To provide a security control system for protecting contents from a Web, capable of improving the business efficiency by promoting the coordination of a complex communication in accompany with the transaction among organizations.

A rolling rights control part 223 determines the rolling rights, and limits an available function of the maintenance, and an accessing rights control part 224 determines the accessing rights for every contents, and permits or prohibits the reference of the contents to each user. Whereby the hardware and the software can be commonly used to be operated as an intranet, and the sub-intranet is defined inside to control the contact and isolation of the contents when the same groupware is operated as an intranet system among companies having business connection.