ipfw + NAT doesn't work

Ruben de Groot mail25 at bzerk.org
Fri Sep 18 14:05:49 UTC 2009


On Thu, Sep 17, 2009 at 02:53:12PM -0400, Robert Huff typed:
> 
> Ruben de Groot writes:
> 
> >  > 	However: using these I still can't get through
> >  
> >  Through to what? You seem to be able to connect on a local subnet, but
> >  not to the internet through NAT, which you say is ok, because you
> >  shouldn't ?
> >
> >  Please explain exactly what you want to do.
> 
> 	1) With the firewall enabled, but no NAT-related rules, I can't
> get out.
> 	This is as expected.
> 	2) With the NAT rules added, I should be able to get out, but
> can't.
> 	Clear?

I think so. What's your outgoing ip? The rules you posted:

>ipfw add 5000 nat 15 all from any to any
>ipfw nat 15 config log same_ports ip 10.0.0.0/8
                                      ^^^^^^^^^^

Looks strange to me. Instead of 10.0.0.0/8 I believe you should use
a single IP that you want to translate to (ie your outgoing IP address).

Ruben



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