ction can
be initiated (mTLS or standard TLS). This is controlled using the TLS mode setting in the <code>trafficPolicy</code> of a
<a href=/v1.21/docs/reference/config/networking/destination-rule/><code>DestinationRule</code> resource</a>.
A mode setting of <code>DISABLE</code> will send plaintext, while <code>SIMPLE</code>, <code>MUTUAL</code>, and <code>ISTIO_MUTUAL</code> will originate a TLS connection.</p></li></ol><p>The key takeaways are:</p><ul><li><code>PeerAuthentication</code> is used to configu