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Cloud Computing and P2P

Cloud Computing and P2P. A survey of compression techniques, security issues and improvements. Presentation Outline. Introduction and Overview Cloud C omputing and Security Cloud Computing and Compression P2P Security P2P Compression Conclusion. Cloud Computing Overview.

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Cloud Computing and P2P

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  1. Cloud Computing and P2P A survey of compression techniques, security issues and improvements

  2. Presentation Outline • Introduction and Overview • Cloud Computing and Security • Cloud Computing and Compression • P2P Security • P2P Compression • Conclusion

  3. Cloud Computing Overview • Computing as a service rather than a product. • Five Layer Model • Client • Application • Platform • Infrastructure • Server

  4. CLOUD COMPUTING SECURITY

  5. Mobile Cloud • Overview/Background • Using phone as cloud • Additional Security concerns • Lost/Stolen phone • Switching carriers, services • How much information gets shared (contact list, photos, etc)

  6. Provider Issues • Authentication Stop data loss/leakage • Must be active 24/7 • How to deal with backup/storage

  7. Where does the responsibility lie for transmission? • DDOS attacks • Must update regularly • Monitor user trends • Location, frequency of use

  8. Customer Issues • Only as secure as your password • Laws are applied to where the data is stored • Must trust company • How to deal with data not being accessible/down times

  9. CLOUD COMPUTING COMPRESSION

  10. Using Cloud Computing to enhance Video Compression • Map & Reduce Algorithm • Split & Merge Algorithm utilizing Cloud computing • CloudComputing vs. Investment in hardware • Cloud: Pay for what you use • Hardware invested in would have a lot of down time

  11. Content Provider uploads video

  12. Compression Occurs

  13. P2P Strengths • Peers provide resources to other peers. • Reduced cost for original distributor. • As demand increases so does the capacity of the system. • There is no single point of failure

  14. P2P Weaknesses • Harmful data can be distributed by malicious peers. • Difficult to moderate the content of the network. • Unpopular files will disappear as peers will not share them.

  15. P2P COMPUTING SECURITY

  16. What We Have

  17. The Challenges • Geographically distributed peers • Lack of centralized control • Many unknowns • Are the other peers worthy of your trust? • Are there involvements between peers? • Absence of accountability

  18. Challenges in identifying a malicious peer • Dynamism • Peers posing as other peers • Hard to monitor peers

  19. P2P for real life applications • Will users trust P2P systems for real life data sharing applications? • How many people would be willing to trust a peer they have no idea about? • Could the system be able reject un-trust worthy peers. • Users should be free to decide what they want to share, no restrictions from the application.

  20. Mobile Apps and P2P • Current P2P is used for sharing Music and Movies. • Could there be a better use for P2P • Social Networking on P2P • Users should be educated on P2P risks • Let users decide on risks

  21. P2P COMPUTING COMPRESSION

  22. -Multicast would be ideal but implementation is difficult -Run a program that creates Multicast but on the application layer -Common program for phones to do this is Skype, still working on video streaming

  23. Forward Error Correction -Redundancy is not always your enemy -Higher overhead and higher bandwidth needed

  24. Retransmission -More reliable than FEC -More delay than FEC which is undesirable in video streaming -More commonly used than FEC

  25. A new form of social interaction and file sharing

  26. Everyone is in the cloud network but people can interact one-on-one as well Different technology than traditional. Lokast is actually location based You can talk to people on the Oval that you've never met before

  27. Questions?

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