Hi all,

i hope everyone is well.

I have an ER7212PC V1 (Firmware 1.2.0) and I am having an issue with NAT loopback.

We have a web server running on the internal LAN, port forwarded to WAN. Accessing externally via the IP or DNS works fine, but accessing internally via the DNS/external IP does not work.

This is obviously a NAT loopback issue but I cannot find the option to enable/configure this, nor any documentation online?

Any help would be greatly appreciated, as the only thing I found a technician made a ticket, so no idea how to resolve it: https://community.tp-link.com/en/business/forum/topic/672190

Thank you in advance!

Best regards, Jack.