Abstract: An authentication server (2) includes: an image obtaining unit (210) that obtains a captured image obtained by capturing authentication target person with position information indicating a captured position at which the authentication target person is captured; a face authentication unit (212) that authenticates the authentication target person by using a face image of the authentication target person in the captured image; a background comparison unit (214) that determines, based on the position information, expected background information related to background behind the authentication target person expected to be included in the captured image, and compares the expected background information and actual background information related to a background behind the authentication target person actually included in the captured image; and a communication apparatus (23) that outputs information indicating an authenticated result of the authentication target person and information indicating a compared result of t

Abstract: Provided is a server system, a collective server apparatus, and a MAC address management method that enables to change a MAC address and a flexible assignment of a MAC address. A server system according to the present invention includes a plurality of network control units that control communication performed with another device via a network, an address storage unit that stores a MAC address to be assigned to the network control unit, an assignment change processing unit that changes an assignment of the MAC address stored in the address storage unit and writes in the address storage unit, and an assignment execution unit that specifies the assignment stored in the address storage unit to each of the network control units.

Abstract: Provided is a server system, a collective server apparatus, and a MAC address management method that enables to change a MAC address and a flexible assignment of a MAC address. A server system according to the present invention includes a plurality of network control units that control communication performed with another device via a network, an address storage unit that stores a MAC address to be assigned to the network control unit, an assignment change processing unit that changes an assignment of the MAC address stored in the address storage unit and writes in the address storage unit, and an assignment execution unit that specifies the assignment stored in the address storage unit to each of the network control units.

Abstract: A file access processor, which accesses a storage unit storing a plurality of files therein based on an access request from a request source, according to the present invention has a mirroring relation storage unit in which mirroring relation information is stored, wherein the mirroring relation information includes a mirroring attribute value indicating whether or not each file is to be mirror-accessed and, when the file is to be mirror-accessed, mirroring file information indicating a mirroring file corresponding to the file; and a file access processing unit which references the mirroring relation information based on the access request and accesses the storage unit.

Abstract: A file access processor, which accesses a storage unit storing a plurality of files therein based on an access request from a request source, according to the present invention has a mirroring relation storage unit in which mirroring relation information is stored, wherein the mirroring relation information includes a mirroring attribute value indicating whether or not each file is to be mirror-accessed and, when the file is to be mirror-accessed, mirroring file information indicating a mirroring file corresponding to the file; and a file access processing unit which references the mirroring relation information based on the access request and accesses the storage unit.