Patent 06643778 - Network system using a firewall dynamic control method > Summary

Patent No. US 06643778

Published on Nov 4, 2003

Application No. 09/280453

Filed on Mar 30, 1999

Priority Date -

Nakazawa, Osamu - Tokyo, JP

International:

H04L 9/00

National:2

713/201

709/223;

Field of Search 6

713/200

713/201;

709/203;

709/223;

709/230;

709/225-228;