Verify IIS Rewrite Module installation

Oct 13, 2025 by wbrum.org 145 views

Introduction

In this article, we will explore the process of configuring Keycloak on IIS (Internet Information Services) using a reverse proxy. We will cover the setup of Keycloak on port 8010 and configure IIS to rewrite the URL to port 60606. This will allow us to access Keycloak through the IIS reverse proxy, making it easier to manage and secure our Keycloak instance.

Prerequisites

Before we begin, make sure you have the following:

Keycloak: Download and install Keycloak from the official website.
IIS: Ensure that IIS is installed and running on your system.
IIS Rewrite Module: Install the IIS Rewrite Module, which is required for URL rewriting.
ASP.NET Core: Install the ASP.NET Core Runtime and the ASP.NET Core Module for IIS.

Setting Up Keycloak

To set up Keycloak, follow these steps:

Step 1: Download and Install Keycloak

Download the Keycloak installer from the official website and follow the installation instructions.

Step 2: Configure Keycloak

After installation, navigate to the Keycloak administration console by accessing http://localhost:8010. Log in with the default credentials (admin/admin).

Step 3: Configure Keycloak Ports

In the Keycloak administration console, navigate to Realm Settings > Server Settings. Update the Server Port to 8010.

Step 4: Configure Keycloak Realm

Create a new realm or use an existing one. In the realm settings, update the Realm Name and Realm ID.

Configuring IIS

To configure IIS, follow these steps:

Step 1: Create a New IIS Site

Create a new IIS site by accessing the IIS Manager and clicking on Sites > Add Website. Enter a name for the site and select the Default Web Site as the parent site.

Step 2: Configure IIS Rewrite Rules

In the IIS Manager, navigate to the Rewrite module and click on Add Rule(s). Create a new rule with the following settings:

Pattern: ^http://localhost:60606/(.*)$
Action: Rewrite URL
Rewrite URL: http://localhost:8010/$1
Append query string: Yes

This rule will rewrite any incoming requests to http://localhost:60606 to http://localhost:8010.

Step 3: Configure IIS to Use the Rewrite Module

In the IIS Manager, navigate to the Modules section and ensure that the Rewrite module is enabled.

Testing the Configuration

To test the configuration, access http://localhost:60606 in your web browser. You should be redirected to the Keycloak login page.

Troubleshooting

If you encounter any issues during the configuration process, refer to the following troubleshooting tips:

Verify IIS Rewrite Module installation: Ensure that the IIS Rewrite Module is installed and enabled.
Verify Keycloak configuration: Check that Keycloak is running on port 8010 and that the realm settings are correct.
Verify IIS site configuration: Ensure that the IIS site is created and configured correctly.

Conclusion

In this article, we have covered the process of configuring Keycloak on IIS using a reverse proxy. We have set up Keycloak on port 8010 and configured IIS to rewrite the URL to port 60606. This allows us to access Keycloak through the IIS reverse proxy, making it easier to manage and secure our Keycloak instance.

Additional Resources

For more information on Keycloak and IIS, refer to the following resources:

Keycloak Documentation: Official Keycloak documentation.
IIS Documentation: Official IIS documentation.
ASP.NET Core Documentation: Official ASP.NET Core documentation.

Introduction

In our previous article, we covered the process of configuring Keycloak on IIS using a reverse proxy. In this article, we will address some of the frequently asked questions related to this setup.

Q: What is the purpose of using a reverse proxy with Keycloak?

A: A reverse proxy is used to sit between the client and the Keycloak server, allowing for URL rewriting, SSL termination, and other security features. This setup provides an additional layer of security and makes it easier to manage and maintain the Keycloak instance.

Q: How do I configure the IIS Rewrite Module?

A: To configure the IIS Rewrite Module, follow these steps:

Install the IIS Rewrite Module: Download and install the IIS Rewrite Module from the official Microsoft website.
Create a new rule: In the IIS Manager, navigate to the Rewrite module and click on Add Rule(s).
Configure the rule: Create a new rule with the following settings:
- Pattern: ^http://localhost:60606/(.*)$
- Action: Rewrite URL
- Rewrite URL: http://localhost:8010/$1
- Append query string: Yes

Q: How do I troubleshoot issues with the IIS Rewrite Module?

A: To troubleshoot issues with the IIS Rewrite Module, follow these steps:

Verify IIS Rewrite Module installation: Ensure that the IIS Rewrite Module is installed and enabled.
Verify Keycloak configuration: Check that Keycloak is running on port 8010 and that the realm settings are correct.
Verify IIS site configuration: Ensure that the IIS site is created and configured correctly.

Q: Can I use a different port for the Keycloak server?

A: Yes, you can use a different port for the Keycloak server. To do this, update the Server Port setting in the Keycloak administration console.

Q: How do I secure the Keycloak instance behind the IIS reverse proxy?

A: To secure the Keycloak instance behind the IIS reverse proxy, follow these steps:

Enable SSL/TLS: Enable SSL/TLS on the IIS site to encrypt traffic between the client and the Keycloak server.
Configure authentication: Configure authentication on the IIS site to require clients to authenticate before accessing the Keycloak instance.
Configure authorization: Configure authorization on the IIS site to restrict access to the Keycloak instance based on user roles and permissions.

Q: Can I use a load balancer with the IIS reverse proxy?

A: Yes, you can use a load balancer with the IIS reverse proxy. To do this, configure the load balancer to distribute traffic between multiple IIS servers, each running the Keycloak instance.

Q: How do I monitor the Keycloak instance behind the IIS reverse proxy?

A: To monitor the Keycloak instance behind the IIS reverse proxy, follow these steps:

Enable logging: Enable logging on the IIS site to capture traffic and errors.
Configure monitoring tools: Configure monitoring tools, such as Prometheus and Grafana, to collect metrics and performance data from the Keycloak instance.
Use Keycloak's built-in monitoring: Use Keycloak's built-in monitoring features to collect metrics and performance data from the Keycloak instance.

Conclusion

In this article, we have addressed some of the frequently asked questions related to configuring Keycloak on IIS using a reverse proxy. By following the steps outlined in this article, you should be able to successfully configure and troubleshoot your Keycloak instance behind the IIS reverse proxy.

Additional Resources

For more information on Keycloak and IIS, refer to the following resources:

Keycloak Documentation: Official Keycloak documentation.
IIS Documentation: Official IIS documentation.
ASP.NET Core Documentation: Official ASP.NET Core documentation.

By following the steps outlined in this article, you should be able to successfully configure and troubleshoot your Keycloak instance behind the IIS reverse proxy. If you have any questions or need further assistance, feel free to ask.