Michael D Schleif wrote:
> This is the problem:
> 
> [1] As desired, tcp 3389 is forwarded (DNAT) from the
>     Bering-uClibc/shorewall box to a server on the local LAN, when using
>     the the firewall's external interface.
> 
> [2] When using a DMZ address, tcp 3389 is also forwarded to that server
>     on the local LAN, and NOT the desired DMZ host.
> 
> [3] The desired result is tcp 3389 to DMZ host when DMZ host is
>     specified; and forwarded to local LAN when firewall external address
>     is specified.
> 
> 
> I think that I know what is going on here; but, I do NOT know what is
> the proper configuration.
> 
> What is the correct configuration for this?
> 
> What do you think?

I think that you need to specify the firewall's external IP address in
the ORIGINAL DEST column of your DNAT rule for tcp port 3389.

-Tom
-- 
Tom Eastep    \ Nothing is foolproof to a sufficiently talented fool
Shoreline,     \ http://shorewall.net
Washington USA  \ [EMAIL PROTECTED]
PGP Public Key   \ https://lists.shorewall.net/teastep.pgp.key


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