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DDoS Defense Mechanism: Packet Marking

DDoS Defense Mechanism: Packet Marking. By Rod Lykins. Discussion Topics. Brief DDoS Introduction Packet Marking Overview Other DDoS Defense Mechanisms. Packet Marking Overview. Goal: I nsert traceback data into an IP header

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DDoS Defense Mechanism: Packet Marking

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  1. DDoSDefense Mechanism: Packet Marking By Rod Lykins

  2. Discussion Topics • Brief DDoS Introduction • Packet Marking Overview • Other DDoS Defense Mechanisms

  3. Packet Marking Overview • Goal: • Insert traceback data into an IP header • Mark packet from attack source to victim host at various routers • Attack source/path determined according to the traceback data • Two Types • Probabilistic (PPM) • Requires all routers along attack path to mark • Requires higher computation load, high false positive spoofed marking, more packets to rebuild source • Deterministic (DPM) • Marks only first ingress edge router • Much Simpler to implement • Typically utilizes a Bloom filter to store data • Important questions… • Maximum # packets needed to reconstruct a source • Maximum # of sources that can be identified

  4. IP Header Information

  5. Other DDoS Defense Mechanisms • Passive Defense • Over-Provisioning • Bandwidth Allocation • Roaming Honeypots • Active Defense • Ingress and Egress Filtering • IP Hopping

  6. Conclusion • Various approaches • Most require collective teamwork • Few can be handled by the victim alone • None are 100% effective

  7. References • A Taxonomy of DDoS Attack and DDoS Defense Mechanisms • IP Traceback with Deterministic Packet Marking • Flexible Deterministic Packet Marking: An IP Traceback System to Find the Real Source of Attacks • Topology-Assisted Deterministic Packet Marking for IP Traceback • Deterministic Packet Marking Based on the Coordination of Border Gateways • Modified Deterministic Packet Marking for DDoS Attack Traceback in IPv6 Network • Towards Stateless Single Packet IP Traceback • On the (In)Effectiveness of Probabilistic Marking for IP Traceback under DDoS Attacks • Linear and Remainder Packet Marking for Fast IP Traceback

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