You could modify and run a no-ip client on a server inside your lan.
Just get traceroute output to feed no-ip.com dns...

Joe wrote:
> Thanks for your reply Jim.  I stand to correct myself on my previous note,
> after thinking about it, I cannot run the desktop client updater for no-ip,
> because there's no way for the desktop client to know what my external IP
> address is ;D so anyway, I guess I have to give up my DNS name in favor of
> ez-ip. Any suggestions from anyone out there on recommendations for free
> dynDNS providers for maximum compatibility? The reason I ask is I build lots
> of firewalls like this, and am always testing new Linux and hardware-based
> firewalls, and I would like to not have to end up switching DNS providers
> again :)
> 
> Thanks
> Joe 
> 
> -----Original Message-----
> From: Jim Gifford [mailto:jim at giffords dot net] 
> Sent: Friday, March 05, 2004 1:42 PM
> To: m0n0wall at lists dot m0n0 dot ch
> Subject: Re: [m0n0wall] no-ip use with Dynamic DNS updater
> 
> On Fri, Mar 05, 2004 at 11:10:24AM -0800, Joe wrote:
> 
>>Hi guys,
>> 
>>I use no-ip.com's dynamic DNS, and when I switched over to using M0n0Wall
>>from Smoothwall, I found I was not able to use it! :-(   I know the name
> 
> of
> 
>>no-ip's update server, is there a way to make their service work with
>>m0n0wall? I can of course use their update client instead, but I'd rather
>>have my m0n0wall manage the update.
>> 
>>Thanks
>>Joe
>> 
> 
> 
> I too was using no-ip quite happily.  I switched to using one of the ones
> supported by ez-ipupdate instead.  I didn't have anyone by myself
> depending on the name, so it wasn't a real issue for me.
> 
> I think the simplest way to get m0n0wall to support no-ip would be to get
> the ez-ipupdate people to add support for it.
> 
> Another option might be to make your old no-ip address into a CNAME that
> points to another dyndns address.  However, this requires upgrading to
> the pay version of no-ip.
> 
> Manuel has been pretty clear (I think) about only wanting one dynamic dns
> update client.
> 
> hope this helps,
> jim
> 
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