h2 id=configure-an-ingress-gateway>Configure an ingress gateway</h2><ol><li><p>Define an ingress gateway with a <code>servers:</code> section configuring the <code>80</code> and <code>443</code> ports.
Ensure <code>mode:</code> is set to <code>PASSTHROUGH</code> for <code>tls:</code> in the port <code>443</code>, which instructs the gateway to pass the
ingress traffic AS IS, without terminating TLS.</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl apply -f - &lt;&lt;EOF
apiV