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Sub domain name no longer resolves to local IP after getting new router.
WQYU
Newbie
‎07-23-2021 08:05 AM

I have a computer that runs windows Apache server and prior to me getting my new router G3100, I originally had FiOS Gateway router and I have a domain name registered and I created a sub domain name that points to a local IP address so when I visit the sub domain name let’s just call it for the purpose of this question website.example.com, anyone who is on my net work visit this website “website.example.com”, would be able to see my website running. Anyone who is not on my home Wi-Fi network and tries to access that website of course they would not be able to view anything and probably get server not found.


After getting my new router which was pretty easy to install, when I try to access website.example.com, I get server not found even though I have looked up the DNS and it points to the correct local IP address, when I visit the local IP address I’m able to see my website but for some reason with this router I’m not able to see my website unless I manually type in the IP address or I create a DNS record on the router on the router itself even though when I had my old router I didn’t have to create a DNS record on the router itself, I did it from my Web posting control panel.

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Re: Sub domain name no longer resolves to local IP after getting new router.
dslr595148
Super User
Super User
‎07-24-2021 04:26 AM

Your new NAT router does not support Loopback / Reserve NAT / Hairpin.

I point to pcwintech.com under Routers -> Router Help to where it says How to test if your router supports Reverse NAT.

Please note this assumes that users from the outside can reach your server. If not, make sure:

#1 A Static IP is setup either on the computer or for the computer. Points to portforward.com -> Networking to their Static Vs. Dynamic IP Address guide.

#2 Make sure that you are forwarding correctly.

Two of the most common mistakes are:

a) not fowarding to the correct IP Address.

b) filling in the source port. This needs to be left alone as Any.

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Re: Sub domain name no longer resolves to local IP after getting new router.
Cang_Household
Super User
Super User
‎07-23-2021 09:45 AM

Is your server assigned a static IP address?

Have you tried to ipconfig /flushdns  ?

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Correct answers are available for this post. Jump to solution.
Re: Sub domain name no longer resolves to local IP after getting new router.
dslr595148
Super User
Super User
‎07-24-2021 04:26 AM

Your new NAT router does not support Loopback / Reserve NAT / Hairpin.

I point to pcwintech.com under Routers -> Router Help to where it says How to test if your router supports Reverse NAT.

Please note this assumes that users from the outside can reach your server. If not, make sure:

#1 A Static IP is setup either on the computer or for the computer. Points to portforward.com -> Networking to their Static Vs. Dynamic IP Address guide.

#2 Make sure that you are forwarding correctly.

Two of the most common mistakes are:

a) not fowarding to the correct IP Address.

b) filling in the source port. This needs to be left alone as Any.

Reply