Spring Security

Adding Spring Security

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Tim te Beek

Adding Spring Security to an existing application can be quite a daunting prospect. Merely adding the required dependencies to your project sets off a chain of events which can break your application and tests.

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Spring Cloud Gateway with OpenID Connect and Token Relay

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Tim te Beek

When combined with Spring Security 5.2+ and an OpenID Provider such as Keycloak, one can rapidly setup and secure Spring Cloud Gateway for OAuth2 resource servers.

Spring Cloud Gateway aims to provide a simple, yet effective way to route to APIs and provide cross cutting concerns to them such as: security, monitoring/metrics, and resiliency.

We consider this combination a promising standards-based gateway solution, with desirable characteristics such as hiding tokens from the client, while keeping complexity to a minimum.

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Spring Security: Custom Permission Evaluator

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Tim te Beek

Often you’ll find access decisions move beyond simplistic ownership or having a certain role, for instance when users share domain objects with other users. In such cases it’s common to separate permission to view an instance from being able to make changes to the same instance. When your access rules are relatively straightforward, Spring Security offers the PermissionEvaluator interface to secure instance access.

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