Http tunneling on OpenJMS 0.7.7

Hi

I have compiled openjms version 0.7.7 and am trying to use the http 
tunneling.
I have started the openjms server and intalled the openjms-tunnel 
application in Tomcat 5.

I try to connect to the server and get an security error
org.exolab.jms.net.connector.SecurityException: Connection refused

What can be the problem?
Must I use https or is it possible to use the tunnel with http?

Thanks
Edi

The configuration of the server is

============================================================

<?xml version="1.0"?>

<Configuration>

<ServerConfiguration host="myPC" embeddedJNDI="true"/>

 
  <!-- Required when using an HTTP connector -->
  <Connectors>
    <Connector scheme="http">
      <ConnectionFactories>
        <QueueConnectionFactory name="tj2077QueueConnectionFactory" />
        <TopicConnectionFactory name="tj2077TopicConnectionFactory" />
      </ConnectionFactories>
    </Connector>
  </Connectors>

  <HttpConfiguration host="myPC"
  webServerPort="80"
  port="3030"
  servlet="/openjms-tunnel/tunnel"
  />

  <!-- Required  -->
  <DatabaseConfiguration>
    <RdbmsDatabaseConfiguration
      driver="org.gjt.mm.mysql.Driver"
      url="jdbc:mysql://DBHOST/openjms077"
      user="openjms"
      password="openjms"
      evictionInterval="3600"
      testQuery="select current_date"/>
  </DatabaseConfiguration>
 
    <GarbageCollectionConfiguration memoryCheckInterval="60"
                                  lowWaterThreshold="20"
                                  garbageCollectionInterval="600"
                                  garbageCollectionThreadPriority="5"/>
 
  <!-- Required -->   
  <AdminConfiguration script="${openjms.home}\bin\startup.bat" />
   
  <!-- Optional. If not specified, no destinations will be created -->
  <AdministeredDestinations>
    <AdministeredTopic name="TA">
    </AdministeredTopic>
    </AdministeredTopic>
 
  </AdministeredDestinations>

  <SecurityConfiguration securityEnabled="true"/>
  <!-- Optional. If not specified, no users will be created -->
  <Users>
    <User name="admin" password="openjms" />
  </Users>

</Configuration>

begin:vcard
fn:Edilberto Sanchez
n:Sanchez;Edilberto
org;quoted-printable:Asociaci=C3=B3n EURATOM-CIEMAT para Fusion;Laboratorio Nacional de Fusion
adr:;;Avda. Complutense 22;Madrid;;28040;SPAIN
email;internet:[email protected]
tel;work:+34 91 346 63 17
x-mozilla-html:TRUE
url:http://www-fusion.ciemat.es
version:2.1
end:vcard