Exam Name: GIAC Network Forensic Analyst (GNFA)
Certification Provider: GIAC
Corresponding Certification: Digital Forensics
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Check Updated on: Sep 17, 2026
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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Open-Source Network Security Proxies | - Benefits, limitations, and security weaknesses - Log formats, data flow, and forensic value - Architecture, deployment, and operational characteristics |
| Security Event and Incident Logging | - Correlating logs to reconstruct events and activity - Log formats, standards, and protocol details - Deployment, aggregation, and retention strategies |
| Network Protocol Reverse Engineering | - Extracting structure, behavior, and data from traffic - Identifying malicious or non-standard communications - Tools and methodologies for analyzing unknown or proprietary protocols |
| NetFlow Analysis and Attack Visualization | - Using flow data to identify anomalies, attacks, and lateral movement - NetFlow, IPFIX, and flow data formats - Visualization and analysis tools and techniques |
| Network Architecture and Design | - Segmentation, filtering, and security architecture principles - Design considerations for forensics and evidence collection - Network topologies, transmission technologies, and collection points |
| Wireless Network Analysis | - Capture, analysis, and interpretation of wireless traffic - Wireless protocols, operation, and security risks - Threats, attacks, and forensic investigation methods |
| Encryption and Encoding Techniques | - Encryption algorithms, usage, and implementation - Attacks against encryption and encoding controls - Common encoding methods and data obfuscation |
| Network Analysis Tools and Usage | - Traffic capture and analysis tools (tcpdump, Wireshark, etc.) - Practical application in investigation and analysis - Command-line and GUI-based forensic utilities |
| Common Network Protocols | - Security risks, vulnerabilities, and mitigation controls - Protocol behavior, characteristics, and normal operation - TCP, UDP, IP, HTTP, DNS, SMTP, FTP, and other core protocols |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Which security measures can help protect against deauthentication attacks?
(Select two.)
Response:
- A. Using MAC address filtering
- B. Enabling Management Frame Protection (MFP)
- C. Implementing WPA3
- D. Disabling SSID broadcasting
Correct Answer: B,C 🗳️
Which of the following protocols operate at the transport layer of the OSI model?
(Select two.)
Response:
- A. ICMP
- B. HTTP
- C. TCP
- D. UDP
Correct Answer: C,D 🗳️
Which protocol is commonly used for network device management and monitoring?
Response:
- A. HTTP
- B. DHCP
- C. FTP
- D. SNMP
Correct Answer: D 🗳️
Which of the following fields are typically included in a NetFlow record?
(Select two.)
Response:
- A. Source and destination IP addresses
- B. Number of packets exchanged
- C. Encrypted session keys
- D. Application payload
Correct Answer: A,B 🗳️
An organization wants to implement a secure communication channel between two remote offices. The requirement is to ensure data confidentiality and integrity while being able to decrypt messages when needed. Which of the following cryptographic methods should they use?
Response:
- A. Encoding
- B. Asymmetric encryption
- C. Hashing
- D. Symmetric encryption
Correct Answer: B 🗳️
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