# Installation To enable RAS REST API in a RAS Farm, you need to install the RAS Web Administration Service. It can be installed on the RAS Connection Broker server or any other server. If you install the service on a separate server, you will need to change its configuration (after the installation) to point to RAS Connection Broker. By default, the configuration points to "localhost". {% hint style="info" %} **Note:** If you've already configured and are using Parallels RAS Management Portal, you may skip this step because you should already have the RAS Web Administration Service installed. {% endhint %} To install RAS Web Administration Service: 1. Run the Parallels RAS installer on the RAS Connection Broker or any other server. 2. On the **Select Installation Type** page, select **Custom**. 3. On the next page, select to install the **Parallels RAS Web Administration Service** component. 4. Click **Next** and follow the onscreen instructions. ### **Configure RAS Web Administration Service** If the RAS Web Administration Service was installed on a separate server, you need to modify its configuration and specify the RAS Connection Broker server address. You may also want to change the port number and certificate information in the same configuration file. For details about configuring RAS Web Administration Service, please refer to KB article . When modifying the service configuration, please note the following: * In the configuration JSON file, the RAS Connection Broker address is specified using the "LicenseServer" parameter. * The default HTTPS port number is set to 20443. This number is chosen not to conflict with RAS Secure Gateway ports. You can change it to 443 (if possible), so when opening the portal, you don't have to include the port in the URL. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.parallels.com/landing/ras-admin-guide/v19-en-us/parallels-ras-19-administrators-guide/parallels-ras-apis/ras-rest-api/installation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.