as any internal HTTP service
fell back to a blocking-by-default behavior.
Because some ports, such as port 80, have HTTP services inside Istio by default,
prior to Istio 1.1.4 you couldn&rsquo;t call external services on any of those ports either.</div></aside></div><ol><li><p>To see this approach in action you need to ensure that your Istio installation is configured
with the <code>global.outboundTrafficPolicy.mode</code> option set to <code>ALLOW_ANY</code>. Unless you explicitly
set it to <code>REGISTRY_