# How should I configure my firewall settings?

Hummingbird uses several domains that are required for the application to function. If your users connect to Hummingbird through a firewall, this list will help you configure your network by allowing access to the listed addresses. Multipart file uploads need to be allowed for these URLs.

Production environments:

* [https://app.hummingbird.co/](https://app.hummingbird.co)
* <https://s3.us-west-2.amazonaws.com/hummingbird.transient-uploads.prod/>
* <https://s3.us-west-2.amazonaws.com/hummingbird.transient-responses.prod/>

Sandbox environments:

* [https://sandbox.hummingbird.co/](https://sandbox.hummingbird.co)
* <https://s3.us-west-2.amazonaws.com/hummingbird.transient-uploads.sandbox/>
* <https://s3.us-west-2.amazonaws.com/hummingbird.transient-responses.sandbox/>

{% hint style="info" %}
This list is subject to change. Please reach out to the Hummingbird team (<support@hummingbird.co>) for the most updated list.
{% endhint %}


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