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:
Jun. 26, 2012
Filed:
Jul. 13, 2005
Takashi Hirano, Tokyo, JP;
Atsushi Nunome, Kyoto, JP;
Hiroaki Hirata, Kyoto, JP;
Kiyoshi Shibayama, Kyoto, JP;
Takashi Hirano, Tokyo, JP;
Atsushi Nunome, Kyoto, JP;
Hiroaki Hirata, Kyoto, JP;
Kiyoshi Shibayama, Kyoto, JP;
NEC Corporation, Tokyo, JP;
Abstract
A DHCP serverdispenses an IP address in response to a request from a terminal equipment. An authentication serverreceives an authentication frame transmitted from the terminal equipmentusing the dispensed IP address as a sender address and authenticates the terminal equipment. Upon completion of authentication, the authentication serverinforms a registration information databaseof an authentication hubof communication permission for the terminal equipment. In the authentication hub, a frame receiving circuitreceives a transmission frame transmitted from the terminal equipment. The authentication hubrefers to the registration information databaseon the basis of sender information of the transmission frame, determines transmission, rewriting-and-transmission, or discarding for the frame, and sends the transmission frame to a transmission bufferif transmission or rewriting-and-transmission is permitted for the frame.