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Nick Feamster

Nick Feamster. Research: Network security and operations Teaching CS 7260 in Spring 2007 CS 7001 Mini-projects: http://www.cc.gatech.edu/~feamster/mini-projects/. feamster@cc.gatech.edu http://www.cc.gatech.edu/~feamster/. The Internet “pretty much works”…right?. Some Food for Thought.

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Nick Feamster

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  1. Nick Feamster • Research:Network security and operations • Teaching CS 7260 in Spring 2007 • CS 7001 Mini-projects: • http://www.cc.gatech.edu/~feamster/mini-projects/ feamster@cc.gatech.eduhttp://www.cc.gatech.edu/~feamster/

  2. The Internet “pretty much works”…right?

  3. Some Food for Thought • Getting much spam? • Would you trust the Internet for 911 calls? Air traffic control? Online banking? • Will your home network will keep working when you upgrade the firmware on that NAT box?

  4. What is “Network Operations”? Designing tools, techniques, algorithms, etc., to help communication networks run better. • Security • Monitoring and detection • Mitigation • High availability/reliability • Automation and troubleshooting Three specific tasks

  5. Some problems are out of our hands… But…

  6. Security: Stopping Unwanted Traffic • Spam: About 80% of today’s email is “abusive” • Content filtering doesn’t work • Network monitoring: Today’s network devices were designed for yesterday’s threats • Circa 2000: Worms, DDoS • Today: Botnets, spam, click fraud, etc.

  7. Availability: Reality check • The phone network: 5 “nines” of reliability • 5 minutes of downtime a year • The Internet: about 2.5 “nines” • Almost a day of downtime a year

  8. Troubleshooting and Diagnosis • “Where’s the fault?” • Internet routing: lots of noise; what’s important? Lots of fun, important problems in signal processing, data mining, etc.

  9. Why to Do Networking Research • A chance to apply many different “tools” • Theoretical foundations • Statistics, machine learning, signal processing, data mining, etc. • A chance to build cool systems • Real, working systems that people want and need • Solving real problems (network management, anti-censorship, fighting spam, etc.) • A chance to measure and explore • Internet measurement puts the “science” in computer science

  10. Problem Areas • Network Security • How to guarantee where traffic will or won’t go? • How to counter Web censorship and surveillance? • What techniques are spammers using? • Network Management and Troubleshooting • How can operators tell when they’ve made mistakes? • How to mine large datasets (e.g., traffic, routes, etc.) • Networking and Economics • How do “selfish” users affect traffic patterns? • How to improve connectivity at the network edge?

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