IPv6
                            http://ben.woodruff.ws/




Sunday, December 26, 2010
Why

                   • IPv4 limited address space
                   • Get rid of NAT
                   • More efficien...
Why not now?

                   • Local ISPs don’t support it
                   • Tunnel brokers (6to4) not production
 ...
When?

                   • As of November, only 3% of the IPv4 space
                            was unallocated
        ...
So really, when?

                   • Who knows?
                   • Rough guess is 8mo after exhaustion


Sunday, Decem...
Last legs for IPv4

                   • NAT at the ISP level
                   • Name based virtual hosting of websites
...
Where are the holes?


                   • Networks NOT IPv6 enabled but with v6
                            compatible h...
Where are the holes?

                            • No longer able to scan for hosts
                            • But wha...
Where are the holes?

                   • v6 is “new”
                   • Many firewall rules weren’t written with it
   ...
Where are the holes?


                   • The usual suspects have updated to include
                            IPv6 su...
Where are the holes?

                   • Try simply accessing web servers using
                            http://their...
Sources

                   •        Why you want IPv6:
                            http://en.linuxreviews.org/Why_you_wan...
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Intro to IPv6 by Ben Woodruff

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An introduction to IPv6 by Ben Woodruff for the Rochester 2600 meeting on 1/7 2010.

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Intro to IPv6 by Ben Woodruff

  1. 1. IPv6 http://ben.woodruff.ws/ Sunday, December 26, 2010
  2. 2. Why • IPv4 limited address space • Get rid of NAT • More efficient routing Sunday, December 26, 2010
  3. 3. Why not now? • Local ISPs don’t support it • Tunnel brokers (6to4) not production quality • Cost-benefit is low for most Sunday, December 26, 2010
  4. 4. When? • As of November, only 3% of the IPv4 space was unallocated • Best guess I’ve heard is March 2011 for exhaustion of unallocated space Sunday, December 26, 2010
  5. 5. So really, when? • Who knows? • Rough guess is 8mo after exhaustion Sunday, December 26, 2010
  6. 6. Last legs for IPv4 • NAT at the ISP level • Name based virtual hosting of websites (doesn’t work with SSL) • Tighter control of allocations Sunday, December 26, 2010
  7. 7. Where are the holes? • Networks NOT IPv6 enabled but with v6 compatible hosts Sunday, December 26, 2010
  8. 8. Where are the holes? • No longer able to scan for hosts • But what about DNS? Sunday, December 26, 2010
  9. 9. Where are the holes? • v6 is “new” • Many firewall rules weren’t written with it in mind Sunday, December 26, 2010
  10. 10. Where are the holes? • The usual suspects have updated to include IPv6 support Sunday, December 26, 2010
  11. 11. Where are the holes? • Try simply accessing web servers using http://their-ipv6-address/ • Likely that they don’t have a vHOST for it, so the default will be shown Sunday, December 26, 2010
  12. 12. Sources • Why you want IPv6: http://en.linuxreviews.org/Why_you_want_IPv6 • Uninformed Vol 10 Article 3: http://uninformed.org/?v=10&a=3 • IPv4 Address Exhaustion: http://en.wikipedia.org/wiki/IPv4_address_exhaustion Sunday, December 26, 2010

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