opnsense-docs/source/development/backend.rst
2025-05-12 18:22:51 +02:00

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=======
Backend
=======
The OPNsense backend consists of several components (see Architecture for a full stack description).
Our core backend service (configd) is implemented using `Python <https://en.wikipedia.org/wiki/Python>`__. and provides two main features:
- Service interaction (using configd actions)
- Generation of configuration data (using templates)
Because we need integration between (legacy) components, we provide additional plugin options for the following components:
- Services (the services status)
- Syslog (define syslog targets)
- Interface (register interfaces, firewall use etc.)
- Service configuration (legacy service configuration, new style uses configd templates)
Services which need to be executed at system startup can use rc(8) or our syshook system.
Our :doc:`overview <backend/overview>` document contains a practical write up to explain the various phases of
operation and hooks available in them.
.. toctree::
:maxdepth: 2
:titlesonly:
:glob:
backend/overview
backend/*