[lug] port forwarding

[Deva Samartha]

Now I got one too:

Scenario:

inner LAN   -----  firewall  -----   internet  $INET-IP
$LAN-IP                 |
                              |
                              |   $DMZ-IP
                            DMZ w/ web & mail server with masq private IP's

going from inner LAN to DMZ/web server using internet IP addresses 
(URL's  going thru DNS) hangs.

Using the $DMZ-IP from inner LAN connects fine ( using ipchains forward 
queue  on FW).

  I'll need to intercept the internet $INET-IP coming from the inner 
LAN,  masq them  in the firewall to DMZ-IP and send them to the dmz interface.

How would I do that? Linux Kernel is 2.2.16.

Suggestions appreciated,

Thanks,

Samartha