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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Analysis Tools and Usage | - Traffic capture and analysis tools (tcpdump, Wireshark, etc.) - Command-line and GUI-based forensic utilities - Practical application in investigation and analysis |
| Topic 2: Open-Source Network Security Proxies | - Log formats, data flow, and forensic value - Architecture, deployment, and operational characteristics - Benefits, limitations, and security weaknesses |
| Topic 3: Network Protocol Reverse Engineering | - Tools and methodologies for analyzing unknown or proprietary protocols - Identifying malicious or non-standard communications - Extracting structure, behavior, and data from traffic |
| Topic 4: Encryption and Encoding Techniques | - Encryption algorithms, usage, and implementation - Attacks against encryption and encoding controls - Common encoding methods and data obfuscation |
| Topic 5: NetFlow Analysis and Attack Visualization | - Visualization and analysis tools and techniques - NetFlow, IPFIX, and flow data formats - Using flow data to identify anomalies, attacks, and lateral movement |
| Topic 6: Network Architecture and Design | - Network topologies, transmission technologies, and collection points - Design considerations for forensics and evidence collection - Segmentation, filtering, and security architecture principles |
| Topic 7: Common Network Protocols | - Security risks, vulnerabilities, and mitigation controls - TCP, UDP, IP, HTTP, DNS, SMTP, FTP, and other core protocols - Protocol behavior, characteristics, and normal operation |
| Topic 8: Wireless Network Analysis | - Threats, attacks, and forensic investigation methods - Capture, analysis, and interpretation of wireless traffic - Wireless protocols, operation, and security risks |
| Topic 9: Security Event and Incident Logging | - Correlating logs to reconstruct events and activity - Deployment, aggregation, and retention strategies - Log formats, standards, and protocol details |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Which of the following encoding methods is most commonly used to represent binary data in text format?
Response:
- A. Base64
- B. SHA-256
- C. Blowfish
- D. XOR
Correct Answer: A 🗳️
What is a common attack technique used to intercept wireless network traffic?
Response:
- A. Man-in-the-Middle (MITM)
- B. Cross-Site Scripting (XSS)
- C. DNS Tunneling
- D. ARP Spoofing
Correct Answer: A 🗳️
Which benefits do security proxies provide in enterprise environments?
(Select two.)
Response:
- A. Reducing network latency
- B. Preventing all phishing attacks
- C. Content filtering and malware detection
- D. Logging and monitoring network traffic
Correct Answer: C,D 🗳️
Which of the following hashing algorithms belong to the SHA-2 family?
(Select two.)
Response:
- A. MD5
- B. SHA-256
- C. SHA-512
- D. SHA-1
Correct Answer: B,C 🗳️
Which challenges are commonly encountered when reverse engineering network protocols?
(Select two.)
Response:
- A. Presence of encryption
- B. Use of default ports
- C. Lack of documentation
- D. Standardized communication patterns
Correct Answer: A,C 🗳️
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