FILE DELIVERY SYSTEM, FILE DELIVERY METHOD AND FILE DELIVERY PROGRAM

摘要

PROBLEM TO BE SOLVED: To simplify terminal setting and reduce traffic at update of an anti-computer-virus pattern file. SOLUTION: Caches and reverse proxies are set between a cache server 10 and a safety authentication server 11 and between a file supply server 12 and a master server 13. A security device 1 only accesses the single cache server 10 in each base to access the plurality of upper servers (cache server 10, safety authentication server 11, file supply server 12, master server 13) without considering a prefectural district. Without increase of traffic, the latest pattern file can be acquired without delay. COPYRIGHT: (C)2004,JPO&NCIPI