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. 21, 2006
Filed:
Aug. 09, 2000
David N. Still, Santa Ana, CA (US);
Mingqi Deng, Mountain View, CA (US);
Thomas A. Roden, Irvine, CA (US);
David N. Still, Santa Ana, CA (US);
Mingqi Deng, Mountain View, CA (US);
Thomas A. Roden, Irvine, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method of securely communicating a network address of a client that issues service requests to a first server that proxies the service requests for a second server. A network address of the client is received. A processor determines whether a first network address of the first server is equal to a second network address of the second server. The network address of the client is sent from the first server to the second server in a secure request message only when the first network address of the first server is equal to the second network address of the second server. Accordingly, a secure communications protocol is provided in which an address of a requesting client, e.g., an IP address, is passed in the protocol only among a responding server and its proxy, thereby preventing interception of the client IP address by unauthorized processes. By enforcing a policy that permits the network address of an originating host to pass from a first server to a second server only when the network address of the second server meets specified criteria (e.g., it is the same network address as that of the first server), the originating host address can be passed securely through a proxy server.