Physical Security

By: Christian Hudson

Overview

Definition and importance Components Layers Physical Security Briefs Zones Implementation

Definition

Physical security is the protection of personnel, hardware, programs, networks, and data from physical circumstances and events that could cause serious losses or damage to an enterprise, agency, or institution. This includes protection from fire, theft, vandalism, natural disasters, and terrorism.

Is physical security important?

Significance is underestimated Breaches in action require no technical

background Accidents and natural disasters are

inevitable so preparation is necessary

Components

Accidental and environmental disasters Placing obstacles Idea is to confuse attacker,

delay serious ones, and attempt to avoid the inevitable

Monitoring and notification systems Security mechanisms to

monitor and detect potential harm or violations

Alarms, security lighting, security guards or closed-circuit television cameras (CCTV)

Components (cont.)

Recovery mechanisms To repel, catch or frustrate attackers

when an attack is detected Intrusion handling

Layers

Environment Design First layer of physical

protection Consists of external

design void off intruders

May include objects like barbed wire, warning signs, fencing, metal barriers, and site lighting

Layers (cont.)

Mechanical and electronic access control Prevents intruders

or unauthorized users to direct access to physical components

Includes gates, doors and locks

Layers (cont.)

Layers (cont.)

Monitoring system Less of a

preventative measure

Used more for incident verification and analysis

Most common mechanism is CCTVs

Layers (cont.)

Intrusion Detection Monitors for attacks Less of a preventative measure More of an response mechanism Alarms/Notification

Physical Security Briefs

Security site brief Security policies used for the framework of

preventing the access to a physical setting

Security design brief Security policies used for the layout or design for

a physical entity (may be coding, layout for servers, access control, etc)

Zoning

Public Zone Public has access to this area of a facility and its

surrounding Examples are facility grounds, elevator lobbies,

etc Reception Zone

Zone which entail the transition from a public zone to a restricted-access area of control

Typically means where the contact of visitors and a department is initiated

Zones (cont.)

Operations Zone An area where access is limited to personnel

who work at facility and to escorted visitors Production floors and open office areas

Security Zone An area to which access is limited to authorized

personnel and to authorized and escorted visitors

Area where secret information is processed/stored

Layers (cont.)

High Security Zone An area where access is limited to

authorized, appropriately screened personnel and authorized and properly escorted visitors

A general example would be an area where high-value assets are handled by selected personnel

Implementation

State the plan’s purpose Define the areas, buildings, and other

structures considered critical and establish priorities for their protection

Define and establish restrictions on access and movement of critical areas Categorize restrictions

Questions?

References and Resources

Bishop, Matt. Introduction to Computer Security. Massachusetts: Pearson Education, Inc., 2005.

http://64.233.167.104/search?q=cache:0xtkul7lJOgJ:www.tess-llc.com/Physical%2520Security%2520PolicyV4.pdf+physical+security+policy&hl=en&ct=clnk&cd=1&gl=us

http://en.wikipedia.org/wiki/Physical_Security http://www.rcmp-grc.gc.ca/tsb/pubs/phys_sec/g1-026_e.pdf http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci11

50976,00.html http://tldp.org/HOWTO/Security-HOWTO/physical-security.htm

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