SECURITY SYSTEM

摘要

PURPOSE: A security system is provided to protect a previously connected session or a new session even an error occurred in a data transmission control unit. CONSTITUTION: A proxy ACL(Access Control List) part(220) establishes a destination address of a data packet to a database management system server(300). A transmission control unit(230) generates an allow signal or a command data with a cutoff signal. If the command data has an allowance signal, a transmission waiting line unit(240) transmits the data packet to the database management system server.