WAN Portforwarding has suddenly failed on my Flint 2. Previously I was forwarding port 443 (SSL) from WAN -> my Raspberry Pi in LAN which is hosting a server. Now attempts to access this from outside the network fail, they end up just timing out. When I check if the port is open with online port-checker tools, they state the port is closed. The same thing happens with UDP ports opened for Wireguard. I have tried updating the router firmware to the latest, and restarting, with no resolution.
Hello,
SSH to the router, and execute these commands, post the results here:
ifconfig
ip r
arp -a
curl <your Raspberry Pi IP:443>
ping <Raspberry Pi IP>
I figured it out, it turns out my ISP decided to switch us to CGNAT without telling us. Switched to a new ISP and got a dynamic IP and now everything is working again.
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