Advanced customization

The OPNsense webGUI is a powerful configuration tool, and you rarely need to change or customize the OPNsense configuration while using the CLI. Still, it can happen, and it is essential to know which tools we can count on for doing this task.

The config.xml file is the webGUI's generated XML configuration file, it is where the OPNsense configuration file resides.

Customizing the XML configuration file

All configurations generated by webGUI through the OPNsense framework are saved in /conf/config.xml.

Note

Before modifying the config.xml file, always make a backup copy! Editing this file can crash your OPNsense installation, so take caution!

The following is an example where the manual editing of the config.xml file could help.

This is an example showing the substitution of OPNsense hardware. Let's suppose that you need to replace the OPNsense hardware, and the new one uses a different network card, which means changing the Network...