d><a href='#xds-auth'><code>XDS_AUTH</code></a></td>
<td>Boolean</td>
<td><code>true</code></td>
<td>If true, will authenticate XDS clients.</td>
</tr>
<tr id='xds-auth-plaintext'>
<td><a href='#xds-auth-plaintext'><code>XDS_AUTH_PLAINTEXT</code></a></td>
<td>Boolean</td>
<td><code>false</code></td>
<td>authenticate plain text requests - used if Istiod is running on a secure/trusted network</td>
</tr>
</tbody>
</table>
<h2 id="metrics">Exported metrics</h2>
<table class="metrics">
<thead>
<tr><th>Metric Nam