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An active security protocol against DoS attacks

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4 Author(s)
Cotroneo, D. ; Univ. of Napoli "Federico II", Italy ; Peluso, L. ; Romano, S.P. ; Ventre, G.

Denial of service (DoS) attacks represent, in today's Internet, one of the most complex issues to address. A session is under a DoS attack if it cannot achieve its intended throughput due to the misbehavior of other sessions. Many research studies dealt with DoS, proposing models and/or architectures mostly based on an attack prevention approach. Prevention techniques lead to different models, each suitable for a single type of misbehavior, but do not guarantee the protection of a system from a more general DoS attack. We analyze the fundamental requirements to be satisfied in order to protect hosts and routers from any form of distributed DoS (DDoS). Then we propose a network signaling protocol, named active security protocol(ASP), which satisfies most of the defined requirements. ASP provides an active protection from a DDoS attack, being able to adapt its defense strategies to the current type of violation. Protocol specification and design are performed using an object oriented methodology: we used Unified Modeling Language (UML) as a software description language.

Published in:

Computers and Communications, 2002. Proceedings. ISCC 2002. Seventh International Symposium on

Date of Conference:

2002