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[Teredo | http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/teredo.mspx] is a method of tunneling [IPv6] packets over [IPv4] that is capable of providing direct connections even in situations where both ends are behind [NAT] gateways. The efficiency of virtual PeerToPeer networks greatly benefits from this capability. However, it does require that * there is no FireWall between you and the [Teredo] server * you don't have a realworld [IPv6] address from somewhere else * you are not behind a ''symmetric [NAT]''. If so, you may be able to employ some other means such as setting up [6to4] on the [NAT] device in order to get an [IPv6] address. !!! Implementation notes for clients [Linux], [FreeBSD]:: You can use [Miredo | http://www.simphalempin.com/dev/miredo/]'s client mode to implement [Teredo] on [Linux] or [FreeBSD], provided your [Kernel] has [IPv6] support. Notes: * [Linux] 2.4 and above use symmetric [NAT] -- if this causes problems, set up [6to4] on your [Linux] box instead. <br> MicrosoftWindows:: <br> You need XP Service Pack 2 or the [Advanced Networking Pack | http://www.microsoft.com/downloads/details.aspx?FamilyId=E88CC382-8CE6-4739-97C0-1A52A6F005E4&displaylang=en]. On a CommandLine, do: <pre> ipv6 setup netsh interface ipv6 set teredo client </pre> Note: if you are on a MicrosoftWindows domain you must substitute <tt>client</tt> for <tt>enterpriseclient</tt>. Now you should be able to use [VoIP] and [P2P] applications that support [IPv6] as if you had a realworld [IP] address. You can monitor the interface using: <pre> netsh interface ipv6 show teredo </pre> !!!Implementation notes for [NAT] gateways !!Cone [NAT] (does work with Teredo) * FreeBSD (atl east monowall) !!Symmetric [NAT] (doesn't work with Teredo or STUN) * Linux ---- CategoryNetworking
5 pages link to
Teredo
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UniversalPlugAndPlay
IPv6Addressing
MeetingTopics.2005-03-28
NAT
IPv6Setup