To avoid degradation of access performance and resource use efficiency when a multi-node system utilizing a resource-disaggregated architecture makes data access across nodes under the control of software and the like which are not compatible with the resource-disaggregated architecture, an access control unit 410-1 is a unit included in an access control system 2, wherein remote access from a first processor 420-1 to a second information processing resource 440-2 is made via first and second communication networks, and is equipped with: a determination part 411-1 for determining whether or not the access made by the first processor 420-1 is remote access; and an access conversion part 412-1 for converting, when the access is remote access, the remote access to local access by updating access destination management information 432-1 such that the second information processing resource is associated with a first information processing device.