1.2. Understanding Physical Security

You should implement security in many places, and one of the most overlooked areas is physical security. Physical security has nothing to do with software; rather, it covers how you protect your environment and systems by making sure that a person cannot physically access the system. For example, many companies use a numeric keypad to secure entrance to a facility. To get into the facility, users must enter a valid combination to open the door.

Another example of physical security is the server room. Most server room doors are locked with a numeric padlock or a key. Higher-security server rooms sometimes even require fingerprint or retinal scans from anyone trying to enter the room. The benefit of locking your servers in the server room is a hacker cannot boot off a bootable CD-ROM, which could bypass the OS entirely. After a hacker bypasses the OS, he typically can bypass a lot of the security by booting to a totally different OS.

You can apply enterprise security best practices to your home systems. For example, to help secure your home system, you might want to prevent booting from a CD-ROM so that an unauthorized person cannot try to bypass your Windows security.

1.2.1. BIOS settings

You can set a number of settings in your system BIOS to help control the security of the system. Be sure to investigate the BIOS settings on your system to ...

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