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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: 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 |
| Topic 2: Encryption and Encoding Techniques | - Encryption algorithms, usage, and implementation - Attacks against encryption and encoding controls - Common encoding methods and data obfuscation |
| Topic 3: Security Event and Incident Logging | - Correlating logs to reconstruct events and activity - Deployment, aggregation, and retention strategies - Log formats, standards, and protocol details |
| Topic 4: Network Protocol Reverse Engineering | - Identifying malicious or non-standard communications - Extracting structure, behavior, and data from traffic - Tools and methodologies for analyzing unknown or proprietary protocols |
| Topic 5: NetFlow Analysis and Attack Visualization | - Using flow data to identify anomalies, attacks, and lateral movement - Visualization and analysis tools and techniques - NetFlow, IPFIX, and flow data formats |
| Topic 6: 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 |
| Topic 7: Wireless Network Analysis | - Wireless protocols, operation, and security risks - Capture, analysis, and interpretation of wireless traffic - Threats, attacks, and forensic investigation methods |
| Topic 8: Open-Source Network Security Proxies | - Benefits, limitations, and security weaknesses - Log formats, data flow, and forensic value - Architecture, deployment, and operational characteristics |
| Topic 9: Network Architecture and Design | - Network topologies, transmission technologies, and collection points - Design considerations for forensics and evidence collection - Segmentation, filtering, and security architecture principles |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Question 1
Which technologies are commonly used in network segmentation strategies?
(Select two.)
Response:
A. VPN
B. MPLS
C. IPv6
D. VLANs
Question 2
A network administrator notices that an internal web server is being accessed from multiple external sources in an unusual pattern. What security proxy feature would help in identifying and mitigating this attack?
Response:
A. DNS caching
B. Application-layer filtering
C. Port forwarding
D. Data compression
Question 3
Which security measures help protect against unauthorized access to network architecture?
(Select two.)
Response:
A. Implementing least privilege access
B. Deploying intrusion detection systems (IDS)
C. Using default admin credentials
D. Allowing open access to all internal systems
Question 4
Which wireless frequency band provides better penetration through walls but lower data speeds?
Response:
A. 2.4 GHz
B. 6 GHz
C. 5 GHz
D. 60 GHz
Question 5
Which of the following are characteristics of symmetric encryption?
(Select two.)
Response:
A. Faster than asymmetric encryption
B. Uses a shared secret key
C. Requires a public-private key pair
D. Uses digital signatures for verification
Solutions:
| Question 1 Answer: B,D | Question 2 Answer: B | Question 3 Answer: A,B | Question 4 Answer: A | Question 5 Answer: A,B |
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