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[Teredo|http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/teredo.mspx] is a method of tunneling [IPv6] packets over [IPv4] in such a way that allows the packets to travel through [NAT]. This can be used by peer to peer applications to allow two people behind seperate NAT's to talk to each other directly thus making the peer to peer networks more efficient. Under Linux/FreeBSD you need to have [IPv6] in your kernel, and need to install/run http://www.simphalempin.com/dev/miredo/ in client mode. Under Windows you can use the Teredo client that comes with Windows XP SP2 and above, or prior versions with the [Advanced Networking Pack|http://www.microsoft.com/downloads/details.aspx?FamilyId=E88CC382-8CE6-4739-97C0-1A52A6F005E4&displaylang=en]. To enable this you need to run at the cmd prompt: <pre> ipv6 setup netsh interface ipv6 set teredo client </pre> now you should be able to use [VoIP] and [P2P] applications that support [IPv6] as if you had a real world IP address. Teredo won't work if: * You have a realworld [IPv6] address from somewhere else. * You have a "restrictive [NAT]" (if you have one of these, please click the edit button at the bottom of this page and list it here!) * Theres a firewall between you and the teredo server. * You're on a Windows domain (in that case use netsh interface ipv6 set teredo enterpriseclient) Windows can tell you whats going on by: <pre> netsh interface ipv6 show teredo </pre>
5 pages link to
Teredo
:
UniversalPlugAndPlay
IPv6Addressing
MeetingTopics.2005-03-28
NAT
IPv6Setup