Validate your DNS Settings for Lumu

Validate your DNS Settings

After you have configured your DNS traffic to be routed through Lumu, check that your DNS connections are working as expected. Please note that this procedure will only produce valid results when setting up 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.
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