Which Protection Answers It?

About this interactive

Most of what threatens network equipment is not a person breaking in; it is anything that takes the equipment offline, which makes it an availability problem. Hardware threats: a device is dropped or hit, or flooded, which is why equipment sits up off the floor. Environmental threats: humidity out of range, temperature too hot or too cold, temperature that swings up and down (equipment wants it steady), and fire. Electrical threats: a blackout (no power at all), a surge or spike (a sudden jump in voltage, often when power comes back after an outage), a brownout (the voltage drops below normal, so equipment may misbehave or drop offline), and noise on the line (an unclean power wave that troubles communication equipment). The five protections: - Access control: a controlled room, and only the people who need it can get in. - Asset tracking: an inventory of what you own, with barcodes or QR codes scanned at audits and checkpoints, RFID tags read automatically as they pass, or GPS. - Monitoring and alerting: SNMP, event logs and a syslog server, temperature and moisture sensors, a dashboard that aggregates the logs, alerts by email or text, or a network operations center (NOC) with people watching. - Environmental controls: the right fire suppression system for the room, an HVAC system sized for the room so it holds the temperature steady, and power redundancy. A UPS (uninterruptible power supply) runs on batteries through short outages and, in the kinds that condition power, smooths out noise and low voltage; a backup generator covers outages longer than the batteries last. (The video calls it an "uninterrupted" power supply; the name is uninterruptible.) - Asset disposal: even a device with no hard drive holds its configuration, which tells an attacker how your network is built. Factory reset or sanitize it, crush it, or use a disposal company that certifies the destruction.

What you'll learn

Choose the physical protection that answers a given hardware, environmental or electrical threat: access control, asset tracking, monitoring and alerting, environmental controls, or asset disposal
Explain what each protection does for network equipment, including what a UPS and a generator each cover and why configurations must be wiped before disposal

Aligned to

ISC2 CC

1.4 Understand cybersecurity controls

NIST 800-53

PE-3 Physical Access Control

PE-11 Emergency Power

MP-6 Media Sanitization

CompTIA Network+

2.4 Explain important factors of physical installations.

CompTIA Security+

1.1 Compare and contrast various types of security controls.

NIST CSF

PR.IR-02 The organization's technology assets are protected from environmental threats.

CompTIA A+ Core 2

2.8 Given a scenario, use common data destruction and disposal methods.

Key terms

Physical Security: The use of tangible controls — such as locks, barriers, surveillance cameras, and access badges — to protect facilities, hardware, and infrastructure from unauthorized physical access, theft, or damage.
Access Control: A security mechanism that restricts access to resources based on policies, roles, or identity.
Inventory Management: The process of tracking and recording organizational assets to ensure accountability and detect loss or theft.
Radio Frequency Identification: Radio Frequency Identification uses electromagnetic fields to automatically identify and track tags attached to objects or embedded in access cards; in physical security, RFID cloning and eavesdropping attacks can allow unauthorized facility access.
Simple Network Management Protocol: A protocol used to monitor and manage network devices such as routers, switches, and servers.
Log Aggregation: The process of collecting and centralizing log data from multiple systems and devices into a single location for unified analysis and monitoring.
Network Operations Center: A centralized facility from which IT professionals monitor, manage, and maintain an organization's network infrastructure around the clock. NOC teams respond to alerts, troubleshoot outages, and coordinate incident response to ensure network availability and performance.
Environmental Controls: Physical safeguards such as HVAC, fire suppression, and humidity regulation used to protect network equipment from environmental damage.
Uninterruptible Power Supply: A battery-backed power device that provides continuous power to connected equipment during utility power outages or voltage fluctuations, allowing safe shutdown or continued operation. UPS units are essential for servers and critical infrastructure to prevent data loss.
Backup Generator: A fuel-powered electrical generator that activates during a utility power outage to supply sustained power to critical systems.
Blackout: A complete loss of electrical power to a facility or area, causing all connected equipment to lose power.
Brownout: A reduction in electrical voltage or power supply that can cause equipment to malfunction or shut down.
Asset Disposal: The process of securely decommissioning and discarding equipment, including wiping configurations and sanitizing devices to prevent data exposure.
Data Sanitization: The process of permanently and securely removing or destroying data from a storage device before disposal or reuse.

Topics

Physical Security Environmental Controls Asset Disposal Interactive Categorize

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