| Publisher | Christian-Albrechts-Universitat zu Kiel | ||
|---|---|---|---|
| Format | 396.4KB PDF | Date added | 03 Feb 2006 |
| Topics | Network Security, Web Services, Denial of Service | ||
| Downloads | 44 | ||
Though Web Services become more and more popular, not only inside closed intranets but also for inter-enterprise communications, few efforts have been made so far to secure a Web Service's availability. Existing security standards like e.g. WS-Security only address message integrity and confidentiality, and user authentication and authorization. This paper presents a system for protecting Web Services from Denial-of-Service (DoS) attacks. DoS attacks often rely on misformed and/or overly long messages that engage a server in resource-consuming computations. Therefore, a suitable means to prevent such kinds of attacks is the full grammatical validation of messages by an application level gateway before forwarding them to the server.
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