| Publisher | Hewlett-Packard | ||
|---|---|---|---|
| Format | 287.6KB PDF | Date added | 07 Jan 2007 |
| Topics | TCP - IP, Network Security, Denial of Service | ||
| Downloads | 152 | ||
Countering Distributed Denial of Service (DDoS) attacks is becoming ever more challenging with the vast resources and techniques increasingly available to attackers. This paper considers sophisticated attacks that are protocol-compliant, non-intrusive, and utilize legitimate application-layer requests to overwhelm system resources. The authors characterize application layer resource attacks as either request flooding, asymmetric, or repeated one-shot, on the basis of the application workload parameters that they exploit. To protect servers from these attacks, they propose a counter-mechanism that consists of suspicion assignment mechanism and a DDoS-resilient scheduler, DDoS Shield.
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