Fast and Fair Handling of Multimedia CAPTCHA Flows

Authors

  • Ageliki N Tsioliaridou Democritus University
  • Chi Zhang School of Computer Science, Florida International University, USA
  • Christos K Liaskos Aristotle University

DOI:

https://doi.org/10.3991/ijim.v9i4.4644

Keywords:

congestion control, VoIP, CAPTCHA, fairness, convergence speed

Abstract


Multimedia CAPTCHAs play a crucial role in bot filtering policies for VoIP applications. Network flows carrying CAPTCHA content have a very small lifespan and require high transmission quality, making for special handling at transport layer. The present study introduces an analysis-derived, rapidly converging control mechanism for CAPTCHA flows. Instead of relying on generic heuristics, the novel scheme enables the flows to estimate their deviation from the equilibrium and adapt to it in a single step. Simulations demonstrate the high efficiency and convergence speed of the scheme, highlighting its unique fitness for the appointed task.

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Published

2015-09-25

How to Cite

Tsioliaridou, A. N., Zhang, C., & Liaskos, C. K. (2015). Fast and Fair Handling of Multimedia CAPTCHA Flows. International Journal of Interactive Mobile Technologies (iJIM), 9(4), pp. 64–68. https://doi.org/10.3991/ijim.v9i4.4644

Issue

Vol. 9 No. 4 (2015)

Section

Short Papers

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