An administrator needs to install a centrally located firewall that needs to block specific incoming and outgoing IP addresses, without denying legitimate return traffic. Which of the following firewall types should the administrator install?
A. A host- based firewall
B. A network-based firewall
C. A host-based stateful firewall
D. A stateless network-based firewall.
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A network-based firewall controls traffic going in and out of a network. It does this by filtering traffic based on firewall rules and allows only authorized traffic to pass through it. Most. organizations include at least one network-based firewall at the boundary between their internal network and the Internet, Answer is B
D is not the answer. The firewall needs to be stateful.
I think the answer is B. The firewall would need to state-ful to allow legitimate return traffic.