 this case, this detail is not available, or needed, by the
mesh user. It&rsquo;s only available on the external cluster for the mesh operator to see.</p><h2 id=summary>Summary</h2><p>In this article, we used a <a href=https://github.com/istio-ecosystem/istioctl-proxy-sample>sample proxy server</a> to configure <code>istioctl</code> to
work with an <a href=/v1.21/docs/setup/install/external-controlplane/>external control plane installation</a>.
We&rsquo;ve seen how some of the <code>istioctl</code> CLI comm