asuscomm DynDNS double-nat problem

[bozolino]

my network is in a double-nat situation (cable modem with another nat upstream). and because the default ddns configurations on asus-merlin do not externally check the wan ip, all dyndns functionality on my network fails. i would specifically need a working xxx.asuscomm.com ip to get remote access via asus' iphone app to my router.

does anyone have an idea how to write a custom ddns script with external ip check to get a valid xxx.asuscomm.com ip?

 

[Therion87]

What is the upstream NAT? Are you in control of it?

If it's a wireless router/modem combo from an ISP it's be easiest to just call them and have them set it for bridging and eliminate the double NAT. So it would just act like a modem and not a router/firewall.

 

[bozolino]

What is the upstream NAT? Are you in control of it?

I'm afraid not. It's a cable provider, and it's just the way they link their modem to their network. My router is behind the cable modem.

 

[Zirescu]

Don't suppose you ever came across an answer to this question? I've run into the same situation and was hoping to keep the asuscomm.com hostname setup at the client site.

 

[Striker317]

I'm afraid not. It's a cable provider, and it's just the way they link their modem to their network. My router is behind the cable modem.

Who is your internet service provider?
What modem is being used?