(WO201791255) A system and method for the randomization of packet headers is disclosed. A controller is used to provide random values, also referred to as nonces, that replace the source and destination addresses that typically appear in a packet header. The controller also provides routing rules to the switches and routers in the network that allow these devices to properly route packets, even though the source and destination addresses are not present. In some embodiments, network devices that support software-defined networking (SDN) are employed. The number of times that a particular nonce is used may be variable. In some embodiments, a nonce is used for exactly one packet header. In this way, packets may traverse a network using nonces in place of actual source and destination addresses. Because the nonces are changed periodically, detection of traffic patterns is made significantly more difficult.
(WO201791255) 1. A method of transmitting a packet from a source to a destination in a network comprising: replacing a source address and a destination address in the packet with a set of nonces prior to its transmission; transmitting the packet from the source; sending routing rules to a network device disposed in the network, the routing rules defining the operation of the network device with respect to the set of nonces; receiving the packet at the destination; and providing the destination with the source address and destination address that correspond to the set of nonces.
(WO201791255) LEGAL DETAILS FOR WO2017091255 Actual or expected expiration date=2019-04-21 Legal state=ALIVE Status=PENDING Event publication date=2016-08-23 Event code=WO/APP Event indicator=Pos Event type=Examination events Application details Application country=WO WOUS2016048117 Application date=2016-08-23 Standardized application number=2016WO-US48117 Event publication date=2017-06-01 Event code=WO/A2 Event type=Examination events International application published with declaration under Article 17 (2) (a) Publication country=WO Publication number=WO2017091255 Publication stage Code=A2 Publication date=2017-06-01 Standardized publication number=WO201791255 Event publication date=2017-07-20 Event code=WO/A3 Event indicator=Pos Event type=Examination events Later publication of ISR with revised front page Publication country=WO Publication number=WO2017091255 Publication stage Code=A3 Publication date=2017-07-20 Standardized publication number=WO201791255 LEGAL DETAILS FOR DESIGNATED STATE EP Actual or expected expiration date=2035-10-21 Legal state=ALIVE Status=PENDING Corresponding cc: Designated or member state=EP Corresponding appl: EP16869011 Event publication date=2017-07-26 Event code=WO/121 Event type=Designated states EP: The EPO has been informed by wipo that ep was designated in this application Corresponding cc: Designated or member state=EP