WGU C172 - Network and Security Foundations - Firewalls Exam Questions And Answers Already Graded A+

Firewall - A part of a computer system or network designed to block unauthorized access while permitting outward communication. Stateful Inspection Firewall - The inbound and outbound data packets are compared to determine if a connection should be allowed. Proxy Server - The client gets access to the network via the ____________________________. This step is used to authenticate the user, establish the session, and set policies. Packet Filtering Firewall - Can also limit information moving from one segment to another. Packet Filtering Firewall - Explicit ports must be opened to allow incoming and outgoing traffic. Stateful Inspection Firewall - A _____________________________ type of Firewall operates at OSI Layers 3 (Network), 4 (Transport), 5 (Session). Firewall - ________________ rules are called Access Control Lists (ACLs). Application Level Firewall - The ________________________________ Firewall operates at OSI Level 7 and below. Access Control Lists (ACLs) - allow or disallow traffic based on tuples (groups of variables like Source IP, Dest IP, Port Number, time, etc) Application Level Firewall - Sometimes known as a proxy firewall.Packet Filtering Firewall - A limit is placed on the packets that can enter the network. Compares traffic against pre-established criteria.