1. Peer-to-Peer Internet Networks
Steve Staten, Cevdet Bulut, Seth Raleigh

2. Peer-to-Peer Networks
Created when two or more PCs are connected and share resources without going through a separate server computer
Examples: File sharing, telephony, media streaming, discussion forums

3. Pure P2P No centralized server
Control and data are completely distributed
Every node is a peer
Examples: Gnutella, Freenet, KaZaA

4. Hybrid P2P Centralized server provides data
Communication is directly between peers
Example: Napster

5. Advantages
Scalable – system that can adapt easily to increased demands
Everyone brings their own resources
Robust
No central bottleneck
No central point of failure

6. Advantages Less server dependent Reduce Overhead Costs Open
multiple source
The exact opposite of FTP (single source, single server)

7. Disadvantages
Ease of copyright violations
Viruses/Spyware

8. Business
Over 200 companies have invested over $400 million in P2P networks
Potential Applications:
Search engines
E-commerce
Joost

9. Questions???