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DNS names to internal servers aren't resolving on internal network but are fine on an external network?

rthomas12
Level 1
Level 1

I returned to OpenDNS a few weeks ago and everything had been working perfectly. I also run the client to keep up with my IP address.

I had to reset my internet (spectrum modem, my EA9500). I also have some public DNS names that route to Raspberry PIs and a camera system on my local network.

Devices on my internal network are now unable to access the DNS names (or external IP addresses) to the servers they are getting connection reset. On the internal network direct IP access to the internal IPs work.

I can turn off wifi on these same devices and everything works fine off network using the DNS name address.

I can also ping the DNS name on network and it resolves to the right IP address. 

Any idea how I can fix this?

3 Replies 3

rotblitz
Level 6
Level 6

Your query doesn’t belong here, because it has nothing to do with OpenDNS.

Your router cannot do NAT reflection (loopback). So the solution is to either buy another router or to resolve the related hostnames in the LAN by other means to their local IP addresses, with the local hosts files or with an internal DNS server.

rthomas12
Level 1
Level 1

I'm sorry that my query doesn't belong here. I started here because I was not having the issue until configuring OpenDNS.

Thank you for talking about NAT reflection though. I did some searching around that and my EA9500 and someone had the same issue as me and I was able to set the setting and fix my issue.

https://blog.toloughlin.com/?p=400

So @rotblitz you were correct this was not an OpenDNS issue but a router issue. I'm just not sure why I wasn't having the issue prior to OpenDNS but at least its working now.

Hope this post helps others. :)

rotblitz
Level 6
Level 6

Coincidence?