Zero-Trust Microservice Security Models and API Gateway Hardening in Cloud-Native Telecom Systems
DOI:
https://doi.org/10.15662/IJRAI.2021.0406003Keywords:
Zero-trust, microservices, telecom cloud, API gateway, cloud-native security, service mesh, authentication, authorizationAbstract
Cloud-native telecom systems increasingly rely on microservices and APIs to deliver scalable, flexible, and mission-critical services. However, this architectural shift introduces complex security challenges, particularly around multi-tenant isolation, east-west traffic protection, and API exposure. This paper presents a zero-trust security model tailored for telecom-grade microservice environments, emphasizing continuous authentication, fine-grained authorization, and contextual access control. It further explores API gateway hardening strategies, including mutual TLS, rate limiting, anomaly detection, and policy-driven request validation, to mitigate evolving threats. The integration of service meshes and identity-aware proxies is examined as a means to enforce zero-trust principles seamlessly across distributed workloads. Experimental validation demonstrates that applying zero-trust and hardened API gateway designs significantly reduces attack surfaces, ensures compliance with telecom security standards, and sustains system performance. The findings provide a blueprint for telecom operators to implement resilient, secure, and scalable cloud-native infrastructures.
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