Is it necessary to allow outbound and inbound access to http://3cx.com on the firewall to download updates?

Allowing outbound and inbound access to http://3cx.com on the firewall is indeed mandatory for downloading updates. When updates are released for the 3CX system, the software needs to connect to the 3CX servers to retrieve these updates. Both outbound access is required for the system to send requests to the server and download the necessary files, and inbound access may be necessary for certain configurations or firewalls that require specific rules to be set. Ensuring that these access permissions are correctly configured allows for seamless updates and helps maintain the security and functionality of the 3CX system.