This presentation explores the implementation of Network Access Control (NAC) at Dublin City University (DCU). It will detail the strategic planning, challenges encountered, and significant benefits realised, providing attendees with practical insights into deploying NAC effectively to enhance network security.

Network Access Control (NAC) is a key element in the security architecture of large organizations. It facilitates the enforcement of security policies, authenticates and authorizes users, and monitors and manages network access. At DCU, the growing complexity of our network and the increasing security threats highlighted the need for a robust NAC solution. This project aimed to address these challenges by implementing a scalable and efficient NAC system.

DCU's network faced numerous security challenges due to its diverse user base and wide array of devices, including student laptops, mobile devices, faculty computers, and IoT devices. Ensuring secure access while maintaining compliance with security policies was a complex task. Unauthorized access and potential security breaches posed significant risks, underscoring the necessity for a comprehensive NAC solution.

The NAC implementation project began with clear objectives: enhancing network security, improving visibility and control over connected devices, and streamlining network management. Engaging stakeholders—including IT staff, faculty, and administration—was crucial to ensure alignment and support. The selection process for the NAC solution involved evaluating various products based on scalability, compatibility, and ease of integration with our existing infrastructure.

The implementation strategy was planned and divided into phases to minimize disruptions. The initial phase focused on configuring and testing the NAC solution in a controlled environment, addressing compatibility issues, and fine-tuning configurations.

The deployment process is being executed in a phased manner across campus networks. Initial configurations involved setting up authentication mechanisms to ensure that only authorized users and devices could access the network.

Technical challenges, such as compatibility issues and configuration errors, were inevitable. These were addressed through rigorous testing and collaboration with the NAC solution provider. Continuous monitoring and policy adjustments were essential to address evolving security threats and operational needs. Automation tools were created and provided to the help desk and operation teams.

The NAC implementation provided significant benefits for DCU. Network security was substantially enhanced, preventing unauthorized access and ensuring compliance with security policies. Improved visibility and control over network endpoints enabled more efficient management and troubleshooting. The streamlined network management processes resulted in reduced operational costs and enhanced overall network performance.

The implementation of NAC at DCU underscores the critical role of advanced security solutions in maintaining a secure and efficient network environment. This project has not only enhanced network security but also provided valuable lessons in deploying and managing NAC solutions. We believe sharing this information can assist in showing how NAC can transform network security in educational institutions.