Re: does NAT based on iptables support TCP hole punch?

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On Thu, 11 Jun 2009 11:42:44 +0800
Tony Wan <visual2me@xxxxxxxxx> wrote:

> Hi all,
> 
> It's said that TCP hole punch does not work if both endpoints come
> from 2 sub-networks, whose NAT are both implemented by iptables. I
> just want to make sure whether this is true. If so, what type of nat
> can iptables work as? full-cone, restricted, port restricted, or
> symmetric?
> 
> Sorry if it's not appropriate to ask such a question here. Thanks in advance.

You might want to look up STUNT which uses an intermediary to open the NAT tunnel.
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