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Re: NAT external/Public IP
From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Thu, 25 Oct 2007 13:43:26 +0200

On 2007-10-24 smarts_buy () yahoo com wrote:
Would like know is ther any security concern to bring in
external/public IP with out NAT to inside of the enterprise network.
Is it any way more secure if we use NAT?

No. NAT is a technology designed to (among other things) *enable*
communication between private and public networks. Firewalling OTOH was
designed to *restrict* communication between networks. Defining
appropriate firewall rules will secure a public IP address just as well
as a private one.

Ansgar Wiechers
"All vulnerabilities deserve a public fear period prior to patches
becoming available."
--Jason Coombs on Bugtraq

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