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:
Dec. 15, 2009
Filed:
Mar. 05, 2003
Ishai Ben Aroya, Haifa, IL;
Ishai Ben Aroya, Haifa, IL;
Microsoft Corporation, Redmond, WA (US);
Abstract
Systems and methods are described for using network address translation (NAT) for implementation of stateful routing. A firewall (or firewall server) filters communications between a first host and a second host at a firewall socket layer. Destination addresses for data packets coming into the firewall are translated to an internal (socket) address of the firewall. Source addresses for data packets sent from the firewall are translated to an address of the sending host. As a result, the receiving host sees the data packets as coming from the sending host. Translation rules applied during the communications are stored in a rules module and are applied to all packets having a particular source and a particular destination.