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Summary of Certification Process (part 1)

Summary of Certification Process (part 1). IPv6 Client. IPv6 packets inside IPv4 packets. Test IPv6 Tunnel. Register a Domain Name. Domain registrar Registers whois info Assigns authoritative DNS server

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Summary of Certification Process (part 1)

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  1. Summary of Certification Process(part 1)

  2. IPv6 Client IPv6 packets inside IPv4 packets

  3. Test IPv6 Tunnel

  4. Register a Domain Name • Domain registrar • Registers whois info • Assigns authoritative DNS server • Puts “glue records” at the top-level domain (.info, .com, etc.) with A and AAAA records of your nameservers

  5. Set DNS Records

  6. Test DNS Resolution

  7. IPv6 Web Server IPv6 Backbone Native IPv6 HE.NET HTTP GET Native IPv6 IPv6 packets inside IPv4 packets IIS Server Listening On [::]:80 IPv6-to-IPv4 Gateway

  8. IPv6 Email Server IPv6 Backbone Native IPv6 HE.NET SMTP SEND Native IPv6 IPv6 packets inside IPv4 packets James Server Listening On [::]:25 IPv6-to-IPv4 Gateway

  9. Chapter 3

  10. 3.3 IPv6 Header • Traffic Class: same as TOS in IPv4 • Flow Label: used for QoS • Next Header: can start a chain of headers

  11. 3.4 IPv6 Extension Headers • Extension headers are only examined by the destination node • Except for the rarely-used Hop-by-Hop Options header

  12. Most Important Extension Headers • TCP, UDP, ICMP6 • Specify the higher-layer protocol • AH and ESP • Used for IPsec security • Mobility • Used for Mobile IPv6

  13. Routing Header Zero • Deprecated, and recommended to be filtered out • http://www.ietf.org/rfc/rfc5095.txt • A denial-of-service condition is possible by specifying a malicious path, such as a loop

  14. ICMPv6

  15. 3.5.3 Neighbor Discovery • Main Uses • Autoconfiguration of IPv6 Addresses • Duplicate Address Detection (DAD) • Address Resolution (replacing ARP)

  16. Router Advertisement • Router Solicitation (RS) • Sent by an interface when it is enabled and needs an IP address • Router Advertisement (RA) • Routers send these messages out, telling clients the network prefix and other configuration information

  17. Neighbor Solicitation • Neighbor Solicitation (NS) • A node sends this message to verify that a neighbor is still reachable, or for Duplicate Address Detection (DAD) • Neighbor Advertisement (NA) • The response to a NS message

  18. “Solicited Node Multicast Address” (see p. 3-27)

  19. 3.5.4 Autoconfiguration • Automatic addressing via two mechanisms • Stateless Autoconfiguration (SLAAC) • No server needed • Routers advertise network portion • Hosts make up their own host portion • Stateful Autoconfiguration (DHCPv6) • Requires a DHCP server

  20. 3.5.6 Path Maximum Transmission Unit (PMTU) Discovery • IPv4 allows each router to fragment packets if needed to pass into a network with a small MTU • In IPv6, only the sender can change the packet size • This makes the process much more efficient

  21. Path Maximum Transmission Unit (PMTU) Discovery • ICMPv6 “Packet Too Big” messages are sent to inform the source device to use smaller packets

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