Protecting TCP services from denial of service attacks

  • Authors:
  • Hikmat Farhat

  • Affiliations:
  • Notre Dame University, Zouk Mosbeh, Lebanon

  • Venue:
  • Proceedings of the 2006 SIGCOMM workshop on Large-scale attack defense
  • Year:
  • 2006

Quantified Score

Hi-index 0.00

Visualization

Abstract

In this paper, we present a scheme that protects legitimate traffic from the large volume of attackers packets during a DDoS attack. Legitimate packets can be recognized by the tokens they carry in the IP header. Obtaining a token does not require protocol additions or changes, rather it is automatically obtained when a TCP connection is established. We believe that the Implicit Token Scheme (ITS) has numerous advantages: (1) It is totally transparent to clients. (2) No new protocols or modification of existing ones is needed to implement ITS. (3) Operations required by intermediate routers are computationally not more intensive than a couple of addition operations which could be easily done at wire-speed. (4) Does not lead to false positives. (5) Can sustain server availability even during attacks involving hundreds of thousands of attackers.