I have my home server apps configured with NGINX proxy manager and DuckDNS to access remotely, but about three weeks ago DuckDNS URLs stopped working on my home network. I can access 192.168.XXX.XXX:1234 on the home network but myapp.duckdns.org times out.

It DOES work as expected using a VPN or on mobile data.

Any ideas as to what’s going on?

EDIT: I kind-of sort-of got a workaround working using pi-hole “local DNS” feature to point the duckdns URL to NGINX. Didn’t work

EDIT 2: Disabling the router’s firewall completely seems to have fixed it. Still trying to figure out the exact setting that did it. I will update this post if I can.

  • Dangerhart@lemm.eeEnglish
    1·
    10 hours ago

    Are you using your router as DNS and DHCP? With Verizon I had a security setting that was blocking public DNS entries to resolving to local addresses. I can’t remember what it’s called, but it’s to prevent a certain type of attack. For a while I disabled it but switching to pihole as DNS, DHCP and using unbound solves it without the security implications