[Cialug] Qwest DSL NATed?

Nathan C. Smith nathan.smith at ipmvs.com
Mon Dec 17 12:05:22 CST 2007


So you are in effect double-NATed?  Once by your DSL modem and once by your
internal router, but you can still reach into your internal network, your...
inner sanctum?   ;)
 
-Nate


  _____  

From: Matthew Nuzum [mailto:newz at bearfruit.org] 
Sent: Monday, December 17, 2007 11:37 AM
To: Central Iowa Linux Users Group
Subject: Re: [Cialug] Qwest DSL NATed?


On Dec 17, 2007 10:59 AM, Nathan C. Smith <nathan.smith at ipmvs.com
<mailto:nathan.smith at ipmvs.com> > wrote:



One of my co-workers in on Qwest DSL - I think MSN is the ISP.  Anybody know
if this combination is NATed?

I may try to talk him into a different ISP, he wants to be able to VPN into
his home network.  I'm not sure Qwest + dynamic DNS would let him achieve 
that.  Anybody doing this now?



I'm using this same network configuration - Qwest + MSN. I run a webserver
in my house (for development and testing purposes, also for remote access)
and have no problems, *except* that I had to go to the webpage of my dsl
modem and configure my home router as a dmz host. So, my configuration looks
like: 

Modem gets external IP address on dsl side
Modem assigns 192.168.0.1 <http://192.168.0.1>  to it's ethernet port
Modem uses dhcp to assign 192.168.0.2 <http://192.168.0.2>  to my home
router 

Therefore I have to tell the modem, via http://192.168.0.1/
<http://192.168.0.1/>  to treat 192.168.0.2 <http://192.168.0.2>  as a dmz
host so that it merely forwards all traffic to it and let me manage the
rules through the router's interface. 

-- 
Matthew Nuzum
newz2000 on freenode 

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