Unable to access Apache from external LAN


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Recently, my apache webserver stopped working outside my local network. Devices on the same network can connect using ipv4, public ip or domain name (so I don't think it's a port forwarding issue), but outside the network, nothing can connect to apache. I've also tried connecting to other hosting services using other ports and it works fine. My isp has not blocked port 80 and I think it is unlikely they will start blocking it.

I've made some changes since testing the external connection:

  • Configure the server to also run as a wireless access point using a bridge between the wlan0and eth0interfaces (now using the br0IP address to connect to any service, including apache)

  • Disabled apache's ssl module to renew the certificate (I couldn't do that as certbot couldn't connect to apache for authorization)

One thing to note is that requests from outside the local network don't seem to even reach Apache, because in/var/log/apache2/error.log

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For some reason the problem was that my router was not forwarding port 80 on the remote connection. I don't know why this is happening, but after removing the port, adding it again, and restarting the router, it seems to work fine.

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