RE: full_cone_nat

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On Tuesday 2009-04-07 20:16, Jozsef Kadlecsik wrote:
>On Tue, 7 Apr 2009, Hugo Miguel Mendes wrote:
>
>> What I mean with Full Cone NAT is the following:
>>[...]
>
>I answered you on Thu, 2 Apr 2009 when you asked the same question on
>the netfilter mailing list. The answer hasn't changed since then: 
>currently there's no way to create full cone NAT.
>
>It might be possible to write a new full cone NAT target by creating 
>wildcard expectations.

Yeah there is a case where cone nat does not quite work. Assuming there
are the following mappings:

origsrc=192.168.17.2 origdst=80.10.20.30 replsrc=134.98.76.54 repldst=80.10.20.30
origsrc=192.168.17.3 origdst=80.20.30.40 replsrc=134.98.76.54 repldst=80.20.30.40

Then there is no way to ambiguously map incoming IP_CT_NEW connections
for 134.98.76.54 to an origsrc.
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