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Exam Code: GCFW

Exam Name: GIAC Certified Firewall Analyst

Updated: Sep 09, 2026

Number: 391 Q&As with Testing Engine

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GIAC GCFW Exam Syllabus Topics:
SectionObjectives
Network Security Fundamentals- TCP/IP and network protocol analysis
  • 1. Network addressing and subnetting concepts
    • 2. Packet structure and traffic flow
      - Security principles
      • 1. CIA triad and risk concepts
        • 2. Threat modeling basics
          Firewall Technologies- Firewall types and architectures
          • 1. Stateful inspection firewalls
            • 2. Packet-filtering firewalls
              • 3. Application-layer firewalls
                - Firewall configuration and rule management
                • 1. Access control lists (ACLs)
                  • 2. Policy design and rule optimization
                    Intrusion Detection and Prevention- IDS/IPS concepts
                    • 1. Anomaly-based detection
                      • 2. Signature-based detection
                        - Traffic monitoring and analysis
                        • 1. Log analysis techniques
                          • 2. Alert handling and response
                            Firewall Troubleshooting and Operations- Incident response in firewall environments
                            • 1. Rule misconfiguration diagnosis
                              • 2. Connectivity issue troubleshooting
                                - Monitoring and maintenance
                                • 1. Security log review
                                  • 2. Performance tuning
                                    VPN and Secure Communications- VPN technologies
                                    • 1. SSL/TLS VPN concepts
                                      • 2. IPSec fundamentals
                                        - Encryption and tunneling
                                        • 1. Symmetric and asymmetric encryption
                                          • 2. Key exchange mechanisms
                                            GIAC Certified Firewall Analyst Sample Questions:

                                            Question #1

                                            Which of the following fields is 13 bits long and specifies the offset of a particular fragment relative to the beginning of the original un-fragmented IP datagram?

                                            A. Protocol
                                            B. Time to live
                                            C. Header checksum
                                            D. Fragment offset


                                            Question #2

                                            An IDS is a group of processes working together in a network. These processes work on different computers and devices across the network. Which of the following processes does an IDS perform?
                                            Each correct answer represents a complete solution. Choose all that apply.

                                            A. Statistical analysis of abnormal traffic patterns
                                            B. Monitoring and analysis of user and system activity
                                            C. Network traffic analysis
                                            D. Event log analysis


                                            Question #3

                                            Which of the following devices are used to implement Network Address Translation (NAT)?

                                            A. Routers and firewalls
                                            B. Routers and switches
                                            C. Switches and firewalls
                                            D. Firewalls and file servers


                                            Question #4

                                            Audit trail or audit log is a chronological sequence of audit records, each of which contains evidence directly pertaining to and resulting from the execution of a business process or system function. Under which of the following controls does audit control come?

                                            A. Preventive controls
                                            B. Detective controls
                                            C. Protective controls
                                            D. Reactive controls


                                            Question #5

                                            John works as a Security Manager for Gentech Inc. The company has a Windows-based network.
                                            John has been assigned a project to detect the services used by an attack to access the network.
                                            For this purpose, he is required to use the predefined service objects of the rulebase. This predefined service object defines the services used in the attack to access the network. Which of the following objects will he create when he finds that the attack is not defined in the predefined service objects?

                                            A. Protocol anomaly attack objects
                                            B. Custom service objects
                                            C. Signature attack objects
                                            D. Compound attack objects


                                            Solutions:

                                            Question #1
                                            Answer: D
                                            Question #2
                                            Answer: A,B,C,D
                                            Question #3
                                            Answer: A
                                            Question #4
                                            Answer: B
                                            Question #5
                                            Answer: B

                                            GCFW Related Exams
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                                            GSLC - GIAC Security Leadership Certification (GSLC)
                                            GCED - GIAC Certified Enterprise Defender
                                            GCFW - GIAC Certified Firewall Analyst
                                            Related Certifications
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