Webinar Description
Operational technology (OT) environments require continuous, reliable access to critical systems to maintain essential operations. Dependence on external cloud services for secure connectivity can introduce significant risks, such as increased latency, additional dependencies, and potential single points of failure. These challenges may disrupt operations, particularly during network outages or disruptions, making it crucial for organizations to consider alternative approaches to secure access.
Understanding the Limitations of Cloud-Based ZTNA
Cloud-based Zero Trust Network Access (ZTNA) solutions typically rely on third-party cloud brokers to manage secure connections. While this model can simplify remote access, it also brings vulnerabilities that are especially problematic in OT environments. The reliance on external infrastructure can result in latency issues and create single points of failure, both of which are unacceptable where operational continuity is critical. Furthermore, cloud dependencies can prevent effective operation in air-gapped or disconnected scenarios, which are common in OT settings.
In addition, organizations may face challenges with compliance and data sovereignty when using cloud-based ZTNA, as sensitive operational data may traverse or reside in external environments. This can complicate regulatory adherence and increase the risk of data exposure.
Benefits of Direct-Routed ZTNA for OT Systems
A direct-routed ZTNA approach addresses these concerns by ensuring all traffic remains within the internal infrastructure. This method eliminates the need for cloud brokers, enhancing resilience and reducing latency. By maintaining secure access internally, organizations can ensure that critical operations continue even if external connectivity is lost. This is particularly advantageous for air-gapped or isolated environments, where external dependencies are not feasible or permitted.
Direct-routed ZTNA also allows organizations to maintain full control over their security policies and authentication processes. This control is essential for meeting the unique security and compliance requirements of OT environments, where uninterrupted access and data integrity are paramount.
Enhancing Security and Operational Resilience
Implementing direct-routed ZTNA enables organizations to enforce least-privilege access at the protocol level, ensuring users and devices only access resources necessary for their roles. This approach strengthens defenses against unauthorized access and potential threats. Additionally, direct routing improves DDoS survivability by minimizing exposure to external attacks, further protecting critical systems.
Organizations also benefit from retaining full control over authentication, policy enforcement, and logging. These capabilities are essential for effective compliance management and security monitoring within OT systems, supporting both operational and regulatory requirements.
Conclusion
For operational technology environments, adopting a direct-routed ZTNA model provides significant advantages over cloud-based solutions. By keeping traffic internal and eliminating reliance on external brokers, organizations achieve greater security, lower latency, and improved operational resilience. This approach aligns with the unique demands of OT systems, ensuring continuous and secure access even in the most challenging environments.