What is the purpose of the firewall checker tool in 3CX?

The purpose of the firewall checker tool in 3CX is to verify firewall configuration. This tool plays a crucial role in ensuring that the firewall settings are correctly set up to allow for smooth communication between the 3CX phone system and its endpoints. By confirming the firewall rules and network configurations, the tool helps identify potential issues that could interfere with the operation of the PBX, such as blocked ports or incorrect IP addresses.

In the context of the 3CX system, proper firewall configuration is essential for SIP and RTP traffic. If the firewall is not configured correctly, users may experience problems with call setup, audio issues, or even complete failures in connecting to the PBX. Therefore, utilizing the firewall checker tool helps administrators proactively address configuration issues before they lead to disruptions in service.

The other options relate to actions that do not align with the function of the firewall checker. For instance, updating firewall software refers to the maintenance of the firewall application itself, while monitoring network traffic involves inspecting data packets flowing through the network rather than focusing specifically on configuration. Changing firewall settings is an administrative action that may be performed based on the recommendations given by the checker but is not the core purpose of the tool itself.