        protocol: TCP
                    address: &quot;internal.org.net&quot;
                    port_value: 8888
</code></pre>
<p>The following example overwrites certain fields (HTTP idle timeout
and X-Forward-For trusted hops) in the HTTP connection manager in a
listener on the ingress gateway in istio-system namespace for the
SNI host app.example.com:</p>
<pre><code class="language-yaml">apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  name: hcm-tweaks
  namespace: istio-system
