URL drilldown settings in {{kib}} [url-drilldown-settings-kb]

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

$$$external-URL-policy$$$ externalUrl.policy : 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.

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
```