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GIAC GNFA Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Network Architecture and Design | - Design considerations for forensics and evidence collection - Segmentation, filtering, and security architecture principles - Network topologies, transmission technologies, and collection points |
| Topic 2: Security Event and Incident Logging | - Deployment, aggregation, and retention strategies - Log formats, standards, and protocol details - Correlating logs to reconstruct events and activity |
| Topic 3: Common Network Protocols | - Protocol behavior, characteristics, and normal operation - Security risks, vulnerabilities, and mitigation controls - TCP, UDP, IP, HTTP, DNS, SMTP, FTP, and other core protocols |
| Topic 4: Open-Source Network Security Proxies | - Log formats, data flow, and forensic value - Benefits, limitations, and security weaknesses - Architecture, deployment, and operational characteristics |
| Topic 5: Network Analysis Tools and Usage | - Command-line and GUI-based forensic utilities - Practical application in investigation and analysis - Traffic capture and analysis tools (tcpdump, Wireshark, etc.) |
| Topic 6: Network Protocol Reverse Engineering | - Extracting structure, behavior, and data from traffic - Tools and methodologies for analyzing unknown or proprietary protocols - Identifying malicious or non-standard communications |
| Topic 7: Encryption and Encoding Techniques | - Common encoding methods and data obfuscation - Attacks against encryption and encoding controls - Encryption algorithms, usage, and implementation |
| 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: NetFlow Analysis and Attack Visualization | - Visualization and analysis tools and techniques - Using flow data to identify anomalies, attacks, and lateral movement - NetFlow, IPFIX, and flow data formats |
GIAC Network Forensic Analyst (GNFA) Sample Questions:
Which open-source tool is commonly used as a forward and reverse proxy for security analysis?
Response:
- A. Wireshark
- B. Snort
- C. Nessus
- D. Burp Suite
Correct Answer: D 🗳️
Which of the following best describes a Zero Trust network architecture?
Response:
- A. A security model where all traffic inside the network is considered trusted
- B. A network that relies only on firewalls for security
- C. A traditional perimeter-based security model
- D. A security model that requires continuous authentication and verification
Correct Answer: D 🗳️
A company wants to prevent employees from accessing malicious websites while browsing the internet. Which type of proxy would best meet this requirement?
Response:
- A. Load balancer
- B. Transparent forward proxy
- C. Reverse proxy
- D. Network intrusion detection system
Correct Answer: B 🗳️
Which of the following NetFlow-based anomalies could indicate a Distributed Denial-of-Service (DDoS) attack?
(Select two.)
Response:
- A. Unusual encrypted payload patterns
- B. High number of unique destination IPs from a single source
- C. Large number of failed login attempts
- D. High volume of traffic from a single source
Correct Answer: B,D 🗳️
Which of the following network components is responsible for enforcing security policies between different network segments?
Response:
- A. Switch
- B. Firewall
- C. Load Balancer
- D. Router
Correct Answer: B 🗳️
