Which of the following is the SIMPLEST type of firewall?

Which of the following is the SIMPLEST type of firewall?

A.
Stateful packet filtering firewall

B.
Packet filtering firewall

C.
Dual-homed host firewall

D.
Application gateway

Explanation:
Packet filtering was the first generation of firewalls and it is the most rudimentary type of all of the firewall
technologies.
Incorrect Answers:A: A stateful packet filtering firewall is more complicated compared to the Packet filtering firewall, since the
latter is stateless.
C: Dual-homed is a firewall architecture, not a firewall type.
A Dual-homed firewall refers to a device that has two interfaces: one facing the external network and the other
facing the internal network.
D: Application -level gateways are known as second generation firewalls, while packet filtering is a first
generation firewall

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 630