The main data source in this integration, The "IFS Report Data Service Web services" is protected by basic authentication of the IFS Middleware server. Access to IFS Results are controlled by one time Token mechanism. A token is generated in the start of the SSRS request process and its passed along with the SSRS formatting request to be used by the IFS Report Data Service Extension to authorize against the IFS web service that retrieves data. The whole Security token mechanism is built in to the SSRS integration and not specifically visible to outside and it doesn't require any configuration to be done.