You have an on-premises Enforce server and you want to connect it to your Cloud Detection Server via a device such as an F5 load balancer that can support passthrough SSL connections,

DLP does not currently support the inspection of SSL content between its Enforce management server and its Cloud Detection Service (CDS). We recognize that this is a valid use case that may be of interest to our customers. An Enhancement Request has been logged and we plan to monitor the demand for this feature and prioritize it against other feature requests.