RE: Destination Nat

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Does anyone know how the data is processed?
Does it perform a lookup if it is, ie: icmp,tcp,udp etc or does it store
it in numeric form?

-----Original Message-----
From: netfilter-admin@xxxxxxxxxxxxxxxxxxx
[mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx] On Behalf Of Alistair
Tonner
Sent: Wednesday, June 02, 2004 11:14 AM
To: netfilter@xxxxxxxxxxxxxxxxxxx
Subject: Re: Destination Nat

On June 2, 2004 07:19 am, John A. Sullivan III wrote:
> -p 6 is the same as -p tcp only a little faster as it does not have to
> look up tcp in the protocols file and translate it from tcp to 6.  UDP
> would be -p 17, ICMP -p 1, ESP -p 50, etc.

	That lookup would only be done when the rule was posted or
loaded.
	Thus - the time saving is only on loading the rule.  
	I believe that the rule data is *all* stored in numeric form ...
	But I could be completely wrong on that front.

	Alistair.
>
> On Tue, 2004-06-01 at 23:38, John Black wrote:
> > thanks, ill give it a try tomorrow when i get to work.  what is the
-p 6?
> > ----- Original Message -----
> > From: John A. Sullivan III <john.sullivan@xxxxxxxxxxxxx>
> > To: <black@xxxxxxxxx>
> > Cc: <netfilter@xxxxxxxxxxxxxxxxxxx>
> > Sent: Friday, May 28, 2004 8:56 PM
> > Subject: Re: Destination Nat
> >
> > > If I understand you correctly and remember your original rule,
then I
> > > think you have it backward.  If you are changing the destination,
you
> > > probably want to change it from the public address to the private
> > > address:
> >
> > john






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