Non-repudiation is a fundamental attribute of network defense that ensures that neither party can deny the authenticity of their communications. In the context of Simran’s actions as a network administrator, by mandating authentication before any connection establishment or message transfer, she is ensuring that the identity of the communicating parties can be confirmed and that the parties cannot later deny having sent or received the messages. This is crucial for maintaining accountability and trust within the network, as it provides irrefutable proof of the origin and integrity of the communications.

References: The concept of non-repudiation is widely recognized in cybersecurity and network defense literature as one of the key attributes that contribute to the security and integrity of digital communications. It is often discussed alongside other core principles such as integrity, availability, authentication, and confidentiality123.

COBIT (Control Objectives for Information and Related Technologies) is a framework designed to help organizations develop, implement, monitor, and improve IT governance and management practices. It is recognized for its comprehensive approach to aligning IT goals with business objectives, ensuring that IT investments support the overall strategic direction of the company. COBIT provides a set of controls over IT and consolidates them into a framework that helps organizations ensure that their IT infrastructure is secure, reliable, and efficient, while also being aligned with their business goals12.

References:

• ISACA’s “Connecting Business and IT Goals Through COBIT 5” article provides insights into how COBIT 5 connects business goals with IT goals using non-technical, business language1.
• The Interface Technical Training blog post on “Aligning IT goals using the COBIT5 Goals Cascade” explains the process of translating stakeholder needs into enterprise goals, IT-related goals, and enabler goals, which is key to supporting alignment between an enterprise’s needs and IT solutions and services2.

The best option for 24-hour monitoring of the physical perimeter and entrance doors is to install a CCTV system. CCTV cameras serve as both a deterrent to unauthorized entry and a means of surveillance to monitor activities. They can be positioned to cover the entrance doors and the street, providing a broad view of the area that needs to be secured. This aligns with the principles of intrusion detection and prevention, which include deterrence through visible security measures like cameras, and detection through continuous monitoring.

References: The information aligns with the core principles of intrusion detection systems, which include deterrence and detection, as outlined in the resources related to Physical Intrusion Detection Systems (PIDS) and Certified Network Defender (CND) training materials12.