The roadwarrior <b>carol</b> sets up a connection to gateway <b>moon</b>.
<b>carol</b> uses the <i>Extensible Authentication Protocol</i>
in association with an  <i>MD5</i> challenge and response protocol
(<b>EAP-MD5</b>) to authenticate against the gateway. The user password
is kept in <b>ipsec.secrets</b> on both gateway and client 
Gateway <b>moon</b> additionally uses an <b>RSA signature</b> to authenticate itself
against <b>carol</b>.