Gnomedex 8.0

EasyEdit

(What's this?)

Sat 2:00pm - Hubble Project (Arvind Krishnamurthy and Ethan Katz-Bassett)

What is Hubble - It helps find black holes across the internet. Specifically, looking at why some websites become persistently unreachable.

Black Hole: When paths are available to a web server, but traffic persistently does not reach the server.

Hubble System Goal: On a global scale

Example: "Recent Attacks on Georgian Networks"
"Cyber warefare campaign by Russia is seriously disrupting many Georgian websites" - Ministry of Foreign Affairs, Augst 11th, 2008

But its not just wars that create unreachability.
- Warfare
- ?

Q: How many sensors are deployed?
- at least 35, but sometimes a few hundred

Q: How long do black holes last?
- 3 week study start 9/17/2007
- 31,000 black holes involving 10,000 netowrks
- 60% lasted > 2 hours

Q: Who uses Black Hole info?
- Network Operators
- System to detour around problems
- Other ideas sent to Hubble support
- Excuses for lost/forgotten emails
- Having trouble emailing a client
- Governments
- Rats

Summary
- H: working real time system
- Lots of reachability probme,s some long
- combinging info

Website (see it working):
- http://hubble.cs.washington.edu

Future:
- How would results look if we could measure from everywhere?
- How do we get measurements from everywhere?

Goal: on-demand probmes from any network
- Plan todevelop software prober plugin
- Build apps that incent users to contribute measure ments by providing bneift
of easurements
- bittorrent client (bitTyrant)
- Reliability-focused detouring - Firefox plugin
- Apps build on iPlane predictions
- System to predict path, delay, loss, bandwidth, etc.

Conclusions:
- What whoudl we be doing?
- How do we get you/everyone to issue problems for us?
- What are concerns (security, etc.)?
- What are applications that could beneift from measurements?
- What should we measure?

Questions? http://hubble.cs.washington.edu

Add your session notes here.

[Click EasyEdit to add your notes here]