COMPUTER SYSTEM

摘要

PROBLEM TO BE SOLVED: To preliminarily prevent the leakage of information due to any unauthorized access to each computer of a computer system connected to an outside network. SOLUTION: A fire wall 14 connecting an inside network 13 to an outside network 11 includes a function 23 for monitoring and detecting any unauthorized access from the outside network side to each computer in the inside network by referring to the data base 21, a function 27 for judging and setting the validity/invalidity of the transfer of information from the outside network to each computer in the inside network according to the detected result for each computer, and a function 29 for transferring the outside information to each computer in the inside network based on the set result.