---
title: 1.4.1.2 Configure Web Client to Connect to Proxy
description: "The i2b2 Web Client is pre-configured to use the PHP proxy that is delivered with the i2b2 Web Client Software. The steps in this section will walk you through how to access the _connection configuration_file and change the proxy attributes.…"
url: "https://i2b2.org/docs/1-4-1-2-configure-web-client-to-connect-to-proxy/"
updated: "2026-09-15"
category: i2b2 Installation Guide / Chapter 5. Client Installation / 4. i2b2 Classic Web Client Install (optional) / 1.4 Configuration / 1.4.1 Proxy Configuration
---

# 1.4.1.2 Configure Web Client to Connect to Proxy

The i2b2 Web Client is pre-configured to use the PHP proxy that is delivered with the i2b2 Web Client Software. The steps in this section will walk you through how to access the _connection configuration_file and change the proxy attributes.

# Steps to update the Proxy information in i2b2_config_data.js

WARNING

Make sure you are editing the files in your **web server directory** and not the ones that reside in *YOUR_I2B2_WC_DIR*.

1. Go to the **web client folder** in your **web server directory**.

***Linux Example:***   /var/www/html

***Windows Example:***   C:\inetpub\wwwroot

2. Open the **i2b2_config_data.js** file to edit the proxy information.

  **i2b2_config_data.js**

Important

- The urlProxy must be changed for every deployment.
- It should be set to point to **your web proxy cell**. In all cases it must be the same base URL (hostname and port) as the website that is used to load the initial ***default.htm*** file into the browser.

3. Save the changes.