My stunnel client must start without user intervention. So I installed stunnel in client mode in a Windows XP Home computer as XP service. In XP Proffesional I can specify that only Administrators group has access to stunnel directory. XP Home does not have security tab in folder properties. Any person working in XP Home compter can copy stunnel private key How to protect private key from copying ? Andrus. My stunnel.conf file: Cafile=server.crt cert=privkey.pem client = yes service=RDPClient verify = 2 [terminal server] accept = 83389 connect = 1.2.3.4:83389