Profiling-By-Association: a resilient traffic profiling solution for the internet backbone

  • Authors:
  • Marios Iliofotou;Brian Gallagher;Tina Eliassi-Rad;Guowu Xie;Michalis Faloutsos

  • Affiliations:
  • UC Riverside;Lawrence Livermore Lab;Rutgers University;UC Riverside;UC Riverside

  • Venue:
  • Proceedings of the 6th International COnference
  • Year:
  • 2010

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Abstract

Profiling Internet backbone traffic is becoming an increasingly hard problem since users and applications are avoiding detection using traffic obfuscation and encryption. The key question addressed here is: Is it possible to profile traffic at the backbone without relying on its packet and flow level information, which can be obfuscated? We propose a novel approach, called Profiling-By-Association (PBA), that uses only the IP-to-IP communication graph and information about some applications used by few IP-hosts (a.k.a. seeds). The key insight is that IP-hosts tend to communicate more frequently with hosts involved in the same application forming communities (or clusters). Profiling few members within a cluster can "give away" the whole community. Following our approach, we develop different algorithms to profile Internet traffic and evaluate them on real-traces from four large backbone networks. We show that PBA's accuracy is on average around 90% with knowledge of only 1% of all the hosts in a given data set and its runtime is on the order of minutes (≈ 5).