Question

What is the purpose of a firewall in network security?

Answer 1

Firewalls protect your network from unauthorized access by hackers who use a variety of tools to gain entry such as viruses, backdoors, denial-of-service (DoS) attacks, macros, remote logins, phishing emails, social engineering, and spam.

Step-by-step explanation:

Answer 2

Creates a border between an external network and the guarded network where the firewall inspects all packets (pieces of data for internet transfer) entering and leaving the guarded network.

Step-by-step explanation: