Denial-of-Service%20Resilience%20in%20Peer-to-Peer%20File%20Sharing%20Systems

1
Denial-of-Service Resilience in Peer-to-Peer
File Sharing Systems

• Offense

2
Scope of Attacks

• File-Targeted DoS Attack
• Network-Targeted DoS Attack
• False Reply Attack
• Slow Node Attack
• Missing Client Side Attacks
• Malicious users query for all files
• Malicious users query for non-existing files

3
File-Targeted DoS Attacks

• Modeling Assumptions
• Query Response
• Node Advertise
• Resource Selection

4
File-Targeted DoS Attacks

• 3.1 Spreading the Pollution

5
File-Targeted DoS Attacks

• 3.2 Cooperation and Persistence

6
Network-Targeted DoS Attacks

• 4.2 Attacker Strategy
• Control Plane Attacks
• False Reply Attack
• Slow Node Attack
• Data Plane Attack Scenarios
• Corrupt Files
• Corrupt Data Blocks?

7
Network-Targeted DoS Attacks

• 4.2 Attacker Strategy
• Assumptions The attacker cannot respond to
  queries directly

8
Modeling Resilience to Network-Targeted Attacks

• Topology Assumptions
• Constant Topology in Simulations
• Dont Consider Other anti-DoS mechanisms inherent
  to Topologies

9
Modeling Resilience to Network-Targeted Attacks

• User Behavior Assumptions
• Blacklisting and Quarantining not considered
• File Chunking is standard in many systems But
  only briefly considered