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. 21, 2010
Filed:
Sep. 11, 2007
Sami Uskela, Helsinki, FI;
Hannu Jokinen, Otalampi, FI;
Sami Uskela, Helsinki, FI;
Hannu Jokinen, Otalampi, FI;
Nokia Corporation, Espoo, FI;
Abstract
In a packet radio network a packet data address is activated for a terminal for transmitting data packets between the terminal and an external network. Information on the activated packet data address is stored at least in the edge nodes of the network. To prevent spoofing, i.e., misrepresentation of sender data, the method and network node of the invention comprise checking in the node whether the source address of the packet transmitted from the terminal is the same as the packet data address used in the transmission of the packet or does the source address belong to a set of allowed packet data addresses. The packet is transmitted from the node towards the destination address only if the addresses are identical or the source address belongs to the set of allowed packet data addresses.