Real estate trust management system to trust client connected through a network and real estate for operating or entered information associated with web page which may web server for providing; and said trust real estate for operating associated with having database where information is stored, said trust real estate for handling is connected to internal network of financial institution through internal network said real estate for operating said trust receives information associated with store the read control data into the database, web server and said firewall are respectively connected via said web server checks whether the requested information or transmitted searching in said database information received from the web server said storing said database includes relay server.