Home

BBN Technologies has developed the Source Path Isolation Engine (SPIE), a hash-based technique for IP traceback that generates audit trails for traffic within a network. The audit trails are used to trace the origin of any single packet delivered by the network in the recent past. The goal of the project is to demonstrate that the SPIE system is effective, space efficient, and implementable in current or next-generation routing hardware.

The SPIE project is sponsored by the Defense Advanced Research Projects Agency (DARPA).