The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
May. 18, 2006
Yoko Hashimoto, Kashiwa, JP;
Takahiro Fujishiro, Yokohama, JP;
Tadashi Kaji, Yokohama, JP;
Osamu Takata, Tokyo, JP;
Kazuyoshi Hoshino, Tokyo, JP;
Shinji Nakamura, Tokyo, JP;
Yoko Hashimoto, Kashiwa, JP;
Takahiro Fujishiro, Yokohama, JP;
Tadashi Kaji, Yokohama, JP;
Osamu Takata, Tokyo, JP;
Kazuyoshi Hoshino, Tokyo, JP;
Shinji Nakamura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an encryption communication using VPN technologies, a load on a VPN system becomes large if the number of communication terminals increases. When an external terminal accesses via an internal terminal an application server, processes become complicated because it is necessary to perform authentication at VPN and authentication at the application server. A management server is provided for managing external terminals, internal terminals and application servers. The management server authenticates each communication terminal and operates to establish an encryption communication path between communication terminals. Authentication of each terminal by the management server relies upon a validation server. When the external terminal performs encryption communication with the application server via the internal terminal, two encryption communication paths are established and used between the external terminal and internal terminal and between the internal terminal and application server.