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:
Jan. 31, 2006
Filed:
Dec. 28, 2001
Gregory Luptowski, Richardson, TX (US);
Patrick Sollee, Richardson, TX (US);
Anita Wadhwani, Dallas, TX (US);
Christopher Haun, Richardson, TX (US);
Deepashree Rugi, Richardson, TX (US);
Gregory Luptowski, Richardson, TX (US);
Patrick Sollee, Richardson, TX (US);
Anita Wadhwani, Dallas, TX (US);
Christopher Haun, Richardson, TX (US);
Deepashree Rugi, Richardson, TX (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
The present invention allows a client on a private network to determine changes in a public address, which is provided by an address translation device and used for communications on a public network. The client will receive messages over the private network from the public network via the address translation device. In the message, a copy of the public address is placed in a portion of the message. When the address translation device modifies the message such that the client's private address is used for delivery of the message to the client, the copy of the public address remains in the message. Upon receipt, the client will analyze the message to identify the public address and compare the public address with a previously known public address. If the public address provided in the message is different from the stored public address, the client can recognize that it has changed.