Section: Defining Network Infrastructures and Network Security
Explanation
Explanation/Reference:
Section Reference: Defining Firewalls and Other Perimeter Security Devices
Explanation: A circuit-level gateway works at the Session layer of the OSI model when a TCP or UDP
connection is established. When the connection is made, packets can flow between hosts without further
checking. Circuit-level gateways hide information about the private network, but they do not filter individual
packets.
QUESTION 10
What type of firewall do you use to block access to certain websites or instant messengers?