Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

22 posts


Topic # 230557 1-Mar-2018 13:44
Send private message

I got a GWN7000 on advice from someone on here. So far, awesome. Gigabit fibre, so far 100 days up time without a blip. The only thing I can't work out is the setting so I can access hit my dynamic DNS address when I'm connected to the LAN. I've got a few apps I used that don't support having 2 server IPs, it's a drag having to change the settings all the time.

Create new topic
1961 posts

Uber Geek
+1 received by user: 313

Lifetime subscriber

  Reply # 1966503 1-Mar-2018 13:58
Send private message


Hairpin NAT consists of a dst-nat and src-nat rule. Google.

22 posts


  Reply # 1966512 1-Mar-2018 14:10
Send private message

I've gone through that doc a couple times and really can't make much sense of it. Any plain English guidance appreciated

1961 posts

Uber Geek
+1 received by user: 313

Lifetime subscriber

  Reply # 1966514 1-Mar-2018 14:18
Send private message

As I inferred you need a dst-nat rule (the port forward from WAN to LAN server device) and a src-nat rule for the reply traffic from LAN server device to the LAN side clients (EDIT: I described it backwards).


Mikrotik example

113 posts

Master Geek
+1 received by user: 63

  Reply # 1966523 1-Mar-2018 14:31
Send private message

LAN Loopback (Hairpin NAT) as above needs a SrcNAT pointed towards your DstNAT rule.




The SrcNat needs to have the Src Group as your internal IP Pool




Basically it picks up anything internally trying to access your WAN IP and points it back towards the required DstNAT instead of dead-ending nowhere.




Sadly I've got an easy guide for this on Mikrotiks but not Grandstreams

3449 posts

Uber Geek
+1 received by user: 1208


  Reply # 1966679 1-Mar-2018 17:38
Send private message

Your other option would be set a custom DNS entry on your router for your D-DNS domain, and have it resolve to the internal IP address of the server.

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

N4L helping TAKA Trust bridge the digital divide for Lower Hutt students
Posted 18-Jun-2018 13:08

Winners Announced for 2018 CIO Awards
Posted 18-Jun-2018 13:03

Logitech Rally sets new standard for USB-connected video conference cameras
Posted 18-Jun-2018 09:27

Russell Stanners steps down as Vodafone NZ CEO
Posted 12-Jun-2018 09:13

Intergen recognised as 2018 Microsoft Country Partner of the Year for New Zealand
Posted 12-Jun-2018 08:00

Finalists Announced For Microsoft NZ Partner Awards
Posted 6-Jun-2018 15:12

Vocus Group and Vodafone announce joint venture to accelerate fibre innovation
Posted 5-Jun-2018 10:52 to launch Kogan Mobile in New Zealand
Posted 4-Jun-2018 14:34

Enable doubles fibre broadband speeds for its most popular wholesale service in Christchurch
Posted 2-Jun-2018 20:07

All or Nothing: New Zealand All Blacks arrives on Amazon Prime Video
Posted 2-Jun-2018 16:21

Innovation Grant, High Tech Awards and new USA office for Kiwi tech company SwipedOn
Posted 1-Jun-2018 20:54

Commerce Commission warns Apple for misleading consumers about their rights
Posted 30-May-2018 13:15

IBM leads Call for Code to use cloud, data, AI, blockchain for natural disaster relief
Posted 25-May-2018 14:12

New FUJIFILM X-T100 aims to do better job than smartphones
Posted 24-May-2018 20:17

Stuff takes 100% ownership of Stuff Fibre
Posted 24-May-2018 19:41

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.