Question

Which of the following are true about firewalls?

• A. Filters network traffic
• B. Can be either a hardware or software device
• C. Follows a set of rules
• D. All the above

Answer 1

Answer: (D)

All the above

Firewalls are filters network traffic which follows a set of rules and can either be used as hardware or software device. They are often categorized as network or host-based firewalls. Network firewall filter traffic between two or more networks while host networks run on host computers. Firewall is a network security system designed to prevent unauthorized access to or from private network. Network firewalls are used to prevent unauthorized internet users from accessing the private network especially intranets.