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Author Topic: IPv6 tunnel behind a NAT (Windows XP)  (Read 18858 times)

weblionx

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IPv6 tunnel behind a NAT (Windows XP)
« on: June 22, 2008, 07:55:32 PM »

I ran the commands under the Tunnel Details page for Windows XP, and it appears that Firefox attempts to use IPv6 first, then goes back to IPv4 when it times out, though I can't be sure. (kame.net doesn't dance, some other IPv6 sites don't load, though it seems to try.)

Is there anything specific to do if I'm behind a router doing NAT?  I have a 192.168.1.x address for this computer.
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kriteknetworks

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #1 on: June 23, 2008, 09:35:20 AM »

Check your router config and make sure its allowing protocol 41 through.
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weblionx

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #2 on: June 23, 2008, 11:31:03 AM »

Ah, dang.  After a bit of searching it turns out my router (WRT54G 3.1) doesn't support them with official firmware.  I'm not really keen on changing it, but thanks for the help.
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kriteknetworks

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #3 on: June 24, 2008, 09:23:53 PM »

Can you not get a firmware upgrade?
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weblionx

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #4 on: June 25, 2008, 09:50:14 AM »

There is no new official firmware for the router.  However, DD-WRT and OpenWRT (3rd party firmware) both support the tunnels and support being endpoints (So I could have every computer on the network have an IPv6 address.)

I'm looking into DD-WRT at this point, but I'm not sure if I'm going to go ahead and use it.  Come the fall, I'll be back at college with my own public IPv4 address.
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lorenzoz

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #5 on: June 27, 2008, 02:43:37 AM »

Enable "DMZ Mode" in your router pointing to your local ip address
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weblionx

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #6 on: June 27, 2008, 10:54:58 PM »

I've already put my computer into the DMZ and I'm still not able to access any IPv6 website or ping it.

Also, I went ahead with installing DD-WRT, and while it has added more features, the latest doesn't have support for 6to4 tunnels directly on it, though I've disabled the firewall and put myself in the DMZ. I still have my computer set up to do the tunneling itself.

EDIT:

It appears Windows Firewall doesn't let it through.  Once I disabled it everything seems to work.
« Last Edit: June 27, 2008, 11:03:41 PM by weblionx »
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broquea

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #7 on: June 28, 2008, 12:12:46 AM »

for dd-wrt, use v23 if you want working ipv6 tunnel termination on the appliance.
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arcticfire

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Re: IPv6 tunnel behind a NAT (Windows XP)
« Reply #8 on: July 27, 2008, 08:50:24 PM »

for dd-wrt, use v23 if you want working ipv6 tunnel termination on the appliance.
Thanks for that. I was going to install v23 then upgrade to v24, but now that you mentioned that, I'll stick with v23 standard. (I'm on v4 Official, so I have to use v23 mini, then go from there)
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