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Network Sniffer Anuj Shah

Network Sniffer Anuj Shah. Advisor: Dr. Chung-E Wang Department of Computer Science. Agenda. Motivation for the project Proposed Designed System Methodology Conclusion Future projects Questions. Motivation for the Project.

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Network Sniffer Anuj Shah

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  1. Network SnifferAnuj Shah Advisor: Dr. Chung-E WangDepartment of Computer Science

  2. Agenda • Motivation for the project • Proposed Designed System • Methodology • Conclusion • Future projects • Questions

  3. Motivation for the Project • The ability of computers to communicate comes with many advantages and disadvantages. • It is highly important to monitor the computer network for the suspicious programs to prevent any kind of data hazard. • Sniffer is a tool that monitor and analyze the data packets which are flowing in the network. • This project will gave me an opportunity to learn about the .NET framework.

  4. Proposed Designed System • The proposed system would be able to listen to the network and capture packets which are over the network. • Further analyze the packets, check for the source and the destination address, check for the protocol, its checksum and much more. • Ability to capture packets from both the wired and the wireless networks. • Tool will be based on Microsoft .NET environment and written in C# and will be able to parse through TCP, IP, DNS and many more packets.

  5. Features • Some of the privileges that system will provide are: • Monitor bandwidth utilization. • Log the network traffic for future references. • Troubleshoot network problem. • network attacks. • Record source and the destination of the packets, can be used for tracking purposes. • Capture packets from both wired and wireless LAN • Support for both IPV4 and IPV6 protocols.

  6. General Concepts Sample encapsulation of application data from UDP to a Link protocol frame Internet Protocol Suite in operation between two hosts connected via two routers and the corresponding layers used at each hop

  7. Network Sniffer (Packet Analyzer)

  8. Technology • C# • WinpCap Library • Windows Packet Capture Library(WinpCap) is the library that allows applications to capture and transmit network packets bypassing the protocol stack • It consists of a driver, that extends the operating system to provide low-level network access, and a library that is used to easily access the low-level network layers

  9. Methodology • I had to understand how the following technologies or the concepts works: • .NET framework and its concepts • Different Packet formats • Drivers and the API’s

  10. Conclusion • The concept and the technology for the system both were new to me. • Cleared new concepts in .NET programming. • It was good to get a hands on experience on such a networking project. • Good experience with working on Drivers and different API’s.

  11. Future Projects • Introduce new features like port scanning and also analyze more on the packets. • Built the software to the next level which will also act as a firewall and not just sniffer.

  12. Questions ?

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