Efficient and Secure Source Authentication with Packet Passports

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Provided by: USEnet Live!
Topic: Security
Format: PDF
A key challenge in combating Denial of Service (DoS) attacks is to reliably identify attack sources from packet contents. If a source can be reliably identified, routers can stop an attack by filtering packets from the attack sources without causing collateral damage to legitimate traffic. This task is difficult because attackers may spoof arbitrary packet contents to hide their identities. This paper proposes a packet passport system to address this challenge. A packet passport efficiently and securely authenticates the source of a packet.
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