Practical Reverse Traceroute

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=U3iGwkKqsBU

Speakers: Ethan Katz-Bassett, University of Washington • Traceroute is the most widely used Internet diagnostic tool today. It is used to help identify routing failures, path inflation, and router misconfigurations. Researchers use it to map the Internet, predict performance, geolocate routers, and classify the performance of ISPs. However, traceroute has long had a fundamental limitation that affects all these applications: it does not provide the reverse path back from the destination to the source. Although various public traceroute servers across the Internet provide some visibility, no general method exists for determining a reverse path from an arbitrary destination, without control of that destination. • In recent work, we address this long standing limitation by building a reverse traceroute tool. Our tool provides the same information as traceroute, but for the reverse path, and it works in the same case as traceroute, when the user may lack control of the destination. Our approach combines a number of ideas: source spoofing, IP timestamp and record route options, and multiple vantage points. We have deployed our system on PlanetLab. In the median case our tool returns 87% of the hops seen by a traceroute of the same path. We use our reverse traceroute system to study previously unmeasurable aspects of the Internet, and I will present a case study of how a content provider could use our tool to troubleshoot poor performance. • See more at: https://www.nanog.org/meetings/nanog4...

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