Este recurso diz para adicionar isso ao seu web.xml
<web-app>
...
<security-constraint>
<web-resource-collection>
<web-resource-name>Everything in the webapp</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
</security-constraint>
</web-app>