Physical Security - CompTIA SY0-701 Security+ - 1.2.6

Barricades/Bollards

• Prevent access

- There are limits to the prevention

• Channel people through a specific access point

- And keep out other things

- Allow people, prevent cars and trucks

• Identify safety concerns

- And prevent injuries

• Can be used to an extreme

- Concrete barriers / bollards

- Moats

Access control vestibules

All doors normally unlocked

- opening one door causes others to lock

All doors normally locked

- unlocking one door prevents others from being unlocked

One door open / other locked

- when one is open, the other cannot be unlocked

One at a time, controlled groups

- Managed control through an area

Fencing

Build a perimeter

- Usually very obvious

- May not be what you're looking for

Transparent or opaque

- See through the fence (or not)

• Robust

- Difficult to cut the fence

Prevent climbing

- Razor wire

- Build it high

video surveillance

CCTV (Closed circuit television)

- Can replace physical guards

Camera properties are important

- Motion recognition can alarm and alert when somethings moving

- Object detection can identify license plate or person's face

Often many different cameras

- Networked together and recorded over time

Security guards

Guards prevent and deter many attacks. For example, guards can prevent unauthorized access into secure areas of a building by first verifying user identities.

Two-person integrity/control

When two people are guarding a secure area, in case one is occupied with something else.

Access badge

A security card that identifies a person by name and perhaps includes a photo, title, and other information.

Lighting

More lights mean more security

- Attackers avoid the light

- Easier when lit

-Non IR cameras can see better

Specialized design

- Consider overall light levels

- Lighting angles may be important

--important for facial recognition

- Avoid shadows and glare

Infrared sensors

Can detect motion in both light and dark.

Pressure sensor

detects a change in force , usually found in floor and windows

Microwave sensors

detects movement across large areas

Ultrasonic sensors

An Ultrasonic sensor is a device that can measure the distance to an object by using sound waves.

detects motion, collision detection, etc