Most Recent Eccouncil ICS-SCADA Exam Dumps

NIST SP 800-53 is a publication that provides a catalog of security and privacy controls for federal information systems and organizations and promotes the development of secure and resilient federal information and information systems.

According to the NIST SP 800-53 Rev. 5, the framework defines a comprehensive set of controls, which are divided into different families. Among these families, there are specifically nine families categorized under management controls. These include categories such as risk assessment, security planning, program management, and others.

Reference

'NIST Special Publication 800-53 (Rev. 5) Security and Privacy Controls for Information Systems and Organizations.'

NIST website: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-53r5.pdf

IEC 62443 is a series of standards designed to secure Industrial Automation and Control Systems (IACS). It provides a framework for implementing cybersecurity measures in the context of industrial environments.

The Defense in Depth (DiD) approach outlined in IEC 62443 involves multiple layers of security measures to protect industrial networks. This method ensures that if one layer fails, others are in place to continue protection.

Specifically, the IEC 62443 framework describes six fundamental steps in setting up a Defense in Depth strategy, covering aspects from physical security to network segmentation and device hardening.

Reference

International Electrotechnical Commission, IEC 62443 Series.

'Understanding IEC 62443 for Industrial Cybersecurity,' by ISA99 Committee.

The IEC 62443 standard outlines a comprehensive framework for securing industrial automation and control systems (IACS). The Defense in Depth concept within this standard includes six steps designed to ensure robust security.

Step 1: Identification and Authentication Control (IAC): Ensuring only authorized users and devices can access the system.

Step 2: Use Control (UC): Managing permissions and access controls to restrict actions users can perform.

Step 3: System Integrity (SI): Ensuring the system remains in a trustworthy state, protected from unauthorized changes.

Step 4: Data Confidentiality (DC): Protecting sensitive data from unauthorized access and disclosure.

Step 5: Restricted Data Flow (RDF): Controlling and monitoring data flows to prevent unauthorized data transmission.

Step 6: Timely Response to Events (TRE): Implementing mechanisms to detect, respond to, and recover from security incidents.

These steps collectively form the Defense in Depth strategy prescribed by IEC 62443.

Reference

'IEC 62443 - Industrial Automation and Control Systems Security,' International Electrotechnical Commission, IEC 62443.

'Defense in Depth,' Cybersecurity and Infrastructure Security Agency (CISA), Defense in Depth.

The netstat command is a versatile networking tool used for various network-related information-gathering tasks, including displaying all network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.

The specific option -r with the netstat command is used to display the routing table.

This information is critical for troubleshooting network issues and understanding how data is routed through a network, identifying possible points of failure or security vulnerabilities.

Reference

'Linux Network Administrator's Guide,' by O'Reilly Media.

Man pages for netstat in UNIX/Linux distributions.

IPsec (Internet Protocol Security) has two modes: Transport mode and Tunnel mode.

Tunnel mode is used to create a secure connection tunnel between two endpoints (e.g., two gateways, or a client and a gateway) and it encapsulates the entire IP packet.

This mode not only protects the payload but also the header information of the original IP packet, thereby providing a higher level of security compared to Transport mode, which only protects the payload.

Reference

Kent, S. and Seo, K., 'Security Architecture for the Internet Protocol,' RFC 4301, December 2005.

'IPsec Services,' Microsoft TechNet.

The Common Vulnerability Scoring System (CVSS) is a framework for rating the severity of security vulnerabilities. CVSS provides three main score areas: Base, Temporal, and Environmental.

Base Score evaluates the intrinsic qualities of a vulnerability.

Temporal Score reflects the characteristics of a vulnerability that change over time.

Environmental Score considers the specific impact of the vulnerability on a particular organization, tailoring the Base and Temporal scores according to the importance of the affected IT asset. Reference:

FIRST, 'Common Vulnerability Scoring System v3.1: Specification Document'.