At&t Wireless Services, Inc.

At&t Wireless Svcs. Inc.

Cingular Wireless Ii, LLC

Leslie Dale Owens

Arturo Maria

Brian Kevin Daly

A dedicated data packet filtering processor whose only function is to filter data packets based on a list of source IP addresses stored in high-speed memory of the processor. The processor has a specialized operating system which controls the operation of the processor. The processor examines the source IP address of each received data packet to determine if the source IP address matches one of the stored source IP addresses, and if there is a match, either discards or forwards the data packet depending on the processor configuration. The list of source IP addresses are updated by a service provider having a central administrative site. The service provider keeps these lists up to data and periodically updates the source IP addresses stored in the random access memory of the dedicated IP filtering processors.

Method and apparatus for filtering packets using a dedicated processor

Method and apparatus for updating address lists for a packet filter

Apparatus for filtering packets using a dedicated processor

A set of Diffie-Hellman data encryption values is generated prior to receiving a request for the data encryption values. The data encryption values are then stored in a database. The generating and storing steps are performed repeatedly thus creating a stored table of data encryption values in the database. When a new user calls to activate a mobile station, a cellular network can select from among precalculated Diffie-Hellman data encryption values immediately transmit the values to the mobile station.

Generation of encryption key

A mutual authentication process assures that a subscriber does not provide sensitive activation information to an imposter network and a network does not provide sensitive activation information to an imposter subscriber. The mutual authentication is facilitated by a pair of passwords that are communicated between the activation center of the network and the subscriber via a secure channel.

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Issaquah, WA, United States of America

Leslie Dale Owens