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:
Sep. 22, 2009
Filed:
Sep. 15, 2004
Francois Audet, Santa Clara, CA (US);
Cedric Aoun, Boulogne Billancourt, FR;
Francois Audet, Santa Clara, CA (US);
Cedric Aoun, Boulogne Billancourt, FR;
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
A method and system for enabling firewall traversal of media communications from a client device. The firewall infers authentication or validation of the client device based upon communications between the client device and a device controller known to the firewall. The firewall monitors packets sent from the device controller to the client device. If the device controller sends packets to the client device for a sufficiently long period of time and with sufficient frequency, or if the packets are of a certain type, then the firewall deems the client device to be validated and permits the client device to send data packets through the firewall. The device controller may include a media gateway controller, a port discovery server, or similar such device controllers. The device controller and client device communicate based upon a protocol, which need not be understood by the firewall.