* Michiel van Baak ([email protected]) wrote:
> On 09:06, Wed 22 Apr 09, Janne Johansson wrote:
> > Lars Nooden wrote:
> >> Alexander Hall wrote:
> >>> Lars Nooden wrote:
> >>>> Sometimes I have to set up a LAN inside a pre-existing NAT'd LAN and
> >>>> traffic from the inner LAN (B) does not make it to the Internet or even
> >>>> to final, external interface (4).
> >
> >> I've searched around a bit and see there is something wrong (in general)
> >> with "double NAT"
> >
> > I dont know where you got that info from, but as long as each NAT is set  
> > up correctly, there isnt any difference in being NATed once or five 
> > times.
> 
> I have seen trouble with 'double nat' too many times in the voip world
> to even bother with it anymore.

..and for some protocols you need ALGs in every NAT.
/jkm

> 
> Ok, most of the times one of the nat devices was a DSL modem, and their
> implementation is,..... interesting.
> 
> >
> > In -> Out is the same, and as long as you set each NAT up right with the  
> > fordards, Out -> In will be as good/bad as one NAT.
> >
> 
> -- 
> 
> Michiel van Baak
> [email protected]
> http://michiel.vanbaak.eu
> GnuPG key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x71C946BD
> 
> "Why is it drug addicts and computer aficionados are both called users?"

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