1. Some Thoughts
about
Vulnerabilities & Resilience
of the
Internet Today
Daniel Karrenberg
Chief Scientist, RIPE NCC

2. Who is talking: Daniel Karrenberg
• 1980s: helped build Internet in Europe
– GUUG, EUUG, EUnet, Ebone, IXes, RIPE, ...
• 1990s: helped build RIPE NCC
– 1st CEO: 1992-2000
• 2000s: Chief Scientist & Public Service
– Trustee of the Internet Society, IETF, ...
• 2010s: Chief Scientist
– Interests: Internet measurements, stability,
trust & identity in the Internet, ...
Daniel Karrenberg, July 2012 2

3. La perfection est enfin atteinte,
non pas lorsqu'il n'y a plus rien à ajouter,
mais lorsqu'il n'y a plus rien à enlever.
Antoine de Saint Exupéry

19. Le Conseil a souligné que l'indépendance de
l'UE à l'égard des approvisionnements externes
constituait la clé de voûte de son action.
...
Certains pays dépendent d'un fournisseur
unique, ce qui les rend vulnérables aux
interruptions d'approvisionnement.

21. And now for something completely different ...
Several layers down ...
In fact down to DNS, since this is an AFNIC event.

22. DNS Root Name Server Locations
Daniel Karrenberg, July 2012 22

23. k.root-servers.net: Locations
Daniel Karrenberg, July 2012 23

24. The computing scientist's main challenge
is not to get confused by the complexities
of his own making.
E. W. Dijkstra

25. RIPE Atlas Probes
25
13

26. k-root: Instance ID
Daniel Karrenberg, July 2012 26

27. k-root: Instance ID
Daniel Karrenberg, July 2012 27

28. k-root: Serial Numbers
Daniel Karrenberg, July 2012 28

29. And you believe inserting
more stateful elements into
the network will make things
easier, more resilient and
safer ?
Unnamed Network Architect

30. The cheapest, fastest, and
most reliable components
are those that aren't there.
Gordon Bell

31. Questions?