SDN-Assisted Slow HTTP DDoS Attack Defense Method

Kiwon Hong, Youngjun Kim, Hyungoo Choi, Jinwoo Park

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)


A Slow HTTP distributed denial of service (DDoS) attack causes a Web server to be unavailable, but it is difficult to detect in a network, because its traffic patterns are similar to those of legitimate clients. In this letter, we propose a network-based Slow HTTP DDoS attack defense method, which is assisted by a software-defined network that can detect and mitigate Slow HTTP DDoS attacks in the network. Simulation results show that the proposed Slow HTTP DDoS attack defense method successfully protects Web servers against Slow HTTP DDoS attacks.

Original languageEnglish
Pages (from-to)688-691
Number of pages4
JournalIEEE Communications Letters
Issue number4
Publication statusPublished - 2018 Apr

Bibliographical note

Funding Information:
Manuscript received September 25, 2017; accepted October 20, 2017. Date of publication October 26, 2017; date of current version April 7, 2018. This work was supported by Institute for Information & communications Technology Promotion(IITP) grant funded by the Korea government (MSIT) (No. 2013-0-00405, Development of Device Collaborative Giga-Level Smart Cloudlet Technology). The associate editor coordinating the review of this paper and approving it for publication was L. Galluccio. (Corresponding author: Jinwoo Park.) The authors are with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail:;;; Digital Object Identifier 10.1109/LCOMM.2017.2766636

Publisher Copyright:
© 1997-2012 IEEE.


  • Distributed denial of service (DDoS)
  • slow HTTP DDoS
  • software-defined networking (SDN)

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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