Validate your DNS Settings for Lumu

Validate your DNS Settings

Now that you have already configured your DNS traffic to be routed through Lumu, check that your DNS connections are working as expected. Please note that this procedure is only valid when setting Lumu Gateways.

When you make changes to DNS settings, you may have cached results that affect service. Flush your DNS cache or restart your client's network interface to be sure that you’re receiving only the latest DNS results.

For information on how to flush your DNS cache for the most common operating systems, consult our FAQ for guidance.

Validating your configuration

You can validate your DNS configuration using different tools. The easiest way to validate is from a client browser, but you also have the option to validate using the Command Prompt.

From a browser

It is easy to confirm if your configuration is working as expected. Just open the following page in a client browser: https://start.lumu.io/

We recommend clearing the browser cache or using an incognito session when validating your configuration to make sure that you are not seeing cached results.

This web page will confirm if you are ready to take advantage of Lumu. Validate the possible outcomes of this page according to the following scenarios:

It’s time to illuminate!

If the configuration is correct, you should see the following page:

You are ready to use LumuFigure 1 - You are ready to use Lumu.
Savvy users may try to modify their DNS settings to circumvent Lumu. You can prevent this with firewall rules. For more information, see  Preventing Circumvention of Lumu with Firewall Rules

You are almost there

If you see the following page, please review your DNS configuration to make sure you have configured everything correctly.

Review your settingsFigure 2 - Review your settings.

From a Command Prompt

You also can validate your settings using the nslookup command from a command prompt:

nslookup activity.lumu.io
The command output will list which DNS server is being primarily used to resolve names. This address should match the DNS settings you configured (the Lumu DNS or your Lumu Virtual Appliance IP).
Check DNS from a command promptFigure 3 - Check DNS from a command prompt.

Need more help?

If you have trouble reaching the Lumu Welcome page or getting web pages to load,  please review your DNS configuration to make sure you have configured everything correctly. You may contact our support team for assistance.

Lumu Portal

After setting up Lumu, you will start receiving alerts and notifications regarding communication between your infrastructure and adversaries. Dedicate some time exploring the Lumu Portal to acquaint yourself with how Lumu will deliver conclusive evidence on your unique compromise levels.
        • Related Articles

        • Point your DNS to Lumu

          To start taking advantage of Lumu — depending on your deployment scenario — need to configure your devices to point all DNS requests to Lumu's DNS revolvers’ IP or your Virtual Appliance’s IP addresses, substituting the automatic DNS servers provided ...
        • Apple macOS

          Setting up a Lumu Gateway on a macOS device is the configuration recommended for testing purposes as we recommend you configure your server or your router to take the most advantage of the Lumu Continuous Compromise Assessment on your entire network. ...
        • Linux Desktop

          Setting up Lumu Gateway on a Linux client device is the configuration recommended for testing purposes as we recommend you configure your server or your router to take the most advantage of Lumu Continuous Compromise Assessment on your entire ...
        • Windows 10

          Setting up Lumu on a Windows client device is the configuration recommended for testing purposes as we recommend you configure your server or your router to take the most advantage of the Lumu Continuous Compromise Assessment on your entire network. ...
        • Windows Server

          In this guide, we will walk you through the DNS configuration process for a Windows Server. Setting up Lumu for Continuous Compromise Assessment on a server is the deployment recommended for enterprises with a DNS infrastructure where all the traffic ...