A researcher is comparing the differences between a stateless firewall and a proxy firewall. Which two additional layers of the OSI model are inspected by a proxy firewall? (Choose two.)
- Layer 3
- Layer 4
- Layer 5
- Layer 6
- Layer 7
Explanation: Packet filtering firewalls are usually part of a router firewall, which permits or denies traffic based on Layer 3 and Layer 4 information. They are stateless firewalls that use a simple policy table look-up that filters traffic based on specific criteria.
More Questions: Network Security ( Version 1) – Network Security 1.0 Final Exam