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GIAC GICSP Exam Syllabus Topics:

SectionObjectives
Topic 1: ICS Threats, Vulnerabilities, and Risk Management- Threat Landscape and Threat Modeling
  • 1. Threat modeling methodologies
  • 2. ICS-specific threats and actors
- Vulnerabilities and Attack Surfaces
  • 1. Attack vectors and exploitation methods
  • 2. Common vulnerabilities in ICS components
- Risk Assessment and Management
  • 1. Risk assessment frameworks (NIST SP 800-82, IEC 62443)
  • 2. Risk mitigation strategies
Topic 2: ICS Components, Architecture, and Protocols- Purdue Reference Architecture
  • 1. Levels 0–1 devices, technologies, and vulnerabilities
  • 2. Network segmentation and security zones
  • 3. Levels 2–3 devices, technologies, and vulnerabilities
- Communications and Protocols
  • 1. Protocol vulnerabilities and attacks
  • 2. Cryptography and secure communications
  • 3. TCP/IP and industrial-specific protocols
- ICS Overview and Concepts
  • 1. ICS roles, responsibilities, and lifecycle
  • 2. Physical security considerations
  • 3. Differences between ICS and IT environments
Topic 3: ICS Security Architecture and Defense- Wireless and Remote Access Security
  • 1. Secure remote access methods
  • 2. Wireless technologies in ICS
- Defense-in-Depth Strategies
  • 1. Perimeter and internal security controls
  • 2. Network segmentation and access control
- System and Device Hardening
  • 1. Secure configuration and patch management
  • 2. Firmware and software security
Topic 4: ICS Incident Response and Recovery- Detection and Analysis
  • 1. Monitoring and anomaly detection
  • 2. Forensics and evidence collection
- Recovery and Continuity
  • 1. Process continuity and restoration
  • 2. Disaster recovery planning
- Incident Response Planning
  • 1. ICS-specific IR requirements and priorities
  • 2. Coordination between IT and OT teams
Topic 5: ICS Governance, Policy, and Compliance- Standards and Compliance
  • 1. Audit and assessment processes
  • 2. IEC 62443, NIST, and industry regulations
- Security Program Development
  • 1. Change management and configuration control
  • 2. Security policies and procedures
- Training and Awareness
  • 1. Role-based training requirements
  • 2. Personnel security awareness

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GIAC Global Industrial Cyber Security Professional (GICSP) Sample Questions (Q43-Q48):

NEW QUESTION # 43
What is the primary benefit of using network segmentation in ICS architecture?
Response:

Answer: D


NEW QUESTION # 44
Which of the following is a common vulnerability of the DNP3 protocol used in ICS environments?
Response:

Answer: B


NEW QUESTION # 45
For application-aware firewalls filtering traffic between trust zones, which of the following policies should be applied to a packet that doesn't match an existing rule?

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In the context ofIndustrial Control Systems (ICS)andOT network security, the principle of least privilege and explicit access control is fundamental for protecting critical infrastructure assets. According to the GICSP framework, when usingapplication-aware firewallsbetween different trust zones (e.g., corporate network to OT network), any traffic that doesnot explicitly match a defined ruleshould be blocked by default. This is referred to as the"default deny" policy.
* Default denymeans that unless traffic is explicitly allowed by firewall rules, it should be denied. This ensures that no unknown or unauthorized packets traverse trust boundaries, reducing the attack surface significantly.
* Thedefault alertoption (A) is useful for monitoring but does not prevent unauthorized access, so it's insufficient as a security control.
* Application deny list(C) andapplication allow list(D) refer to sets of permitted or denied applications, but the firewall still needs an overarching policy to handle unmatched packets; that policy must be deny for safety.
This approach is emphasized in theICS Security Architecture and Network Segmentationdomain of GICSP, reinforcing that all unknown or unexpected network traffic should be blocked unless explicitly permitted by policy. This aligns withNIST SP 800-82 Rev 2guidance on ICS security, which GICSP incorporates.
Reference:
Global Industrial Cyber Security Professional (GICSP) Official Study Guide, Domain: ICS Security Architecture & Design NIST SP 800-82 Rev 2: Guide to Industrial Control Systems (ICS) Security, Section 5.5 (Network Architecture) GICSP Training Materials, Firewall & Network Segmentation Best Practices Module


NEW QUESTION # 46
As part of a wireless network audit in an ICS facility, you need to secure wireless communication between field devices and control systems. Which of the following measures should you implement?
(Select all that apply)
Response:

Answer: B,C,D


NEW QUESTION # 47
Which of the following devices would indicate an enforcement boundary?

Answer: D

Explanation:
An enforcement boundary is a control point that enforces security policies by controlling traffic or access between network zones.
A router with Access Control Lists (ACLs) (C) acts as an enforcement point by filtering traffic between networks or subnets, establishing security boundaries.
Applications with login screens (A) and antivirus on workstations (B) provide endpoint security but do not enforce network boundaries.
Switches with VLANs (D) support segmentation but do not typically enforce traffic filtering or security policies.
GICSP highlights routers and firewalls as primary enforcement boundary devices in ICS network architectures.
Reference:
GICSP Official Study Guide, Domain: ICS Security Architecture & Design
NIST SP 800-82 Rev 2, Section 5.5 (Network Security Architecture)
GICSP Training on Network Segmentation and Enforcement Boundaries


NEW QUESTION # 48
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