Protocol solutions to location privacy in Mobile IPv6
Article by Yaly
The above solutions to location privacy involve utilizing Mobile IPv6 or deploying networks in particular ways that deny the correspondent node and an eavesdropper the ability to establish a correlation between the care-of address and the .
Without such a correlation, trafc analysis cannot be used at the network layer to track
the wireless terminal's location. The price for location privacy, however, is the lack of ability to do route optimization. This price may be too steep for some applications, for example real-time voice and multimedia, or for cases where the correspondent node and wireless terminal are in the same location, but the wireless terminal's home agent is on the other side of the world. The latency due to indirect routing through the home agent may be too long for good performance.
The route optimization signaling between the wireless terminal and correspondent node exposes the correlation between the and care-of address in two ways: when the binding moves from the to the care-of address and when it moves back again. In most cases, the route optimization signaling is sent in clear text, so the correlation between the and the care-of address is clearly visible to an eavesdropper. A proposal has been made for modications to the Mobile IPv6 protocol to allow route optimization but to remove the ability of an eavesdropper to establish a correlation between the care-of address and (Qiu, Zhao, and Koodli, 2007). The proposal contains the following approaches.
The route optimization signaling between the wireless terminal and correspondent node exposes the correlation between the and care-of address in two ways: when the binding moves from the to the care-of address and when it moves back again. In most cases, the route optimization signaling is sent in clear text, so the correlation between the and the care-of address is clearly visible to an eavesdropper. A proposal has been made for modications to the Mobile IPv6 protocol to allow route optimization but to remove the ability of an eavesdropper to establish a correlation between the care-of address and (Qiu, Zhao, and Koodli, 2007). The proposal contains the following approaches:
The above solutions to location privacy involve utilizing Mobile IPv6 or deploying networks in particular ways that deny the correspondent node and an eavesdropper the ability to establish a correlation between the care-of address and the .
Without such a correlation, trafc analysis cannot be used at the network layer to track
the wireless terminal's location. The price for location privacy, however, is the lack of ability to do route optimization. This price may be too steep for some applications, for example real-time voice and multimedia, or for cases where the correspondent node and wireless terminal are in the same location, but the wireless terminal's home agent is on the other side of the world. The latency due to indirect routing through the home agent may be too long for good performance.
The route optimization signaling between the wireless terminal and correspondent node exposes the correlation between the and care-of address in two ways: when the binding moves from the to the care-of address and when it moves back again. In most cases, the route optimization signaling is sent in clear text, so the correlation between the and the care-of address is clearly visible to an eavesdropper. A proposal has been made for modications to the Mobile IPv6 protocol to allow route optimization but to remove the ability of an eavesdropper to establish a correlation between the care-of address and (Qiu, Zhao, and Koodli, 2007). The proposal contains the following approaches.
The route optimization signaling between the wireless terminal and correspondent node exposes the correlation between the and care-of address in two ways: when the binding moves from the to the care-of address and when it moves back again. In most cases, the route optimization signaling is sent in clear text, so the correlation between the and the care-of address is clearly visible to an eavesdropper. A proposal has been made for modications to the Mobile IPv6 protocol to allow route optimization but to remove the ability of an eavesdropper to establish a correlation between the care-of address and (Qiu, Zhao, and Koodli, 2007). The proposal contains the following approaches:
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