To ensure security without increasing a user's burden.

Based on a security table stored in a security table storage part 10, an access request to a resource of a management object (step S1), and when the access request is detected, it is collated whether or not the state of a computer at that time is matched to a permitting condition (step S2). Only when the state of the computer is matched to the permitting condition as the result of collation, the permission of the access request is determined (step S3). In this way, the security management is carried out based on the security table consisting of the resource of the management object and the permitting condition with the set computer state for permitting the access request to the resource.