CISSP (Domain 10 - Physical (Environmental) Security) Flashcards
Crime Prevention Through Environment Design (CPTED)
LTCH
- Landscape (enhance view)
- Territory (visitor parking)
- Controlled Access Points (Walkways)
- Harden the target (Locks on Doors)
Physical Controls
- First line of defense
- Perimeter protection (terrain, fences)
Technical Controls
- Proximity devices
- IDS
Supporting Facility Controls
- Electrical Power
- Heating, ventalation
Different in 3 Fence Heights
- 3-4 feet: deters casual trespassers
- 6-7 feet: too high to climb easily
- 8 feet with 3 strands of barbed wire: deter determined intruder
Perimeter Intrusion Detection and Assessment System (PIDAS)
Detects if intruder goes under, through, or over a fence
Perimeter Wall
- Reinforced concrete or solid brick
- Not less than 10 feet
Lights for Boundary Protection
Lights should overlap in coverage at least 8 feet high
Monitoring with CCTV Requirements
- Detection
- Recognition
- Identification
CCTV Short Focal Length
Wider angel views
CCTV Long Focal Lenght
Narrower Views
3 Types of Proximity Devices
- User Activated: Wireless keypad
- Passive Systems: Powered by sensor
- System Sensing/RFID: Reader transmits signal and user device sends access code
Fail-soft Door
Door defaults to being unlocked
Fail-secure Door
Door defaults to being locked
Fail-safe Door
Door defaults to a stat that protects life
Security Guard Functions
- Deter and correct improper actions
- Crhecking credentials at entry points
- Ensuring company property does not leave the facility
- Verify doors and windows locked
9 Best Practices for Entry Controls
- Limit number of entrances to facility and computer rooms
- Doors should resits forced entry
- Screening device at every entrance
- Log entries and exits
- Watch for property leaving facility
- Secure all openings
- After unusual diversion, search facility
- After suspicious activity, review logs
- Do unscheduled inspections
Primary Power Source
- Provides day to day power
- Dedicated feeders from utility
Alternate Power Source
- Generator
- Backup supply when primary is down
In-line UPS
Constantly provides power from its inverter even when power line is functioning property
Standby UPS
Monitors power line and switches to battery power when problem deetected
Desirable Features of a UPS
- High MTBF Values
- Allow for automatic system shutdown
- Surge protection and line conditioning
- Long battery life
- EMI/RFI filters to prevent data errors
Electromagnetic Interference (EMI)
- Line noise
- Cause by lightning/electrical motors
Radio Frequency Interference (RFI)
- Line noise
- Fluorescent lighting, radio signals
Transient Noise
Disturbance imposed on a power line
2 Excess Power
SS
- Spike: Momentary high voltage
- Surge: Prolonged high voltage
2 Power Loss
FB
- Fault: Momentary power out
- Blackout: Prolonged loss of power
2 Power Degredation
SB
- Sag: Momentary low voltage
- Brownout: Prolonged power supply that is below normal voltage
4 Legs of a Fire
HFOC
- Heat
- Fuel
- Oxygen
- Chemical Reaction
5 Classes of Fires
- *Class A (Ash): Wood/paper
+Suppress: Water/soda acid - *Class B (Bottle): Liquid
+ Suppress: CO2, Argon, FM-200 - *Class C (Circuit): Electrical
+ Suppress: Halon, CO2, non-conductive - Class D (Death): Flammable
+ Suppress: Dry Powder - Class K (Kitchen): Kitchen
+ Suppress: Wet Chemicals
Ionization Smoke Detector
Reacts to charged particles of smoke (Early warning)
Thermal Detector
Alarm when there is a change in temperature
Photoelectric Smoke Detector
Alarms with source of light interrupted
Infrared Flame Detector
Reacts to emissions of flames
Protocol to stop the use of Halon
Montreal Protocol (1994), replaced with FM-200 and Inergen
Wet Pipes
- Always contain water
- Usually discharged at predefined temperature
- Pipes can freeze and break
Dry Pipes
- Water not in pipe
- Release after a delay
- Allows for shutdown before release
Pre-Action System - Water Pipes
- Combo of wet and dry pipe system
- Water released into pipe and link must melt before water is released
Duluge System
- Same as dry pipe but the sprinkler head is open
- Releases a lot of water fast
Piggybacking
They know someone is following them in
Tailgating
They dont know someone is following them in
