IPv6: The Next Generation Internet Protocol Luke Simpson and Martin Bouts ECE 4112 Spring 2005 May 2nd, 2005

 Benefits of IPv6  Running out of address space  Possible IP address exhaustion before 2011  Increase from 2^32 to 2^128 addresses  (decimal) vs fe80:f2f0:9e9a:b10c:a908:2000:dc6a:1028 (hex)  Static Header vs. Dynamic header  IPv6 is flexible IPv4IPv6

 Benefits of IPv6  Network and routing simplification  No need for subnets, NAT, DHCP  Routing more efficient

Security  Provided Security  Built in IPsec  Other security can be added with dynamic header  Potential Security Issues  Transition Mechanisms Exploited  Holes in secure systems  Hard to detect intrusion  New technology provides different/new possible exploits

 Problems facing IPv6  Compatibility  IPv6 is not compatible with IPv4  Software and hardware have to be upgraded  Implementation  Will have to coexist with IPv4 for a long time  Dual backbone routers, IPv6 over IPv4 tunnels, protocol translation mechanism

 Performance  Mixed IPv4 and IPv6 increases complexity  Header increased from 20 to 40 bytes  Flow based rather than packet based  Conclusion  IPv6 is needed and will be implemented over time  Mixed IPv4 and IPv6 networks will make things more complex  IPv6 will not achieve full potential until it is fully implemented

Lab Procedure  Remove the IPv4 IP addresses  Install the IPv6 module on Redhat 8.0 and 7.2  Install the IPv6 protocol on Windows XP  Use ethereal to sniff and IPv6 ping and ssh 6 session  Upgrade Red Hat 8.0 ftp server vsftpd and edit conf file to make it IPv6 compatible  Sniff IPv6 ftp session