Firewall types and placement in Cybersecurity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a firewall in cybersecurity?

A firewall is a security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules to protect a network from unauthorized access.

beginner

Name two common types of firewalls.

Two common types of firewalls are:<br>1. Network-based firewall - protects entire networks.<br>2. Host-based firewall - protects individual devices or computers.

beginner

Where is a perimeter firewall typically placed?

A perimeter firewall is placed at the boundary between an internal trusted network and an external untrusted network, such as the internet, to filter traffic entering or leaving the network.

intermediate

What is the role of an internal firewall?

An internal firewall is placed inside a network to segment and protect different parts of the network from each other, limiting access and reducing the spread of threats within the network.

intermediate

Explain the difference between a hardware firewall and a software firewall.

A hardware firewall is a physical device that filters traffic between networks, often used at network boundaries. A software firewall is installed on individual devices to monitor and control traffic to and from that device.

Where is a perimeter firewall usually placed?

A Between the internal network and the internet

B Inside a single computer

C Between two internal departments only

D On a mobile device only

A perimeter firewall is placed at the boundary between the internal network and the internet to control traffic entering or leaving.

Which type of firewall protects individual devices?

A Cloud firewall

B Network-based firewall

C Perimeter firewall

D Host-based firewall

Host-based firewalls are installed on individual devices to protect them specifically.

What is the main purpose of an internal firewall?

A To speed up internet access

B To protect the network from the internet

C To segment and protect parts of the internal network

D To replace antivirus software

Internal firewalls segment the internal network to limit access and reduce threat spread.

Which of the following is a hardware firewall?

A A physical device placed between networks

B A software program on a laptop

C An antivirus application

D A cloud storage service

Hardware firewalls are physical devices that filter traffic between networks.

Firewalls primarily control traffic based on what?

A User preferences

B Security rules

C Internet speed

D Device battery level

Firewalls use security rules to allow or block network traffic.

Describe the main types of firewalls and where they are typically placed in a network.

Think about protecting the whole network versus individual devices and the boundary between inside and outside networks.

Explain why internal firewalls are important even if a perimeter firewall is in place.

Consider what happens if a threat gets past the perimeter firewall.