Disabling Secure Boot

This section explains how to disable Secure Boot on SNS firewalls.

The images below show BIOS on SN-S-Series model firewalls. As such, the display may vary depending on the model used, but the process remains the same.

  1. Connect the computer to the SNS firewall using an appropriate cable, and log in with your terminal emulator in console mode;

    - or -

    Connect a USB keyboard and a monitor to the SNS firewall using an appropriate cable.

  2. In the console, authenticate by using the admin account on the SNS firewall system.

  3. Run this command to restart the SNS firewall:

    reboot

  4. Once the SNS firewall starts up, press [Del] several times to stop its startup sequence, and access BIOS.

  5. In the Security tab, select Secure Boot and press [Enter].

  6. Disable the Secure Boot setting by selecting Disabled. If this status was already selected, this means that Secure Boot has already been disabled.

    Image showing Secure Boot being disabled in BIOS on an SNS firewall

  7. Press [Esc] to go back to the previous window.

  8. In the Save & Exit tab, select Save Changes and Reset and press [Enter].

  9. In the Save & Reset window, select Yes and press [Enter].