"Transparent" Mode in IPCop / smoothwall / MNF (real IP inside firewall)

Currently I want to replace my firewall (sonicwall) in data center, as
it was configed as "transparent" mode as follows.

Public
|
|
|
|
Firewall (123.456.789.10)
|
|
|-------------------------------------------
| | | |
Web1 Web2 Ftp1 Ftp2

IP: 123.456.789.11 123.456.789.12 .13 .14
Gw: 123.456.789.10 .10 .10 .10

It means all the server inside firewal is using Real/public IP, instead
of the 192.168 internal IP.
And I can still control the port opening of the .11 to .14 in the rule
setting interface.

I have searched though all the forums and still can't get the following
answers.

1. Can IPCop / smoothwall / MNF support the above setting --
"transparent" mode ? If yes, how to set ?

2. I am not sure the above servers should be put in the lan(internal)
or the (dmz) ?

The purpose of the firewall is to protect the server and port
forwarding only.
Received on Thu Sep 29 19:59:10 2005