It is important to protect the BIOS of the system with a password so that attackers won't be able to use it to change security settings. You also need to disable the booting from external media devices (USB/CD/DVD). BIOS protection is only an authentication mechanism designed to prevent unauthorized physical access to BIOS. BIOS now comes with out-of-band access, meaning that, with the right hardware configuration, you have full remote access to your computer, no matter what state it is in.
BIOS protection
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