adius</code></span></dt><dd><p>
          Authenticate using a RADIUS server. See <a class="xref" href="auth-radius.html" title="21.11. RADIUS Authentication">Section 21.11</a> for details.
         </p></dd><dt><span class="term"><code class="literal">cert</code></span></dt><dd><p>
          Authenticate using SSL client certificates. See
          <a class="xref" href="auth-cert.html" title="21.12. Certificate Authentication">Section 21.12</a> for details.
         </p></dd><dt><span class="term"><cod