RE: [NAT] NAT with Windows2000

--- Tim Dorcey <Tim.Dorcey@eyematic.com> wrote:
> 
> > Now you're ready to configure additional options for NAT.
> ...
> 
> Ah, it sounds like you might be able to answer a question that is near
> and dear to my heart.  If a host in the private address space, behind a
> Microsoft NAT product, sends a packet from UDP port X to 2 different
> hosts in the public address space, will the NAT forward them both from
> the same port on the NAT?  Or, will it use a different public port port
> for each (private addr,private port,remote addr,remote port)
> combination?
> 
> I know that with Linux IP Masquerade it will do the latter by default,
> or the former if you activate "LOOSE_UDP" option.  I wish I had an
> inventory of all NAT product behavior in this regard.
> 
> The reason this is important is well explained in "Short term NAT
> requirements for UDP based peer-to-peer applications"
> <draft-huitema-natreq4udp-00.txt>.
> 
This is also mentioned in RFC 3022 (Section 3.1), RFC 3027 (section 5.1)
and draft-ietf-nat-app-guide-06.txt, section 3.1.1

> Tim

cheers,
suresh

=====

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