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:
Oct. 23, 2012
Filed:
Mar. 20, 2009
Johan Kolhi, Vaxholm, SE;
Christian Gotare, Getinge, SE;
Tomas Thyni, Jarfalla, SE;
Annikki Welin, Solna, SE;
Johan Kolhi, Vaxholm, SE;
Christian Gotare, Getinge, SE;
Tomas Thyni, Jarfalla, SE;
Annikki Welin, Solna, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Method and arrangement for obtaining unambiguous addressing for data packets communicated between devices in two different local networks using private IP address spaces. A VPN tunnel is initially established between gateways in the two local networks and an internal IP address space is defined in each network for devices in the opposite network, not overlapping with an internal IP address space used for its own devices. When the gateway of one network receives a data packet from a device in the opposite network, the packet's header is modified by changing the destination and source addresses, which belong to address spaces valid in the opposite network, into addresses belonging to address spaces valid in the present network.