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>For example:
>Someone on the VAN telnets to 1.2.3.4 (NT server), WinGate then changes the
>header packets to point to 192.168.1.2 and the VAN connected people are now
>on our Y2K server. 

This a classic 1:1 NAT setup.  This is where you can assign mappings from
a pool of public addresses to a pool of internal addresses.  IP Masq is
where you have ONE public ip address and it is shared between multiple
internal machines.

Fuzzy Fox mentioned port forwardin but I'm not sure if this is what you
want.  When you forward port 23 to an internal machine.  Thats it.. 
the port is used.  There are ways around this like:

        remote #1 telnets to port 24 --forwards--> internal #1 port 23
        remote #2 telnets to port 25 --forwards--> internal #1 port 23
        remote #3 telnets to port 26 --forwards--> internal #1 port 23

etc.

You might want to check out these URLs if you need 1:1 NAT:

        http://www.csn.tu-chemnitz.de/~mha/linux-ip-nat/
        http://linas.org/linux/load.html

--David
.----------------------------------------------------------------------------.
|  David A. Ranch - Linux/Networking/PC hardware         [EMAIL PROTECTED]  |
!----                                                                    ----!
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