The roadwarrior carol sets up a connection to gateway moon.
carol uses the Extensible Authentication Protocol
in association with the Microsoft CHAP version 2 protocol
(EAP-MSCHAPV2) to authenticate against the gateway. This protocol is used
e.g. by the Windows 7 Agile VPN client.
In addition to her IKEv2 identity PH_IP_CAROL, roadwarrior carol
uses the EAP identy carol. Gateway moon additionally uses an RSA signature
to authenticate itself against carol.