Firewalls provide ____ services by examining packet headers and allowing traffic that conforms to estalished rules to continue.
A) packet filtering
B) NAT
C) application proxy
D) TCP/IP

Question

Quizplus · Accepted Answer

Firewalls primarily provide packet filtering services by examining packet headers and allowing traffic that conforms to established rules (such as source, destination addresses/ports, etc.) to continue. NAT (network address translation) is a separate function often performed by firewalls, but it is not the primary service they provide. Application proxy and TCP/IP are not services provided by firewalls.

Firewalls Provide ____ Services by Examining Packet Headers and Allowing