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:
Nov. 04, 2008
Filed:
Sep. 18, 2002
Michael L. Sullenberger, San Jose, CA (US);
Jan Vilhuber, San Luis Obispo, CA (US);
Michael L. Sullenberger, San Jose, CA (US);
Jan Vilhuber, San Luis Obispo, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A process is disclosed in which a security policy is associated with a virtual private network (VPN) interface at a first device, for example, a router. Input is received specifying an association of a VPN endpoint address to a corresponding routable network address of a second device. A message is issued to a security module at the first device, the message including the routable network address of the second device and the security policy. Encryption state information is generated for network traffic from the first device to the second device, based on the message. The process is applicable to a hub-and-spoke network architecture that utilizes a point-to-multipoint GRE tunnel and the IPsec protocol for security. The process is dynamic in that the encryption state is generated for traffic over a VPN link, in response to notification of a virtual address-to-real address mapping, i.e., the association. In an embodiment, the association is an NHRP mapping.