he Envoy proxy to passthrough requests for unknown services.
Although this provides a convenient way to get started with Istio, configuring
stricter control is usually preferable.</p><p>This task shows you how to access external services in three different ways:</p><ol><li>Allow the Envoy proxy to pass requests through to services that are not configured inside the mesh.</li><li>Configure <a href=/v1.2/docs/reference/config/networking/v1alpha3/service-entry/>service entries</a> to provide controlled access 