Denial-of-service threat gets IETF's attention

The Internet Engineering Task Force (IETF) last week launched a working group to develop ICMP Traceback Messages, which would let network managers discover the path that packets take through the Internet. Nicknamed itrace, the new working group plans to submit a proposed standard for traceback messages to the IETF leadership next January. Itrace can't prevent denial-of-service attacks. But it will be an important tool for network managers trying to isolate and stop these attacks. The itrace approach also can address denial-of-service attacks inside a far-flung corporate network built on Internet standards.

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