System.ServiceModel 4.0.0.0 System.Enum This enumeration defines the security modes that the supports. Specifies the different security modes for . Field 4.0.0.0 System.ServiceModel.WSDualHttpSecurityMode SOAP message-level security is used and the settings in the property become effective. Field 4.0.0.0 System.ServiceModel.WSDualHttpSecurityMode No security is used.