FreeBSD 4.0 with ipnat/ipfw2 1:1 NAT

[Matt Juszczak]

Hello all,

Was just wondering everyone's opinion on this subject....

Got a FreeBSD box ... 2.4 ghz Xeon with 1 gig RAM and two gb nic cards.  
This box's job is to do a 1:1 NAT for about 2000 workstations.

In everyone's opinion, is IPNAT and IPFW2 a good solution for this?  
Also, will that box handle that (I'm pretty sure it will), and if so, 
any security recommendations? (other than custom kernel, local firewall, 
and securelevel 2).

Thanks!

-Matt