SALVADOR GIAQUINTO

1

• SALVADOR GIAQUINTO
• salvador_at_ipt.br
• ICT-OSA/Parlay Workshop 2006

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Agenda

• Motivation and objective
• IPTNet IPv4
• NAT Protocols and compatibility
• Transition methods and main mechanisms(Networks
  and Applications)
• IPTNet story and IPv6 environment
• Operational systems and Internet services support
• References

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Motivation and Objective

• Study the advantages of using IPv6 protocol at
  IPTNet or problems related to NAT.
• Evaluate several IPv4-IPv6 transition mechanisms.
• Install a pilot IPv6 network at IPT headquarters,
  extending a link to the IPT master course
  providing a suitable environment to speed up new
  studies and solutions based on IPv6.
• Enable both technical community and IPv6 services
  to promote partnerships with institutes e
  companies from the public or private sector.
• Support the Brazil IPv6 Task Force initiative

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IPTNet IPv4

56
1
24
41
32/37
39
55
53
7
12
54
2
46
1A
15
27 VLANS (Centres/Projects)
14
10
DMZ
DMZ
Private Addresses - A Class 10.VLAN.PREDIO.HOST V
LAN 9 CIAM 10.9.0.0/16 VLAN 206
IPv6 10.206.0.0/16
USP INTERNET
Firewall and NAT
Public Addresses C Class 200.18.53.0/24
(DMZ) 200.18.109.0/24 (Pedagogic)
Pedagogic
Gigabit Ethernet
Fast-Ethernet
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Compatibility to NAT protocols
 
Source IEEE Internet Computing/2002
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Transition Methods
Note The Node term is used for any system which
is executing IPv6 (Host, router, etc)

• Host/ Router- Dual stack

IPv4
IPv6
IPv6
Tunnel

• Network - Tunneling

• Gateway - Translation

IPv6
IPv4
Translator
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Compatibility addresses

• Address IPv4 Compatible
• Used when IPv6 traffic must be tunneled through
  IPv4 existent networks. Tunnels can be automated
  or configured.
• 1.2.3.4 or 01020304
• Address IPv4 Mapped
• Used to represent a node only IPv4 to a node
  IPv6.Used for internal representation.
• The IPv4 mapped address is never used by origin
  or destination IPv6 address.
• Require a host or router with double pile for
  translation.
• FFFF1.2.3.4

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Mechanism - Dual Stack
C\gtipv6 install
insmod ipv6
Linux
Windows
Source TCP/IP Tutorial e Technical - IBM
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Tunnel types

• Configured tunnel (router to router)
• Connect hosts IPv6 or IPv6 networks through IPv4
  network infrastructure
• Require configuring both ends of the tunnel
• Automatic Tunnel (router to host, host to host)
• Tunnel is build and removed after use
• Require IPv4 compatible address
• Mechanisms
• Tunnel Broker (RFC 3053 Server-based)
• 6to4 (RFC 3056 Router to router)
• ISATAP (Intra-Site Automatic Tunnel Addressing
  Protocol)
• host to router, router to host, host to host
  
• 6over4 (RFC 2529) Host to router, router to
  host
• Teredo (Tunnel through IPv4 network with NAT)
• DSTM (Dual Stack Transition Mechanism) IPv4
  over IPv6 tunnel

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Transition Mechanism

• Tunnel broker (RFC 3053)
• Servers available at Internet (FREE OF CHARGE)
• - FREENET6 Canada www.freenet6.net
• - CERNET/Nokia China - www.tb.6test.edu.cn
• - Internet Initiative Japan - www.iij.ad.jp
• - Hurricane Electric USA - www.tunnelbroker.com
• - BTexacT UK - www.tb.ipv6.btexact.com
• - Others ...

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Transition Methods
Transition IPv6 with no change on IPv4
application
Translation - Gateway

• BIS (Bump-in-the-Stack) RFC 2767)
• BIA (Bump-in-the-API) RFC 3338

• SIIT - Stateless IP/ICMP Translator RFC 2765
• NAT-PT (Network Address Transaction Port
  Translation) RFC 2766
• TRT - Transport Relay Translator
• Socks64 RFC 1928

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Integrating IPv4 network applications
Source Programming guidelines on transition to
IPv6 University of Madrid
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Integrating IPv4 and IPv6 network applications
Source Programming guidelines on transition to
IPv6 University of Madrid
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Transition Sceneries (Phases)
Fase 1
Fase 2
Fase 3
Fase 4
Aplicação IPv4
Aplicação IPv6
Socket Layer (APIs)
Socket Layer (APIs)
TCP/UDP
TCP/UDP
IPv4
IPv6
Physical Layer
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IPv6 Pilot Environment - IPTNet
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Network Tunneling - Configuration
ifconfig eth1 add 200112f05021133/64 ifconfig
eth2 add 200112f05022061/64 echo 1
gt/proc/sys/net/ipv6/conf/all/forwarding ifconfig
sit0 up ifconfig sit0 tunnel 200.143.254.13 ifco
nfig sit1 up ifconfig sit1 inet6 add
200112f01202f1/64 route -A inet6 add 0/0
gw 200112f01202f2 dev sit1
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Host Tunneling - Configuration

• www.freenet6.net program TSPC (Tunnel Server
  Protocol Client )
• Windows
• - Download TSPC package
• - Configuration file tspc.conf 
• tsp_dir/ipv6/freenet6
• client_v4200.18.53.137 (CANT BE PRIVATE
  ADDRESS)
• useridsalvador
• passwd
• - Execute C\gttspc vf tspc.conf
• Linux
• apt-get install TSPC
• sit1 Link Encapsulation IPv6 over IPv4
• inet6 address 20015c08fffffff80000
  c812359d/128 Scope Global
• inet6 address fe80c812359d/64
  Scope Link
• UP POINTOPOINT RUNNING NOARP MTU1280
  Metric1
• RX packets6725 errors0 dropped0
  overruns0 frame0

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Operational Systems - IPv6

• FreeBSD
• NetBSD
• Linux (Kernel 2.2)
• Apple (MacOS)
• Silicon Graphics (IRIX)
• Microsoft
• Windows XP/2000/2003
• 9x/ME/NT Trumpet stack
• Solaris 8
• AIX 4.3
• HP-UX
• Tru64
• OpenVMS

• Cisco IOS 12.1
• Juniper
• Nortel
• Bay
• Foundry (BigIron)
• Ericsson
• Nokia
• NEC

http//playground.sun.com/ipng
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IPv6 Utilities and Applications

• Ping6, traceroute6, netstat ...
• Mail (Sendmail, Qmail)
• DNS (BIND 9)
• Multimedia (Quake e VideoLAN Client and Server )
  
• Remote Access (SSH e FTP)
• Web (Apache)
• Browser (Mozilla, Explorer, Lynx, Mosaic,
  Netscape)
• Firewall (ipfilter, Ipfw, netfilter)
• Proxy (Squid)
• Java (SDK), Active Perl
• LDAP
• Others (tcpdump, nmap, ethereal ...)
• http//www.ipv6.org/v6-apps.html

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Microsoft IPv6 - Roadmap
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References

• http//www.br.ipv6tf.org ? Event presentations
• http//www.ipv6.org
• http//www.cg.org.br
• http//www.ipv6forum.com
• http//www.6bone.rnp.br
• http//www.freenet6.net
• http//www.hs247.com
• http//www.etsi.org
• http//www.cpqd.com.br
• http//www.parlay.org