What configuration setting should be changed to prevent unauthorized use of an open wireless network?

To enhance the security of an open wireless network and prevent unauthorized use, altering the power levels of the wireless signal can be effective but isn’t the most direct method among the options. Adjusted power levels can help limit the range of the wireless signal, thereby reducing the risk of unauthorized access from locations outside the intended coverage area. However, it is not a foolproof security measure, as skilled attackers may still find ways to access the network from nearby locations.

Changing the default SSID is often recommended for better security practices because it prevents attackers from identifying the underlying hardware and might deter casual unauthorized users. However, simply changing the SSID does not inherently secure the network; it merely obscures the identity of the network.

MAC filtering allows you to create a list of approved devices that can connect to the network, adding a layer of security by restricting access based on the device's MAC address. This method has its limitations since MAC addresses can be spoofed, but it does contribute to preventing unauthorized access when used alongside other security measures.

Content filtering focuses on controlling the types of content that can be accessed through the network rather than restricting who can connect to the network itself. It helps in managing the appropriateness of the content accessed but does not prevent unauthorized devices from