Internet Protocol (IP) traceback has attracted attention as a technology for coping with denial of service, distributed denial of service, and connection laundering attacks. IP traceback is the generic term for the technology, which determines the true source of attacking packets. Toshiba has proposed a "hybrid traceback" system that combines two types of IP traceback schemes: active and passive. This system is able to reflect the tracer's intention and achieve detailed tracing with a lower load on the network than conventional schemes.
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