What are the three modes of port security in network devices?

The identification of the three modes of port security in network devices as protect mode, restrict mode, and shutdown mode is based on how these modes manage and respond to violations of security policies.

Protect mode allows the port to drop packets from unauthorized MAC addresses but does not notify an administrator nor updates the security statistics. This mode enables devices to operate with less interference while still providing a basic level of security.

Restrict mode also drops packets from unauthorized MAC addresses, but it additionally sends notifications to the network administrator. This mode helps maintain a balance between security and usability, allowing administrators to actively monitor and respond to security threats.

Shutdown mode is the most severe option, where the port will be put into an administrative shutdown state upon detecting a security violation. This mode effectively disables access through the port until it is manually re-enabled by an administrator, providing a strong defensive measure against unauthorized access.

These modes are designed to provide flexible security postures, allowing network administrators to choose the best response based on their organization's security requirements. Other options listed do not accurately represent the recognized modes of port security in networking contexts.