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Keycloak

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OAuth2

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Keycloak vs OAuth2: What are the differences?

Keycloak: An open source identity and access management solution. It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box; OAuth2: An open standard for access delegation. It is an authorization framework that enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf.

Keycloak and OAuth2 belong to "User Management and Authentication" category of the tech stack.

Advice on Keycloak and OAuth2
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Spring Security
Okta
and
Keycloak

I am working on building a platform in my company that will provide a single sign on to all of the internal products to the customer. To do that we need to build an Authorisation server to comply with the OIDC protocol. Earlier we had built the Auth server using the Spring Security OAuth project but since in Spring Security 5.x it is no longer supported we are planning to get over with it as well. Below are the 2 options that I was considering to replace the Spring Auth Server. 1. Keycloak 2. Okta 3. Auth0 Please advise which one to use.

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Replies (2)
Luca Ferrari
Solution Architect at Red Hat, Inc. · | 3 upvotes · 53.8K views
Recommends
Keycloak

It isn't clear if beside the AuthZ requirement you had others, but given the scenario you described my suggestion would for you to go with Keycloak. First of all because you have already an onpremise IdP and with Keycloak you could maintain that setup (if privacy is a concern). Another important point is configuration and customization: I would assume with Spring OAuth you might have had some custom logic around authentication, this can be easily reconfigured in Keycloak by leveraging SPI (https://www.keycloak.org/docs/latest/server_development/index.html#_auth_spi). Finally AuthZ as a functionality is well developed, based on standard protocols and extensible on Keycloak (https://www.keycloak.org/docs/latest/authorization_services/)

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Sandor Racz
Recommends
Keycloak

We have good experience using Keycloak for SSO with OIDC with our Spring Boot based applications. It's free, easy to install and configure, extensible - so I recommend it.

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Pros of Keycloak
Pros of OAuth2
  • 23
    It's a open source solution
  • 18
    Supports multiple identity provider
  • 11
    OpenID and SAML support
  • 6
    Easy customisation
  • 5
    JSON web token
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    Cons of Keycloak
    Cons of OAuth2
    • 1
      Okta
    • 1
      Lack of Code examples for client side
    • 1
      Poor client side documentation
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      Sign up to add or upvote consMake informed product decisions

      What is Keycloak?

      It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.

      What is OAuth2?

      It is an authorization framework that enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf.

      Need advice about which tool to choose?Ask the StackShare community!

      What companies use Keycloak?
      What companies use OAuth2?
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      What tools integrate with Keycloak?
      What tools integrate with OAuth2?

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      Blog Posts

      Sep 29 2020 at 7:36PM

      WorkOS

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      What are some alternatives to Keycloak and OAuth2?
      Auth0
      A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
      Okta
      Connect all your apps in days, not months, with instant access to thousands of pre-built integrations - even add apps to the network yourself. Integrations are easy to set up, constantly monitored, proactively repaired and handle authentication and provisioning.
      FreeIPA
      FreeIPA is an integrated Identity and Authentication solution for Linux/UNIX networked environments. A FreeIPA server provides centralized authentication, authorization and account information by storing data about user, groups, hosts and other objects necessary to manage the security aspects of a network of computers.
      Dex
      It is a personal CRM that gives you relationship superpowers. Remember where you left off, keep in touch, and be more thoughtful.
      Vault
      Vault is a tool for securely accessing secrets. A secret is anything that you want to tightly control access to, such as API keys, passwords, certificates, and more. Vault provides a unified interface to any secret, while providing tight access control and recording a detailed audit log.
      See all alternatives