Disclosed herein are system, method and computer readable storage medium for enabling access control to be performed on messages received in a first-party (corporate) data center from a third-party (cloud) data center. Based on a received update request from an update service in the third-party (cloud) data center, an access control system (“ACL”) controller generates an ACL entry for enabling access to a first-party (corporate) data center from a system, within the third-party data center where a system configuration change was performed by a cloud platform. The ACL controller then transmits the ACL entry to one or more devices within the first-party data center, enabling access from the updated system hosted in the third-party data center.