9.1.2 Implement physical and/or logical controls to restrict access to publicly accessible network jacks.
For example, network jacks located in public areas and areas accessible to visitors could be disabled and only enabled when network access is explicitly authorized. Alternatively, processes could be implemented to ensure that visitors are escorted at all times in areas with active network jacks.
9.1.2 Interview responsible personnel and observe locations of publicly accessible network jacks to verify that physical and/or logical controls are in place to restrict access to publicly accessible network jacks.
Restricting access to network jacks (or network ports) will prevent malicious individuals from plugging into readily available network jacks and gain access into internal network resources.
Whether logical or physical controls, or a combination of both, are used, they should be sufficient to prevent an individual or device that is not explicitly authorized from being able to connect to the network.