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GIAC GIAC Information Security GCFW

GCFW

Exam Code: GCFW

Exam Name: GIAC Certified Firewall Analyst

Updated Time: Oct 02, 2026

Q & A: 391 Questions and Answers

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About GIAC GCFW Exam Materials

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GIAC GCFW Exam Syllabus Topics:

SectionObjectives
Topic 1: Intrusion Detection and Prevention- Traffic monitoring and analysis
  • 1. Alert handling and response
    • 2. Log analysis techniques
      - IDS/IPS concepts
      • 1. Signature-based detection
        • 2. Anomaly-based detection
          Topic 2: 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
                  Topic 3: Network Security Fundamentals- TCP/IP and network protocol analysis
                  • 1. Packet structure and traffic flow
                    • 2. Network addressing and subnetting concepts
                      - Security principles
                      • 1. Threat modeling basics
                        • 2. CIA triad and risk concepts
                          Topic 4: Firewall Troubleshooting and Operations- Monitoring and maintenance
                          • 1. Security log review
                            • 2. Performance tuning
                              - Incident response in firewall environments
                              • 1. Rule misconfiguration diagnosis
                                • 2. Connectivity issue troubleshooting
                                  Topic 5: Firewall Technologies- Firewall configuration and rule management
                                  • 1. Access control lists (ACLs)
                                    • 2. Policy design and rule optimization
                                      - Firewall types and architectures
                                      • 1. Packet-filtering firewalls
                                        • 2. Stateful inspection firewalls
                                          • 3. Application-layer firewalls

                                            GIAC Certified Firewall Analyst Sample Questions:

                                            Question #1
                                            Which of the following is like a malicious cache poisoning where fake data is placed in the cache of the name servers?

                                            A. SYN flood attack
                                            B. Host name spoofing
                                            C. DNS spoofing
                                            D. Smurf attack


                                            Question #2
                                            Adam works as a professional Computer Hacking Forensic Investigator. A project has been assigned to him to investigate computer of an unfaithful employee of SecureEnet Inc. Suspect's computer runs on Windows operating system. Which of the following sources will Adam investigate on a Windows host to collect the electronic evidences?
                                            Each correct answer represents a complete solution. Choose all that apply.

                                            A. Unused and hidden partition
                                            B. Swap files
                                            C. Allocated cluster
                                            D. Slack spaces


                                            Question #3
                                            A Proxy firewall, also known as Application Gateway Firewall, filters information at which of the following layers of the OSI reference model?
                                            Each correct answer represents a part of the solution. Choose all that apply.

                                            A. Physical layer
                                            B. Presentation layer
                                            C. Transport layer
                                            D. Application layer


                                            Question #4
                                            Which of the following are the countermeasures against a man-in-the-middle attack?
                                            Each correct answer represents a complete solution. Choose all that apply.

                                            A. Using Secret keys for authentication.
                                            B. Using public key infrastructure authentication.
                                            C. Using Off-channel verification.
                                            D. Using basic authentication.


                                            Question #5
                                            John works as a professional Ethical Hacker. He has been assigned the project of testing the security of www.we-are-secure.com. He wants to send malicious data packets in such a manner that one packet fragment overlaps data from a previous fragment so that he can perform IDS evasion on the We-are-secure server and execute malicious data. Which of the following tools can he use to accomplish the task?

                                            A. Ettercap
                                            B. Alchemy Remote Executor
                                            C. Mendax
                                            D. Hunt


                                            Solutions:

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

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