1. DNS: Brave new worlds Tim Deegan tim.deegan@cl.cam.ac.uk HEAnet conference November 2005

2. Academic ideas on the future of the DNS: –Fixing current/future problems – with science! –Changes to the architecture of the DNS. –Keeping the clients and the protocol. Not: –IETF work: DNSSEC, EDNS*, new types. –Non-DNS name services: Active Names et al. –DNS measurement.

3. The DNS: boxes and arrows root ie dcu.ie

4. 1. Distribute! dcu.ie

5. 2. Peer-to-peer!

6. 3. Centralize!

7. In summary Three possible new directions for the DNS Distribute: copy everything everywhere P2P: shuffle everything around Centralize: move the complexity Will we see any of this? Up to you…

8. References Distribution Kangasharju and Ross, A Replicated Architecture for the Domain Name System, Infocom 2000 Malone, The root of the matter: hints or slaves, IMC 2004 Handley and Greenhalgh, The Case for Pushing DNS, HOTNETS 2005 P2P Cox et al., Serving DNS using a Peer-to-Peer Lookup Service, IPTPS 2002 Ramasubramanian and Sirer, The Design and Implementation of a Next Generation Name Service for the Internet, SIGCOMM 2004 Centralizing Deegan et al., The Main Name System: An exercise in centralized computing, CCR 35(5), 2005 Tim Deegan http://www.cl.cam.ac.uk/~tjd21/