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CheckPoint® CCSA™ NG 156-210 (CheckPoint Certified Security Administrator)

FireWall - Stateful Inspection


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Q1. Which of the following Firewall technologies is considered most secure and flexible?

A. Packet Filters

B. Stateful Inspection

C. Application Layer Gateways

D. Authentication Servers

Correct Answer: B


A firewall implemented with stateful inspection technology has several advantages over packet filter. As seen below, stateful inspection technology makes use of all communication information, communication derived state, application derived state, and also able to manipulate information.

                                                    Packet Filters                    Application Layer Gateway               Stateful Inspection
Communication Information                Partial usage                            Partial usage                                Yes
Communication Derived State                  No                                    Partial usage                                 Yes
Application Derived State                       No                                          Yes                                        Yes 
Information Manipulation                        No                                          Yes                                         Yes 

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