ARA-TS Plus server with filtering function can be integrated with Manager providing centralized management that can manage multiple ARA-TS Plus servers. ARA-TS Plus server is installed with TAP at the access link for traffic filtering that can provide not only a greater convenience during the installation but also the most reliable network operation. Manager provides convenient management when multiple ARA-TS Plus servers has to be managed by a single point of management. Manager provides filtering policy and system configuration for distributed ARA-TS Plus server and includes useful monitoring features which can check up-to-date operating and filtering status, and configuration history, etc.