1. Final Presentation 4/21/2010 By Guofu Xiong, Yuli Deng

2. Outline  Project Goal  Roadmap  System Configuration  Technical Solutions  Demo  Summary

3. Project Goal  Build a demonstrative system to study the concept of Cloud-Based Anti-Virus  Learn the Cloud-Based Anti-Virus pros and cons  Complete deploying the system  Integrate the SSE into our project to enable the white/black list function

4. Roadmap Tasks \ TimeBy 2/13By 2/20By 3/1By 3/11By 4/3By 4/15By 4/21 Task 1 : Preparation Task 2 : Setting environment Task 3 : Self- Developed program Task 4 : AntiVirus Proxy Task 5 : Test and deploy

5. System Configuration  Hardware  2 virtual machines running on the mobicloud.  Software  Ubuntu 10.10  HAVP  Squid3  C-ICAP  Clamav scan engine with its library  AVG scan engine  CURL library

6. Technical Solutions 1. Client software + Server side code + 3 rd party cloud scan engines 2. (Anti-virus proxy) Squid + C-ICAP + Clamav 3. (Anti-virus proxy) HAVP + Clamav & AVG 4. (Anti-virus proxy) Squid + C-ICAP & SSE + HAVP + Clamav & AVG

7. Solution 1 : Workflow Features:  A simple server utilizes current online Cloud AV engines (Symantec, Trend,..)  An windows client program  C++ is expected to be used for coding Steps: (1)User enters a URL; (2)Agent sends the URL to the server; (3) Server downloads the target file and send it to the 3 rd party scan engines; (4) Scan engines return result; (5) Server sends result to the user agent; (6) User agent decides action.

8. Solution 1 : Pros and Cons Pros:  Workflow is simple, easy to develop and deploy. Cons:  The process of transferring a file from the server to the 3 rd party scan engines is time- consuming.  Hard to retrieve various types of URL address from mobile phone and download them.

9. Solution 2 : Workflow Steps: (1)User browsed/download the URL in their agent; (2)User agent sends requests to Internet through squid proxy; (3)Squid gets data from the Internet, C-ICAP gets them and hands to scan clamav; (4)Clamav reports result; (5)Squid reports results to the users. *.This solution is first implemented by Zhibin, Xinyi and Tianyi

10. Solution 2 : Pro and Cons Pros:  Able to utilize anti-virus scan engine and black/white function at the same time.  Effective.  Easy for end users to configure. Cons:  Unable to utilize different scan engines at the same time. (Only Clamav is used).  Buffered data in squid will not be scanned if users try to access this data again in some conditions.

11. Solution 3 : Workflow Steps: (1)User browses/downloads a URL in their agent; (2)User agent sends requests through proxy (user-> HAVP -> Internet); (3)HAVP receives data from the Internet and sends them to scan engines; (4)HAVP sends data to the user at the same time but holds the end section of data; (5)If scan engines report virus, stop sending data to client and report to the user.

12. Solution 3 : Pros and Cons Pros:  Efficient, almost no delay in user browsing.  Able to utilize different scans engines at the same time.  Easy for users to configure. Cons:  Can’t integrate SSE.  Can’t buffer internet traffic.  Weaknesses in HAVP: File bigger than “hold back data” would be ignored by HAVP.

13. Final Solution : Workflow Steps: (1)User browses/downloads a URL in their agent; (2)User agent sends requests through proxy (user -> Squid -> HAVP -> Internet); (3)C-ICAP gets the URL and send to SSE, if phishing, send back result; (4)HAVP receives data from the Internet and send them to scan engines; (5)HAVP sends data to the user at the same time but holds the end section of data; (6)If scan engines report virus, stop sending data to client and report to the user.

14. Final Solution : Pros and Cons Pros:  Utilized various kinds of scan engines.  Enabled the white/black list function with SSE.  Squid(with its components) and HAVP(with its components) can be located in different machines.  Easy for end users to configure.  Enable to buffer data to increase the speed. Cons:  The scan/filter procedure decreases the speed of browsing and downloading. (The speed is most affected by the slowest component)  HAVP has weaknesses (Addressed before).  Buffered data in squid will not be scanned if accessed by users in some conditions.

15. Demo Time

16. Summary  Cloud-based anti-virus is a promising trend for the security field for its advantages;  There are many existing modules available for us to utilize;  More functions will lead to the decrease in the speed of browsing the Internet;  The hardware require for cloud-based anti- virus is very high.

17. Acknowledgements  Thanks for Zhibin and Xinyi’s previous solution. Part of our final solution is based on their work.  Thanks for Tianyi on providing mobicloud platform for our project;  Thanks for Dr. Huang who give us the instructions and the opportunity to learn and practice.

18. Any Question? Thank you!