is any one able to set tunnel on system behind nat.

[zeeemughal]

i am able to set tunnel on cisco router and also on server2003 server. both are have public ip addresses. but i also want this tunnel on my home system. i am using dsl with aztech dsl 605eu modem and have windows 7. i read on some forums they said i need to forward protocol 41. but i am not sure how i can forward protocol 41 to system. i also set my system in dmz zone but not able to create tunnel.

I will appreciate if any one give some tutorial .

[cholzhauer]

I'm not sure where you want to host the tunnel at...let's resolve that first.

You also might want to contact your ISP and see if they are filtering protocol 41.

[zeeemughal]

i want to create tunnel on my windows 7 pc.

[cholzhauer]

Gotcha.

What commands did you use to try and create the tunnel? Remember, if you're running NAT, you need to use your NAT address to create the tunnel.

[zeeemughal]

netsh interface teredo set state disabled
netsh interface ipv6 add v6v4tunnel IP6Tunnel 192.168.1.1 216.66.22.2
netsh interface ipv6 add address IP6Tunnel 2001:***:*:***::2
netsh interface ipv6 add route ::/0 IP6Tunnel 2001:***:*:***::1

[cholzhauer]

Blocking your IP addresses does nothing and makes it harder for us to troubleshoot.

You have the right commands; the problem must be with protocol41.  Check your router and make sure you're not blocking protocol 41 and check with your ISP to make sure they're sending it to you.

[zeeemughal]

can you tell me which ports are used by protocol 41. i will also check my isp if they are blocking these ports.

[cholzhauer]

port != protocol

protocols are their own separate animal (tcp, udp, icmp, ect)