A display unit displays a configuration of a system in a display device. An implementation scheme configuration support unit provides a candidate of a security implementation scheme configurable for a component of the system and configures a security implementation scheme selected by a user to a component selected by a user. An associated function element configuration support unit provides a candidate of an associated function element configurable for a component of the system and configures an associated function element selected by a user to a component selected by a user. An evaluation unit determines whether or not the associated function element configured for the component of the system is appropriate based on a condition to determine appropriateness of the configuration of the certain associated function element. An output unit outputs a result of the determination by the associated function element evaluation unit.