> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xsoar-6-administrator-guide/6.12/onboard-cortex-xsoar/onboarding-in-cortex-xsoar/engines/configure-engines/edit-the-engine-configuration/configure-access-to-communication-tasks-through-an-engine.md).

# Configure Access to Communication Tasks through an Engine

You can use engines to enable users who do not have access to the Cortex XSOAR server to access the forms sent out in communication tasks. In such instances, the engine serves as a proxy and passes the information in the forms to the Cortex XSOAR server. To use your own certificate instead of the default self-signed certificate, [configure an engine to use custom certificates](/xsoar-6-administrator-guide/6.12/onboard-cortex-xsoar/onboarding-in-cortex-xsoar/engines/configure-engines/edit-the-engine-configuration/configure-an-engine-to-use-custom-certificates.md).

**Prerequisites**

Ensure that the **`BindAddress`** in the engine d1.conf file [is configured to a port](/xsoar-6-administrator-guide/6.12/onboard-cortex-xsoar/onboarding-in-cortex-xsoar/engines/configure-engines/edit-the-engine-configuration/common-properties-when-editing-an-engine-configuration.md) on which the engine can listen. The engine server address and the configured **`BindAddress`** are required to enable external users to communicate with the Cortex XSOAR server.

1. Navigate to Settings → About → **Troubleshooting**.
2. Click **Add Server Configuration**.

   | Key                                 | Value                                                                                        |
   | ----------------------------------- | -------------------------------------------------------------------------------------------- |
   | **`data.collection.external.link`** | The address (including the https prefix) of the engine used for external user communication. |
   | **`condition.ask.external.link`**   | The address (including the https prefix) of the engine used for external user communication. |
3. Click **Save**.


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