095 | Keycloak: An Open-Source Titan in the World of Identity

August 28, 2025

Keycloak: Open Source and Big Ambitions

Introduction

In a world where more and more services outsource user management, Keycloak offers a different path. This project is not just a set of login APIs. It is a full-fledged, self-sufficient authentication server that promises to relieve you from headaches with user management, protocols, and security. At the same time, it remains open source. Sounds like utopia, but let’s take a closer look.

094 | OpenVPN + Keycloak: Modern Authentication

August 27, 2025

The Problem with Certificates at Scale

In previous articles, we discussed that OpenVPN uses certificates for authentication. This method is reliable but has significant drawbacks:

• Inconvenience for users: Each user must manually receive and install their own certificate.
• Complex management: When an employee leaves, their certificate must be revoked, which requires extra steps.
• Lack of centralization: Each service that requires access has its own authorization system.

The solution to this problem is using a centralized identity provider such as Keycloak.