Nat Hairpinning/Reflection on GCC6011

Grandstream Networking
1

I have a GCC6011 and i want to add a Nat Loopback/Reflection/hairpinning so that when I am accessing the public IP of the router from WITHIN the LAN, it loops back to the router itself and I can access my web server on it. I can access the server easily from outside the network using the external IP but it is timing out when I’m using the Public IP from within the network. How do I achieve this? I have been playing around with the SNAT and DNAT rules but i cant figure it out … Please guide anyone

Changed ISP a few days ago. In the past it wasnt a problem.
Have a dynamic wan IP
Modem is in bridge mode

2

Are you using a FQDN to access your internal server? Is it possible with the ISP change your FQDN still points to your old public WAN address?

3

I don’t have a GCC but in the GWN7003 there is a DNS tab where you can put the FQDN and the IP you want to send it to.

LAN → Local DNS Records

2 Likes
5

Got the solutions thanks to James.
Checked the DDNS and it was up to date with the new WAN IP adress.

6

That did the trick, added a wildcard and problem solved! thanks

7

Sooo i got another question.
I got a second server on a different location. The wan ip is different and its also dynamic.
both are Synology nas server.
Syncen with no-ip.com
both are behind the same fqdn with a different subdomain (ex server1.website.com and the second is server2.website.com
As the solution to my first problem was adding a local DNS record i added a wildcard (ex *.website.com) in the local DNS and now every adress is going that way. with the result i cannot get on the second server in my home network.
temporarily i added a second local dns record pointing to the other wan adress but as soon as the IP updates i will lose connection again. thoughts anyone?
i have a few services running on my server on this local adress. Would be very unpracticle to add everyone of them to de local DNS record.