.. _readiness_check:

Readiness
---------

To verify the availability and correct configuration of the appliance the GOS-Admin-menu offers the possibility of a self-check.
Start up the GOS-Admin-Menu and select the :gos:menu:`SelfCheck` option.

The GSM now verifies if all pre-requisites exist to operate.

.. figure:: images-3.1/gsm-ready.png
   :align: center
   :width: 70%

   Verifying of the operational pre-requisites

The individual pre-requisites are:

* Subscription key
* Web-administrator (scan administrator)
* Up-to date feeds
* Connectivity to the Greenbone feed server
* Configuration of the DNS server
* Connectivity and functionality of the DNS server
* Available disk space of the hard disk
* Version of the operating system
* Validity of the SSL certificate
* Availability of the configured sensors (only Midrange and Enterprise models)
* Operational state of the internal services

Please reboot the appliance if you have changed any fundamental settings or after the first configuration.