e, old protocol versions might be avoided for security reasons). This message is always fatal.</p>

</dd>
<dt id="IS-insufficient-security">&quot;IS&quot;/&quot;insufficient security&quot;</dt>
<dd>

<p>Returned instead of handshake_failure when a negotiation has failed specifically because the server requires ciphers more secure than those supported by the client. This message is always fatal.</p>

</dd>
<dt id="IE-internal-error">&quot;IE&quot;/&quot;internal error&quot;</dt>
<dd>

<p>An internal error un