Which of the following statements regarding the firewall zone security level is false?

The statement indicating that the default security level of the new zone is 1 is false because, in many firewall settings, new zones typically start with a default security level that is often higher than 1—such as 100 or another designated level—depending on the specific firewall implementation. The intent behind this design is to provide better security out of the box, meaning that a zone needs a specific security level that reflects its intended usage and security posture.

The other statements can be understood as follows: the security level of user-defined zones is indeed configurable, allowing network administrators to tailor the security requirements based on the needs of different traffic types. Furthermore, it's possible to change the configured security level of user-defined zones, ensuring flexibility in network design. Lastly, the principle that two zones cannot share the same security level is fundamental; unique security levels help maintain distinct access controls and security measures for different segments of the network.