Port forwarding stopped working out of the blue!

[francisaugusto]

Hi,

I have several port forward rules, including ports 80/443 to a web server.

Suddenly today I see the traffic through those ports do reach the server, but no data is sent back. If I do a curl from another server on some of the VLANs, it works fine. Doing it from an external client gets me a log on nginx (port 80), but no data is sent back.

All the ports that I forwarded are having the same behavior.

What could have suddenly stopped working? This has being working for years, and I haven't touched it for a while. Any hint on how to debug/fix this?

[opkky]

Just FYI.

I also had an issue with port forwarding.
When I solved ping issue on WAN interface, port forwarding started to work also.

Here is a link to my topic. Hope it will help to you.

https://forum.opnsense.org/index.php?topic=34320.0