| 摘要 |
PROBLEM TO BE SOLVED: To realize accounting, customer management and logging, and increase reliability for reliable file delivery. SOLUTION: An end user terminal 2 is connected to a network such as the Internet via a security device 1. The security device 1 has a pattern file for preventing unauthorized access and computer virus infection, and updates the pattern file regularly or irregularly. Management servers related to the pattern file update (accounting server 10, user management server 11, authentication server 12, version check server 13, security file supply server 14) are distributed in a closed network 3. COPYRIGHT: (C)2004,JPO&NCIPI |
