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. 04, 2015
Filed:
Jul. 27, 2011
Tomoki Takazoe, Kanagawa, JP;
Tomoki Takazoe, Kanagawa, JP;
Abstract
A communication control apparatus () is connected to a router () and a terminal device (), and upon receiving prefix information transmitted from the router () by a router advertisement, stores the prefix information. In a case where prefix information of a transmission source address or a destination address, which is included in the received communication packet, is different from the stored prefix information, the communication control apparatus () blocks the communication packet, and in a case where the prefix information of the transmission source address or the destination address, which is included in the received communication packet, is the stored prefix information, the communication control apparatus () allows passing of the communication packet. In such a way, an unauthorized communication packet can be blocked appropriately under an IPv6 network environment.