Patent ID: 7784086

Claim:
A method to limit access to a secure personal network (SPN) for a device having SPN identification parameters, the method comprising the steps of: performing an initialization protocol for the device to generate a confirmation value according to a function having a predetermined parameter; receiving an Internet protocol (IP) packet of the device, the packet including the confirmation value; comparing the confirmation value to each of a plurality of predetermined confirmation values, where number of the predetermined confirmation values depends upon expected packet loss; determining to allow access to the SPN when the confirmation value matches one of the plurality of predetermined confirmation values; determining to drop the IP packet when the confirmation value does not match the at least one predetermined confirmation value, wherein the confirmation value and the predetermined confirmation value are generated by an algorithm selected from the group consisting of a pseudorandom number generator, a hash function and a one-time password; and generating the predetermined parameter having a different value after a period of time, where duration of the period of time is determined by an operating environment of the device.