Page 40 - Cyber Defense eMagazine August 2023

WAN provides a flexible and scalable solution for organizations with geographically distributed branches,
enabling them to leverage multiple network links efficiently.

Exploring Zero Trust:

Zero Trust is a security concept that challenges the traditional perimeter-based security model that we
are all familiar with. Instead of assuming trust within our network, Zero Trust assumes zero trust, and
every user, device, and network element must be authenticated and authorized before gaining access to
resources. It employs granular access controls, continuous monitoring, and adaptive authentication to
ensure that only authenticated and authorized users can access specific resources. Zero Trust minimizes
the risk of lateral movement within the network, mitigating the potential impact of breaches and insider
threats.

The Relationship Between Zero Trust and SD-WAN:

Zero Trust and SD-WAN have different primary objectives. SD-WAN focuses on optimizing network
performance, while Zero Trust emphasizes security. However, I believe 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. This prevents
unauthorized access and strengthens the overall security posture.

On the other hand, SD-WAN can improve the performance and efficiency of Zero Trust implementations.
SD-WAN's ability to dynamically route traffic based on network conditions and application requirements
can be used to enhance the user experience and minimize latency associated with Zero Trust security
measures.

Will Zero Trust Replace SD-WAN?

While Zero Trust and SD-WAN can work together to provide a comprehensive network solution, I believe
that it is unlikely that Zero Trust will completely replace SD-WAN. Both approaches serve different
purposes and address distinct aspects of networking and security.

SD-WAN offers significant benefits in terms of network performance optimization, cost reduction, and
efficient resource utilization. It is particularly useful for organizations with distributed branches that require
reliable connectivity and application performance across diverse network links.

On the other hand, Zero Trust is primarily concerned with security and ensuring that only authorized
entities can access resources. It addresses the evolving threat landscape and provides a more proactive
approach to securing networks and protecting sensitive data.

Cyber Defense eMagazine – August 2023 Edition 40
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