System.ServiceModel 4.0.0.0 System.Enum This enumeration is referenced by , , and . Lists ways to validate in username/password mode. Field 4.0.0.0 System.ServiceModel.Security.UserNamePasswordValidationMode Custom authentication based on a configured custom . Field 4.0.0.0 System.ServiceModel.Security.UserNamePasswordValidationMode Provides password validation based on a configured . Field 4.0.0.0 System.ServiceModel.Security.UserNamePasswordValidationMode Usernames are mapped to Windows users.