In microservices architectures, exposing resource services directly to the network is a critical security flaw. This guide addresses the common scenario where clients bypass the gateway and call services directly, and shows how to prevent it using Sa-Token. It covers two key aspects: gateway forwarding authentication to ensure requests come through the gateway, and RPC call authentication to secure inter-service communication. The approach is practical for teams already using a gateway but wanting to harden their internal service boundaries. The examples are directly applicable to Java-based microservices and provide a clear path to closing this security gap. This is essential reading for architects and developers concerned about service exposure in production environments.
Learn how to prevent clients from bypassing the gateway in microservices using Sa-Token for both gateway forwarding and RPC call authentication.