Zero Trust and Software-Defined Wide Area Networking (SD-WAN) are two prominent approaches that organizations are considering to meet their network requirements in the hybrid work environment. While there is growing discussion about whether Zero Trust will replace SD-WAN as the preferred network architecture, it is important to understand both concepts and their compatibility with each other.
SD-WAN, which stands for Software-Defined Wide Area Networking, is a technology that allows organizations to connect and manage various types of networks through software-defined control and centralized management. It optimizes network performance, enhances security, and reduces costs by routing traffic based on application, bandwidth requirements, and network conditions. SD-WAN is particularly useful for organizations with geographically distributed branches, as it enables them to efficiently leverage multiple network links.
On the other hand, Zero Trust is a security concept that challenges the traditional perimeter-based security model. Instead of assuming trust within the network, Zero Trust assumes zero trust and requires authentication and authorization for every user, device, and network element before granting access to resources. It employs granular access controls, continuous monitoring, and adaptive authentication to minimize the risk of breaches and insider threats.
While SD-WAN focuses on optimizing network performance and Zero Trust emphasizes security, they can complement each other to create a more robust and secure network infrastructure. Zero Trust can enhance SD-WAN’s security capabilities by adding an additional layer of authentication and access control. By implementing Zero Trust principles, organizations can ensure that only authorized users and devices can access the SD-WAN network and its associated resources, strengthening the overall security posture.
Similarly, SD-WAN can improve the performance and efficiency of Zero Trust implementations. Its ability to dynamically route traffic based on network conditions and application requirements enhances the user experience and minimizes latency associated with Zero Trust security measures.
It is unlikely that Zero Trust will completely replace SD-WAN, as both approaches serve different purposes and address distinct aspects of networking and security. SD-WAN offers benefits in terms of network performance optimization, cost reduction, and resource utilization. It is especially valuable for organizations with distributed branches that require reliable connectivity and application performance across diverse network links.
On the other hand, Zero Trust primarily focuses on securing access to resources, addressing the evolving threat landscape, and providing a proactive approach to network security. It ensures that only authorized entities can access resources, minimizing the risk of breaches and insider threats.
In conclusion, Zero Trust and SD-WAN can work together to provide a comprehensive network solution. While SD-WAN optimizes network performance and reduces costs, Zero Trust enhances security. Organizations should understand their specific requirements and align their network strategy accordingly, leveraging both approaches to create a robust and future-proof networking solution.
About the Author:
Jaye Tillson is the Director of Strategy at Axis Security. With over 20 years of experience in delivering global strategic and enterprise-wide programs, Jaye provides technical advisory to global mergers and acquisitions, large-scale global transformation programs, cyber security governance, digital strategic planning, and operational efficiencies. His expertise includes globalizing IT platforms for cost and resource efficiencies, resilience, and improved information flow. Jaye is recognized as a mentor and coach in his field and stays updated on industry and market trends to provide technology recommendations aligned with business strategy.