Community-based collaborative knowledge system, and user access limiting method in that system

摘要

A community server categorizes and accumulates messages exchanged by users on a virtual community for respective topics. The community server includes a user access limiting control unit. The user access limiting control unit determines user's access authority of each client terminal for each community as an access destination. For this purpose, the user access limiting control unit manages a community type indicating the open level of each community, and a member type indicating the participation attribute of each user to the virtual community, using community management information, and limits access to a community as an access destination for each client terminal on the basis of the combination of the community type and member type.