Which of the following network devices use ACLs to prevent unauthorized access into company systems?

Which of the following network devices use ACLs to prevent unauthorized access into company systems?
A . IDS
B . Firewall
C . Content filter
D . Load balancer

View Answer

Answer: B

Explanation:

A firewall is a system designed to prevent unauthorized access to or from a private network. Firewalls arefrequently used to prevent unauthorized Internet users from accessing privatenetworks connected to the Internet, especially intranets. Firewalls use ACLs (access control lists) to determine which traffic is allowed through the firewall. All traffic entering or leaving the intranet passes through the firewall, which examines each message and blocks or allows the message depending on rules specified in the ACL. The rules in the ACL specify which combinations of source IP address, destination address in IP port numbers are allowed.