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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Analysis Tools and Usage | - Practical application in investigation and analysis - Traffic capture and analysis tools (tcpdump, Wireshark, etc.) - Command-line and GUI-based forensic utilities |
| Topic 2: 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 3: NetFlow Analysis and Attack Visualization | - NetFlow, IPFIX, and flow data formats - Visualization and analysis tools and techniques - Using flow data to identify anomalies, attacks, and lateral movement |
| Topic 4: Security Event and Incident Logging | - Correlating logs to reconstruct events and activity - Log formats, standards, and protocol details - Deployment, aggregation, and retention strategies |
| Topic 5: Encryption and Encoding Techniques | - Attacks against encryption and encoding controls - Common encoding methods and data obfuscation - Encryption algorithms, usage, and implementation |
| Topic 6: 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 7: Open-Source Network Security Proxies | - Log formats, data flow, and forensic value - Architecture, deployment, and operational characteristics - Benefits, limitations, and security weaknesses |
| Topic 8: Wireless Network Analysis | - Wireless protocols, operation, and security risks - Threats, attacks, and forensic investigation methods - Capture, analysis, and interpretation of wireless traffic |
| Topic 9: Network Architecture and Design | - Network topologies, transmission technologies, and collection points - Segmentation, filtering, and security architecture principles - Design considerations for forensics and evidence collection |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Which of the following log sources would be most useful for detecting brute-force login attempts?
Response:
- A. Web server access logs
- B. DNS query logs
- C. Network firewall logs
- D. Authentication logs
Correct Answer: D 🗳️
Which of the following network components is responsible for enforcing security policies between different network segments?
Response:
- A. Load Balancer
- B. Switch
- C. Router
- D. Firewall
Correct Answer: D 🗳️
Which of the following is a security risk associated with open Wi-Fi networks?
Response:
- A. Multi-factor authentication
- B. Encryption key rotation
- C. VLAN segmentation
- D. Unauthenticated access
Correct Answer: D 🗳️
What is the main advantage of a segmented network architecture?
Response:
- A. Reduced performance due to additional firewalls
- B. Elimination of network monitoring needs
- C. Increased complexity in routing
- D. Improved security by limiting lateral movement
Correct Answer: D 🗳️
Which security mechanisms are commonly implemented in proxy servers?
(Select two.)
Response:
- A. Port mirroring
- B. Data loss prevention (DLP)
- C. Network address translation (NAT)
- D. SSL/TLS decryption
Correct Answer: B,D 🗳️
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