Ok; let's have the "Does DNAT contribute to Security" argument one more time...

[marka at isc.org (Mark Andrews)]

Firewalls and NATs are "warm fuzzy feeling" devices.  The best way
to keep secure is to run up to date software and to only provide
services you need.

Firewalls and NAT both inhibit inventions.  Both really do very little
with modern operating systems that have been designed to be connected
without a firewall in front of them to the Internet.

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org