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Title:
データ通信方法、データ通信システム、データ通信プログラム、およびデータ通信装置
Document Type and Number:
Japanese Patent JP3980564
Kind Code:
B2
Abstract:

To make compatible the security of data communication, an IPsec/IKE program and convenience of data communication depending upon seamless roaming.

An IKE cipher communication path which is parallel with an IPsec cipher communication path, is utilized to request a communication party to update the IPsec cipher communication path, using an IKE phase-2 protocol from a changed IP address if the IP address changes. At the side of the opposite party, negotiation of information required for said updating is performed by an IKE protocol, according to the request, as long as the identity of the request source can be confirmed from the identity with a conventional cookie, regardless of the IP address difference. Afterwards, an IPsec cipher communication path, according to the new address is created between both the communicators and the former communication path, is deleted.

COPYRIGHT: (C)2005,JPO&NCIPI


Inventors:
武仲 正彦
藤本 真吾
Application Number:
JP2004017664A
Publication Date:
September 26, 2007
Filing Date:
January 26, 2004
Export Citation:
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Assignee:
富士通株式会社
International Classes:
H04W40/34; H04L12/22; H04L12/70; H04L12/701; H04L29/08; H04W8/26; H04W12/06; H04W80/04
Domestic Patent References:
JP2002344443A
JP2001160828A
Foreign References:
Attorney, Agent or Firm:
酒井 昭徳