Which of the following options is a functionality or tool that disallows access to a wireless network based on the layer 2 address of the client device?
Layer 2 addresses (also called physical address) are MAC addresses. Using MAC filtering you can disallow any devices that are not explicitly granted access. While this can help increase security, it is not fool proof and advanced attackers can easily spoof the MAC address to gain access. MAC filtering alone is not sufficient to protect a network.
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What is MAC address filtering and how does it work?
What are the limitations of MAC address filtering?
What are some alternatives to MAC address filtering for securing a wireless network?