How to Access Internal URLs in On-Prem TestGrid Deployments

Overview

This guide explains the available methods for accessing local or internal URLs from TestGrid devices in an on-premise deployment environment.

Prerequisites

Before accessing internal URLs, ensure the following:

• The TestGrid server and devices have network connectivity.

• The internal URL is accessible from the TestGrid network.

• Administrative access is available to modify network settings, firewall rules, or proxy configurations if required.

Steps

Method 1: Configure Network Settings

Connect the devices to a network that has access to the internal URL.

Options

• Use a VPN to connect the device to the internal network.

• Set up a proxy server that routes traffic to the internal URL.

• Modify DNS settings to resolve the internal domain correctly.

Method 2: Modify Hosts File (For Rooted Android/Jailbroken iOS Devices)

If the device allows root access:

1. Modify the /etc/hosts file to point the internal URL to its IP address.

Example:

echo "192.168.1.10 internal.example.com" >> /etc/hosts

Caption: Update hosts file with internal URL mapping

2. Restart the browser or application to apply the changes.

Method 3: Use Local Tunnel (ngrok, SSH Tunnel, Cloudflare Tunnel)

ngrok

1. Install ngrok.

2. Expose the internal service using the following command:

ngrok http 8080

3. Use the generated public URL to access the internal service.

Cloudflare Tunnel

1. Configure a tunnel using cloudflared.

2. Use the generated tunnel endpoint to access internal resources.

Method 4: Configure Proxy (Charles Proxy, Burp Suite, Fiddler)

Use a proxy tool to route traffic to internal resources.

1. Set up Charles Proxy, Burp Suite, or Fiddler on a machine with internal access.

2. Configure the TestGrid device to use the proxy.

3. Ensure proxy rules allow access to internal resources.

Method 5: WebView or Custom Browser Testing

1. Modify the test script to load the internal URL using WebView.

Example:

WebView myWebView = findViewById(R.id.webview); myWebView.loadUrl("http://internal.example.com");

2. Use a browser that supports custom proxy settings if the default browser is restricted.

Method 6: Firewall Whitelisting & Static IP Access

1. Whitelist the TestGrid device static IP in firewall settings.

2. Ensure firewall rules allow traffic from TestGrid to the internal service.

Method 7: VPN Configuration for TestGrid Server

If the TestGrid server is not within the same network as the internal resource:

1. Connect the TestGrid server to a VPN that provides access to the internal URL.

2. Ensure connected devices inherit network settings from the server.

Verification Steps

Ping Test

Verify connectivity to the internal URL:

ping internal.example.com

Caption: Verify connectivity using ping

Browser Test

Open the internal URL in a mobile browser on the TestGrid device.

Caption: Verify internal URL access in browser

Automation Test

Run a test case that accesses the internal resource and verify successful execution.

Caption: Verify automation access to internal URL

Log Analysis

Review logs from TestGrid or proxy tools for connection failures.

Caption: Review logs for connectivity issues

Outcome

After completing these configurations:

• Internal URLs can be accessed successfully from TestGrid devices.

• Internal applications and services can be tested within the on-premise environment.

• Connectivity can be configured based on infrastructure and security requirements.

Still have a question?

Support Contact:
support@testgrid.io