Firewall

OpenPanel supports Sentinel Firewall - a fork of the ConfigServer Security and Firewall (CSF).

CSF​

Firewall (CSF) UI is displayed on OpenAdmin > Firewall.

For instructions on how to use the CSF UI, please refer to Sentinel Firewall official documentation.

External Firewall​

Some cloud providers, like Hetzner, offer their own external firewalls. If you are using an external firewall, ensure the following ports are open for OpenPanel services to be accessible: 53 80 443 2083 2087 32768:60999

If you are using a custom port for OpenPanel instead of the default 2083, ensure that port is open as well.