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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Security Event and Incident Logging | - Log formats, standards, and protocol details - Deployment, aggregation, and retention strategies - Correlating logs to reconstruct events and activity |
| Network Architecture and Design | - Segmentation, filtering, and security architecture principles - Design considerations for forensics and evidence collection - Network topologies, transmission technologies, and collection points |
| Open-Source Network Security Proxies | - Benefits, limitations, and security weaknesses - Log formats, data flow, and forensic value - Architecture, deployment, and operational characteristics |
| 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 - TCP, UDP, IP, HTTP, DNS, SMTP, FTP, and other core protocols - Protocol behavior, characteristics, and normal operation |
| 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 - Visualization and analysis tools and techniques - NetFlow, IPFIX, and flow data formats |
| Wireless Network Analysis | - Wireless protocols, operation, and security risks - Capture, analysis, and interpretation of wireless traffic - Threats, attacks, and forensic investigation methods |
| Encryption and Encoding Techniques | - Common encoding methods and data obfuscation - Attacks against encryption and encoding controls - Encryption algorithms, usage, and implementation |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Question 1
Which log format is commonly used in UNIX/Linux environments?
Response:
A. Syslog
B. JSON
C. Windows Event Log
D. NetFlow
Question 2
What are potential indicators of malicious network activity in an unknown protocol?
(Select two.)
Response:
A. Use of TLS encryption
B. Repeated failed login attempts
C. Large encrypted data transfers to unknown IPs
D. Traffic on well-known service ports
Question 3
Which of the following are characteristics of symmetric encryption?
(Select two.)
Response:
A. Requires a public-private key pair
B. Uses digital signatures for verification
C. Uses a shared secret key
D. Faster than asymmetric encryption
Question 4
Which security measures help protect against unauthorized access to network architecture?
(Select two.)
Response:
A. Implementing least privilege access
B. Allowing open access to all internal systems
C. Using default admin credentials
D. Deploying intrusion detection systems (IDS)
Question 5
Which of the following hashing algorithms belong to the SHA-2 family?
(Select two.)
Response:
A. SHA-512
B. SHA-1
C. SHA-256
D. MD5
Solutions:
| Question 1 Answer: A | Question 2 Answer: B,C | Question 3 Answer: C,D | Question 4 Answer: A,D | Question 5 Answer: A,C |
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