---
title: URL drilldown settings in Kibana
description: 
url: https://www.elastic.co/elastic/docs-builder/docs/3167/reference/kibana/configuration-reference/url-drilldown-settings
products:
  - Kibana
applies_to:
  - Self-managed Elastic deployments: Generally available
---

# URL drilldown settings in Kibana
Configure the URL drilldown settings in your `kibana.yml` configuration file.

## General settings
<definitions>
  <definition term="externalUrl.policy">
    <supported-on>Self-managed Elastic deployments: Generally available</supported-on>

Configures the external URL policies. URL drilldowns respect the global **External URL** service, which you can use to deny or allow external URLs. By default all external URLs are allowed.
Datatype: `string`

For example, to allow only external URLs to the `example.com` domain with the `https` scheme, except for the `danger.example.com` sub-domain, which is denied even when `https` scheme is used:
```yaml
externalUrl.policy:
  - allow: false
    host: danger.example.com
  - allow: true
    host: example.com
    protocol: https
```

  </definition>
</definitions>