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:
Aug. 01, 2006
Filed:
Feb. 04, 2002
Hidenori Inouchi, Higashimurayama, JP;
Yukiko Takeda, Tokorozawa, JP;
Masaya Hayashi, Kawasaki, JP;
Keisuke Takeuchi, Yokohama, JP;
Takamitsu Senou, Kamiyabe, JP;
Hidenori Inouchi, Higashimurayama, JP;
Yukiko Takeda, Tokorozawa, JP;
Masaya Hayashi, Kawasaki, JP;
Keisuke Takeuchi, Yokohama, JP;
Takamitsu Senou, Kamiyabe, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A translator includes a unit for communication with a DNS-ALG. The DNS-ALG detects a DNS query to a destination terminal, and performs once translation to IPv6. The DNS-ALG translates a destination temporary IPv6 address, in which a real address of IPv4 acquired from a DNS server of the destination terminal is added with a virtual IPv6 prefix, to a destination temporary IPv4. The IPv6-based DNS-ALG cooperates with the translator to permit alleviation of processing load on the DNS-ALG and reduction in capacity of a translation table of large capacity. A technique is disclosed which, with the above construction, can permit mutual connection among a plurality of VPN's without exchanging the existing VPN's.