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. 27, 2019
Filed:
Dec. 19, 2017
Applicant:
Alaxala Networks Corporation, Kawasaki-shi, Kanagawa, JP;
Inventor:
Keigo Uchizumi, Kawasaki, JP;
Assignee:
Alaxala Networks Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/741 (2013.01); H04L 29/12 (2006.01);
U.S. Cl.
CPC ...
H04L 45/74 (2013.01); H04L 61/103 (2013.01); H04L 61/2015 (2013.01); H04L 61/6022 (2013.01);
Abstract
A packet relay device automatically generates a whitelist including an authorized communication rule. The packet relay device snoops on communications between a DHCP server and a DHCP client in accordance with DHCP. When the IP address of a DHCP client is changed, the packet relay device also automatically changes IP address information included in a whitelist related to the DHCP client to IP address information newly allocated to the DHCP client.