A. Monitor website traffic
B. Block unwanted email
C. Protect against unauthorized access and threats
D. Increase internet speed
Submitted by: Zafar Ullah
A firewall is a security system designed to prevent unauthorized access into or out of a computer network. Firewalls are often used to make sure internet users without access are not able to interface with private networks, or intranets, connected to the internet.
The correct answer to the question: "What is the function of a firewall in computer networking?" is "Protect against unauthorized access and threats ".