23 - Network Security

Question 1

Define Network Security

Answer 1

Applied to hardware and software to maintain the CIANA pillars

Hardware

• The machines, wiring, and other physical components of a computer system

Software

• The programs and other operating information used by a computer

Question 2

Define Defense in Depth

Answer 2

Seeks to delay rather than completely prevent the advance of an attacker

Layers of security, whether it is a physical layer or program

Question 3

What are the three key components for Architecture Security?

Answer 3

• Need for visibility
• Need to correlate
• Need for a remediation response

Question 4

What is a Firewall?

Answer 4

Application, device, or set of devices designed to permit or deny network transmissions based upon a set of criteria

Question 5

What is a Whitelist?

Answer 5

List of personnel who are authorized to access to a site or service

Question 6

What is a Blacklist?

Answer 6

List of personnel not allowed access to a site or service

Question 7

What is an Intrusion Detection System (IDS)?

Answer 7

System that monitors network traffic for suspicious or abnormal activity

Question 8

What is an Intrusion Protection System (IPS)?

Answer 8

Similar to an IDS, but responses to abnormal activity are preprogrammed and do not require human intervention.