---
title: "Multi-Factor Authentication and OIDC/OAuth2 – GuardianKey Auth Bastion"
source_url: "https://guardiankey.io/guardiankey-auth-bastion/"
language: "en"
description: ""
lastmod: "2026-05-14T13:30:34+00:00"
---
# MFA and OIDC/OAuth2 integration for any system. No code changes required.

GuardianKey Auth Bastion acts as an authentication proxy in front of your application, applying MFA, OIDC/OAuth2 login, and access policies — all with centralized management and simple deployment.

[Enable Your Protection](https://guardiankey.io/contact/)

## Key Features

GuardianKey Auth Bastion is an authentication proxy that protects systems without any code changes. It allows you to easily add MFA and OIDC/OAuth2 integration — all while keeping the user experience seamless and frictionless.

### Multi-Factor Authentication (MFA)

Add an extra layer of security to your systems with built-in MFA. Bastion allows you to configure authentication using tokens, mobile apps, or temporary codes — without complicating the user experience.

### OIDC/OAuth2 Integration

Easily implement authentication via OIDC/OAuth2, even in legacy systems. Bastion acts as a proxy, enabling seamless integration without changing the application’s source code.

### Fast and Flexible Deployment

Bastion works as a reverse proxy, adding advanced authentication with no modifications required to the protected system. It can be deployed in different scenarios, ensuring compatibility and easy adaptation.

### Centralized and Transparent Management

Manage access policies, users, and integrations in a single dashboard. The process is transparent for legitimate users, who face no unnecessary barriers — while ensuring strong protection against unauthorized access.

# Learn More

[](https://guardiankey.io/wp-content/uploads/2024/04/whitepaper_cgxflows.pdf)[](https://guardiankey.io/docs/pt-br/auth-bastion/tech-specs/)

### Technical Specifications

Explore all the specifications of GuardianKey Auth Bastion and see how it fits into your environment.

[](https://guardiankey.io/wp-content/uploads/2024/04/Datasheet_CGXFlows.pdf)[](https://guardiankey.io/docs/pt-br/category/auth-bastion/)

### Auth Bastion Documentation

Dive deeper into the technical and strategic details of the solution.

## Why Choose GuardianKey Auth Bastion?

**Security Before Login**
Add an authentication layer at the proxy level, blocking unauthorized access before it reaches your system.

**Simplified Compliance**
Easily meet requirements such as GDPR and audit controls by quickly applying MFA and OIDC/OAuth2.

**Seamless Experience**
Legitimate users access without additional barriers, while threats are silently blocked.

**Frictionless Adoption**
Deploy in minutes as a reverse proxy, with no need to modify the protected system’s source code.