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 From:  Lee Sharp <leesharp at hal dash pc dot org>
 To:  "m0n0wall at lists dot m0n0 dot ch" <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: [m0n0wall] Dynamic DNS update with m0n0wall behind router
 Date:  Wed, 08 Sep 2010 00:26:08 -0400
On 09/07/2010 08:59 PM, Maxim Khitrov wrote:
> Hello all,
>
> Two questions about the behavior of RFC 2136 Dynamic DNS updates:
>
> 1. Does m0n0wall use the WAN interface address when sending the
> update, or does it perform a check of the WAN IP using some external
> service?
>
> 2. Are updates sent on a regular schedule or only when the WAN
> interface address changes?
>
> My m0n0wall gateway is located behind the ISP's router (Verizon FiOS).
> It's a DMZ host, the second router just provides the physical
> connection to the coax cable, but the m0n0wall WAN interface still
> receives a local 192.168.100.x/24 IP. As far as I know, there is no
> way for the m0n0wall to get a public IP assigned to the WAN interface.

The system in m0n0wall will not work for you as it is based on the WAN 
IP, and updates when it changes.  You will need one of the clients on an 
internal system that pulls the outside IP.

			Lee