Hi, my WG roadwarrior setup worked flawlessly for several months. However recently it stopped working and I can't figure out why.
I have narrowed it down to most likely a firewall misconfiguration, although I haven't changed anything recently.
It seems from the screenshot from the Live Firewall Viewer, that the incoming WG connection to the WAN interface at port 51820 is blocked by the firewalls WAN-interface "default deny" rule. Although I have explicitly specified in the WAN rules to allow WG incoming traffic at port 51820.
It seems like a simple configuration mistake but I can't find my error. I hope you can help :)
Running OPNsense 22.7.9_3
Problem solved. Somehow my DynDNS wasn't updating correctly so my WAN facing IP wasn't correct anymore. It is still interesting why the connection still managed to find the OPNsense appliance while behind a different WAN-ip. Most important it works again!