The core component consists of the software for handling the FOXMAN‑UN database and for the inter-process communication. The database is based on the PostgreSQL ODBC system. The inter-process communication is based on the omniORB object request broker (ORB) software. The core therefore consists of a PostgreSQL database server, along with additional software to handle the communication between the various components and their processes.

In addition to the above, there is also a watchdog process that is responsible for checking the status of the core processes and re-spawning them in case of abnormal termination. The core component can only exist once in every FOXMAN‑UN system.

For most FOXMAN‑UN installations, the core does not need any configuration, nor does it need any maintenance. The only action that must be performed is to periodically backup the FOXMAN‑UN database (refer to Backup of the FOXMAN‑UN Database).