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Seminar Presentation

on

PEER TO PEER NETWORKS

Under the Guidance ofMR. B. R. MANDRE

Submitted ByWANKHEDE YOGESH K.

DEPARTMENT OF COMPUTER ENGINEERING

S.S.V.P.S.s B.S. DEORE COLLEGE OF ENGINEERING, DHULE.

2003 - 2004

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1.INTRODUCTION

2.PEER-TO-PEER NETWORKS

3. P2P MODELS

4. GNUTELLA

5.FREENET

6.MOBILE P2P

7.P2P SECURITY

8.P2P APPLICATIONS

9.CONCLUSION

BIBLIOGRAPHY

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INTRODUCTION Introduction to P2P.

Workstations having equivalent capabilities &responsibilities.

Each node is both consumer & provider.

Offers opportunities for real time communication.

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Peer To Peer Networks

What is P2P?

Decentralized approach.

Each computer functions as client as

well as server.Definition of P2P by Webopodia.

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Peer To Peer Networks

P2P & Client/Server networks. Advantages and Disadvantages

of client/server networks.

Advantages and Disadvantagesof P2P networks.

P2P and client/server networks

Client/Server Network

P2P Network

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P2P Models

Five Models of P2P communication.

1. PureP2P:Two devices talk w/o

any central device.

2. P2P with simple Discovery server:Server used to discover location of

peers.

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P2P Models

P2P with Discovery & Lookup Server.

Server also functions as Lookupserver.

P2P with Discovery, Lookup &Content Server.

P2P model can be reduced back toclient/server model if we rely moreand more on the server.

Federated P2P

Recently evolved communicationmodel.

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Gnutella What is Gnutella?

Technical Overview of Gnutella v.4.

Runs over TCP/IP connection. Used in hybrid networks.

Gnutella Packets.

Message ID (16bytes)

Function ID (1byte)

TTL (1 byte) Hops (1 byte)Payload length(4 bytes)

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What is Freenet?

Completely distributed decentralized system.

Communication is handled at global level

Operates at application layer.

Main design goals.

Anonymity for both producer & consumer.

Efficient dynamic storage & routing info.

Decentralization of all network.

Freenet

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Freenet Freenet Architecture.

Basic model. Keys are passed from node to node & each node takes

decision for passing req.

Route vary acc. to key request.

Decrement hop-to-live limit. Assign pseudo-unique random identifier to each req.

Continue till satisfy the requests.

Advantages and Disadvantages of Freenet.

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MobileP2P Introduction.

Basic components ofarchitecture.

Peer to peer node.

Mobile proxy.

P2P wireless homecommunication.

Technologies.

Bluetooth.

Wireless LAN.

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P2P Security

Requirements Confidentiality, integrity & availability.

Factors like privacy,DRM & identity management.

Security advantages.Privacy

No central point of knowledge.

Web of trust.

Locality.

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P2P Applications

Important P2P applications. Content distribution for sharing files, photographs, medical

images etc.

Distributed search.

Collaborations for designing auto, planes etc.Home applications.

Other applications. Sever overlay.

First responder network.Self organizing network.

Ad-hoc networks.

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P2P Applications

Ideas for future.

Opportunities offered bi Internet2.

Enterprise space applications.

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Conclusion

P2P Technology is still evolving.

P2P will replace client/server model in near future. Perfectly fit to the home environment.

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ANY QUESTIONS?

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Thank You

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BIBLIOGRAPHY References

[Tommo Reti, Yki Kortesniemi and Mikko Vlimki, Broadcasting CommercialData on Mobile Peer-to-Peer Networks Tokyo Mobile Roundtable 2002.

Jari Sukanen, Peer-to-peer Communication, Helsinki University ofTechnology, Telecommunications Software and Multimedia Laboratory.

Takeshi Kato, A Platform and Applicationsfor Mobile Peer-to-PeerCommunications,Ericsson Research Torshamnsgatan 23, Kista SE-16480

Stockholm Sweden.

Web sites

http://www.peer-to-peerwg.org/

http://www.openp2p.com http://www.yahoo.com

http://www.peer-to-peerwg.org/http://www.openp2p.com/http://www.openp2p.com/http://www.openp2p.com/http://www.openp2p.com/http://www.peer-to-peerwg.org/http://www.peer-to-peerwg.org/http://www.peer-to-peerwg.org/http://www.peer-to-peerwg.org/http://www.peer-to-peerwg.org/