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:
Mar. 29, 2011
Filed:
May. 31, 2006
Shinsuke Suzuki, Fuchu, JP;
Takeshi Shibata, Yokohama, JP;
Hidemitsu Higuchi, Ebina, JP;
Takao Miyabe, Kawasaki, JP;
Shinsuke Suzuki, Fuchu, JP;
Takeshi Shibata, Yokohama, JP;
Hidemitsu Higuchi, Ebina, JP;
Takao Miyabe, Kawasaki, JP;
Alaxala Networks Corporation, Kanagawa, JP;
Abstract
Prior art quarantine networks were implemented by two methods, the IEEE802.1x method and the DHCP method, but these methods both have different problems. The problem with the IEEE802.1x method is that it is difficult to make the transition from an existing management framework. The problem with the DHCP method is that it is difficult to prevent attacks on the network itself, and to repeat client quarantine. The present invention implements client login authentication and client security status quarantine independently, and controls layer-2 connectivity based on the respective results. This permits quarantine using an existing management framework, as well as enhancing network protection by layer-2 connection control and permitting repeat quarantine of the client using the same IP address. Moreover, by incorporating other layer-2 connectivity control mechanisms, flexible layer-2 connectivity control outside the quarantine network can also be implemented.