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I have a home network with a small web-server hosted behind a LAN-WAN cascaded router. The port forwarding rules on my Altice One router point traffic on port 8080 to my cascaded routers port 8080 which then forwards it to web-server. This works fine from the WAN but loopback from the primary LAN fails. I'm new to this type of network, are there any solutions?

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    google "hairpinning". Your router needs to support that.
    – Tetsujin
    Feb 25, 2021 at 19:02
  • @Tetsujin I can't seem to find much information about whether the Altice One supports it but I can loopback successfully from LAN2 which seems to indicate that it does have support. Additionally running nslookup from a device on the primary LAN shows that the DNS is resolving to the correct WAN address
    – Yllier123
    Feb 25, 2021 at 19:31

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