The INETAPP is considered a server application. It does, however, require an internet connection for some operations to provide additional functions and ensure service quality. This help page provides an insight of the INETAPP server requirements to do just that.
Please note, that the server is capable of running in an offline configuration as well. Some functions will not be available in that case and may have to be provided by administrative interaction.
INETAPP is build using Java, incorporating signed components. Java uses an internet connection to validate signatures of all signed components for security purposes. It will gracefully ignore problems if no internet connection is available, but cannot determine whether code has been tampered with or malware has been introduced.