In this repository, you will see that how to secure microservices with using standalone Identity Server 4 and backing with Ocelot API Gateway. And API applications with using OAuth 2 and OpenID Connect in IdentityServer4.
First of all, we are going to develop Movies.API project and protect this API resources with IdentityServer4 OAuth 2.0 implementation. Generate JWT Token with client_credentials from IdentityServer4 and will use this token for securing Movies.API protected resources.
Also, we are going to develop centralized standalone Authentication Server and Identity Provider with implementing IdentityServer4 package and the name of microservice is Identity Server. Identity Server4 is an open source framework which implements OpenId Connect and OAuth2 protocols for .Net Core. With Identity Server, we can provide authentication and access control for our web applications or Web APIs from a single point between applications or on a user basis.
Lastly, we are going to develop Ocelot API Gateway and make secure protected API resources over the Ocelot API Gateway with transferring JWT web tokens. Once the client has a bearer token it will call the API endpoint which is fronted by Ocelot. Ocelot is working as a reverse proxy. After Ocelot reroutes the request to the internal API, it will present the token to Identity Server in the authorization pipeline. If the client is authorized the request will be processed and a list of movies will be sent back to the client.
Also over these picture, we have also apply the claim based authentications.