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4 posts

Wannabe Geek


Topic # 112958 29-Dec-2012 14:12 Send private message

Has anyone had any success setting up 6to4 from a home Xtra broadband connection?

I've been playing around with Linux & Mac boxes (behind NAT) and a Cisco router (which is assigned the public IPv4 addr) and a dual-stacked (telehoused outside Xtra's nw) Linux box but all my testing seems to suggest that Xtra are filtering protocol 41 - even though my traceroute attempts with raw GRE also fail but which I know to work because of the functioning VPN using it.

I can ping 192.88.99.1 (and traceroutes appear to go to .au...) from home (...traceroute from my colo'd box reaches fx.net.nz in Wgtn) and I've even tried using my colo'd box as a relay but the IPv4 traffic doesn't seem to make it there.

The one thing that would give me certainty which I can't do is put a Linux box in the place of the Cisco router to see if any proto 41 traffic makes to the the public IPv4 address but then if they are filtering this outbound traffic then it's unlikely inbound would get through.

Any ideas/knowledge on this subject please?

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1949 posts

Uber Geek
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Inactive user


  Reply # 738523 30-Dec-2012 10:41 Send private message

I can say uncategorically that Telecom doesn't filter any traffic apart from TCP port 25 (SMTP) to stop computers infected with viruses sending bulkloads of spam.  You can opt out of that filter by contacting the broadband helpdesk.

So I suspect it's something wrong with your configuration... And as others said can't you configure the 6to4 tunnel on your router?  As long as you have new enough IOS then you should be away.  I configured a 6to4 on a old Cisco 1721... Just needed enough ram and new enough IOS.

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