The zero-trust model is a security concept centered on the belief that organizations should not automatically trust anything inside or outside its perimeters and instead must verify anything and everything trying to connect to its systems before granting access. The Software Defined Perimeter (SDP) aligns with this model by creating a dynamic, context-aware, and secure boundary around network resources. SDP controls access to resources based on identity, authentication, and authorization, ensuring that only authenticated and authorized users or systems can access the services they require. This approach minimizes the attack surface by hiding network resources from unauthorized or unauthenticated users, which is a core principle of zero-trust security.
References: The information aligns with the principles of zero-trust security as outlined in the NIST 800-207 standard for Zero Trust1 and is supported by the Cloud Security Alliance's documentation on Software-Defined Perimeter (SDP) and Zero Trust2. Additionally, the relationship between SDP and zero-trust is discussed in various industry sources, highlighting SDP as an architecture that enables the zero-trust model by providing secure and authenticated access to network resources34.