Book Image

Keycloak - Identity and Access Management for Modern Applications

By : Stian Thorgersen, Pedro Igor Silva
Book Image

Keycloak - Identity and Access Management for Modern Applications

By: Stian Thorgersen, Pedro Igor Silva

Overview of this book

Implementing authentication and authorization for applications can be a daunting experience, often leaving them exposed to security vulnerabilities. Keycloak is an open-source solution for identity management and access management for modern applications, which can make a world of difference if you learn how to use it. Keycloak, helping you get started with using it and securing your applications. Complete with hands-on tutorials, best practices, and self-assessment questions, this easy-to-follow guide will show you how to secure a sample application and then move on to securing different application types. As you progress, you will understand how to configure and manage Keycloak as well as how to leverage some of its more advanced capabilities. Finally, you'll gain insights into securely using Keycloak in production. By the end of this book, you will have learned how to install and manage Keycloak as well as how to secure new and existing applications.
Table of Contents (21 chapters)
Section 1: Getting Started with Keycloak
Section 2: Securing Applications with Keycloak
Section 3: Configuring and Managing Keycloak
Section 4: Security Considerations

Using Keycloak as a centralized authorization server

So far, you have been presented with authorization strategies that rely on a specific access control mechanism. Except for ABAC, these strategies rely on a specific set of data about the user to enforce access in applications. In addition to that, those strategies are tightly coupled with your applications, where changes to your security requirements would require changes in your application code.

As an example, suppose you have the following pseudo-code in your application:

If (User.hasRole("manager") {
     // can access the protected resource

In the preceding code, we have a quite simple check using RBAC where only users granted a manager role can access a protected resource. What would happen if your requirements changed and you also needed to give access to that same resource to a specific user? Or even grant access to that resource for users granted some other role? Or perhaps leverage...