Client Puzzle Approach for Improving Confidentiality

International Journal of Computer Trends and Technology (IJCTT)          
© - May Issue 2013 by IJCTT Journal
Volume-4 Issue-5                           
Year of Publication : 2013
Authors :Ms. Sapna, S. Khapre, Prof. Shrikant Ardhapurkar


Ms. Sapna, S. Khapre, Prof. Shrikant Ardhapurkar "Client Puzzle Approach for Improving Confidentiality "International Journal of Computer Trends and Technology (IJCTT),V4(5):1481-1484 May Issue 2013 .ISSN Published by Seventh Sense Research Group.

Abstract: - In present scenario, security of data or information is main concerned. Different defense strategies are developed to avoid DoS-Denial of Service attack, but they don’t provide optimal solution against DoS attack. Preventive mechanisms against flooding attacks can be effectively studied through game theory. This is mainly owing to the several trade-offs existing in a flooding attack defense scenario. For an attacker, there is a trade-off between the severity of his attack and the amount of resources he uses to do so; the more damage an attacker intends to cause, the more amounts of resources he should spend. For a defender, on the other hand, there is a trade-off between the effectiveness of his defense and the quality of service he provides for legitimate users; the more difficult it becomes to exhaust the defender’s resources, the more workload, and hence, less quality of service is imposed on legitimate users. To improve the quality of service for legitimate user and also to improve confidentiality, puzzle based defense technique is used. With the help of puzzle based system we can avoid DoS attack. .


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Keywords — Hierarchical clustering, document clustering, similarity measure