Hello, I'm dealing with a strange networking issue. I can't tell if it's Apache or my firewall.
I have a particular server I need to access from outside via web browser. I set up apache to listen on 6571 and I set up port forwarding so when I type domain.com:6571 it should go right to the page. I've done this before without any problems. However, I have a new server that this is not working for. The firewall rule is set up correctly, as I switched the destination to a known good server which worked without any problems. Apache itself is set up to listen on 6571 and I can even access the website internally via that port. This just makes no sense to me.
Apache is also set to Allow All.
I'm on CentOS 6.5.

Thanks in advance.

Have you tried turning off the firewall or SELinux temporarily to see if it starts working?

I did find what went wrong. The firewall rule was correct. It turns out I had to add GATEWAY to /etc/sysconfig/network-scripts/ifcfg-eth0 on my server. For some reason it wasn't seeing it in /etc/sysconfig/network.
Thank you for your suggestion suicidaleggroll but I'm in a production environment so that would be, well... suicide. How ironic