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» Self-optimization of secure web services
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TELSYS
2010
154views more  TELSYS 2010»
13 years 3 months ago
Blocking attacks on SIP VoIP proxies caused by external processing
As Voice over IP (VoIP) applications become increasingly popular, they are more and more facing security challenges that have not been present in the traditional Public Switched Te...
Ge Zhang, Simone Fischer-Hübner, Sven Ehlert
BPM
2006
Springer
149views Business» more  BPM 2006»
13 years 10 months ago
Verifying BPEL Workflows Under Authorisation Constraints
Abstract. Business Process Execution Language (BPEL), or Web Services BPEL (WS-BPEL), is the standard for specifying workflow process definition using web services. Research on for...
Zhao Xiangpeng, Antonio Cerone, Padmanabhan Krishn...
ICSOC
2004
Springer
14 years 2 months ago
An OGSA-based accounting system for allocation enforcement across HPC centers
In this paper, we present an Open Grid Services Architecture (OGSA)-based decentralized allocation enforcement system, developed with an emphasis on a consistent data model and ea...
Thomas Sandholm, Peter Gardfjäll, Erik Elmrot...
CCS
2003
ACM
14 years 1 months ago
Using graphic turing tests to counter automated DDoS attacks against web servers
We present WebSOS, a novel overlay-based architecture that provides guaranteed access to a web server that is targeted by a denial of service (DoS) attack. Our approach exploits t...
William G. Morein, Angelos Stavrou, Debra L. Cook,...
CMS
2003
120views Communications» more  CMS 2003»
13 years 10 months ago
Extending the SDSI / SPKI Model through Federation Webs
Classic security systems use a trust model centered in the authentication procedure, which depends on a naming service. Even when using a Public Key Infrastructure as X.509, such s...
Altair Olivo Santin, Joni da Silva Fraga, Carlos M...