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IEICE TRANSACTIONS on Information

Trustworthy DDoS Defense: Design, Proof of Concept Implementation and Testing

Mohamad Samir A. EID, Hitoshi AIDA

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Summary :

Distributed Denial of Service (DDoS) attacks based on HTTP and HTTPS (i.e., HTTP(S)-DDoS) are increasingly popular among attackers. Overlay-based mitigation solutions attract small and medium-sized enterprises mainly for their low cost and high scalability. However, conventional overlay-based solutions assume content inspection to remotely mitigate HTTP(S)-DDoS attacks, prompting trust concerns. This paper reports on a new overlay-based method which practically adds a third level of client identification (to conventional per-IP and per-connection). This enhanced identification enables remote mitigation of more complex HTTP(S)-DDoS categories without content inspection. A novel behavior-based reputation and penalty system is designed, then a simplified proof of concept prototype is implemented and deployed on DeterLab. Among several conducted experiments, two are presented in this paper representing a single-vector and a multi-vector complex HTTP(S)-DDoS attack scenarios (utilizing LOIC, Slowloris, and a custom-built attack tool for HTTPS-DDoS). Results show nearly 99.2% reduction in attack traffic and 100% chance of legitimate service. Yet, attack reduction decreases, and cost in service time (of a specified file) rises, temporarily during an approximately 2 minutes mitigation time. Collateral damage to non-attacking clients sharing an attack IP is measured in terms of a temporary extra service time. Only the added identification level was utilized for mitigation, while future work includes incorporating all three levels to mitigate switching and multi-request per connection attack categories.

Publication
IEICE TRANSACTIONS on Information Vol.E100-D No.8 pp.1738-1750
Publication Date
2017/08/01
Publicized
2017/05/18
Online ISSN
1745-1361
DOI
10.1587/transinf.2016ICP0024
Type of Manuscript
Special Section PAPER (Special Section on Information and Communication System Security)
Category
Internet Security

Authors

Mohamad Samir A. EID
  The University of Tokyo
Hitoshi AIDA
  The University of Tokyo

Keyword