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Token as a Service for Software-Defined Zero Trust Networking
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NETL
NSTL
Springer Nature
Zero Trust Networking (ZTN) is more challenging in a multi-tenant environment. To meet different service requirements of multi-tenants and minimize the risk of physical deployment with low operational and capital expenditures, investments in Software-Defined Networks (SDN) based ZTN have been increased. The research question is whether is there any SDN-based architecture to maintain a trusted zone in a complex multi-tenant environment, where each network equipment can be dynamically configurable by many SDN controllers in a distributed way without security breach. Therefore, this paper proposes a novel Software-Defined Zero Trust Networking (SDZTN) decoupling Cyber and Physical layers. To maintain a trusted zone, it proposes a novel Token as a Service (TaaS) that executes genetic algorithm-based service optimization and generates unique tokens by its solution and using a simply implemented JSON Web Token (JWT). It reduces authentication/authoriza-tion load in cloud servers by simplifying and distributing databases in each Open-Flow switch. According to the proposed Zero Trust Evaluation (ZTE) metric con-sidering the token similarity and infection probability, SDZTN results in 25% higher trust than the conventional one. It also overcomes several infection attacks which have the potential to revolutionize token management systems by providing decen-tralized, easily implementable, and trusted solutions.
Zero trust networkSoftware defined networkAuthenticationSoftware as a serviceGenetic algorithm
NETL
NSTL
Springer Nature
