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 From:  "Andrew Lewis" <andrew at coastal dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] accessing wan addresses while on LAN or Optionals
 Date:  Fri, 18 Nov 2005 18:04:26 -0500
Spectra wrote:
> "It is not possible to access NATed services using the WAN IP address
> from within LAN (or an optional network)."
> 
> This is the note that is displayed in Firewall:NAT and also the outcome
> that we experience when trying to access our mail server using a WAN
> address.  It is quite inconvenient to have to switch IPs to the internet
> address when we're on the LAN, so I am wondering if anyone has a
> solution or some kind of hack to get the WAN address to resolve while
> you're using a machine on the LAN.
> 
> Let me know what your experiences/fixes for this are.

If m0n0 had a circuit level gateway (layer 4 proxy) it would be a cinch. 
  NAT really tends to do strange things.