intro to ipv6 by ben woodruff
DESCRIPTION
An introduction to IPv6 by Ben Woodruff for the Rochester 2600 meeting on 1/7 2010.TRANSCRIPT
Why
• IPv4 limited address space
• Get rid of NAT
• More efficient routing
Sunday, December 26, 2010
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
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
So really, when?
• Who knows?
• Rough guess is 8mo after exhaustion
Sunday, December 26, 2010
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
Where are the holes?
• Networks NOT IPv6 enabled but with v6 compatible hosts
Sunday, December 26, 2010
Where are the holes?
• No longer able to scan for hosts
• But what about DNS?
Sunday, December 26, 2010
Where are the holes?
• v6 is “new”
• Many firewall rules weren’t written with it in mind
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Where are the holes?
• The usual suspects have updated to include IPv6 support
Sunday, December 26, 2010
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
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