Re: 2.6 IPSEC + SNAT

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In article <1065035768.2548.8.camel@ranjeet-pc2.zultys.com>,
Ranjeet Shetye  <ranjeet.shetye2@zultys.com> wrote:

| Here's my take on it.
| 
| NAT is not an elegant standard. Its a hack to provide a temporary fix
| for the IPv4 address space crunch. On the other hand, IPSec is a good 
| standard and is also mandatory for IPv6. Hence the focus should be on
| IPSec much more than on NAT.

I think you are starting from a totally incorrect premise. NAT is not a
solution to an address space crunch, it is a way to have many servers
behind a load balancing firewall, a way to have all outgoing mail come
from a single IP (that of the inbound mail cluster), and a way to make
all http clients have the same IP address (which doesn't accept any
incoming connections) as part of a total security approach, to name a
few uses.

In short it's a general purpose tool, and you are looking at a subset of
a single capability (hiding internal addresses, routable or not) as if
it were the whole purpose of the tool.

NAT is a valuable solution to many problems, and I don't think IPv6 is
going to reduce the usefulness of the tool. That's my read on NAT, it
needs to be a fully supported function of any network solution, which is
most easily done by planning for that from the early stages of any
implementation.

-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.
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