  • If you installed a temporary Nessus scanner on the same host as, uninstall the Nessus scanner.