9-2
Configuring and Monitoring Port Security
Overview
Overview
Using Port Security, you can configure each switch port with a unique list of
the MAC addresses of devices that are authorized to access the network
through that port. This enables individual ports to detect, prevent, and log
attempts by unauthorized devices to communicate through the switch.
Note This feature does not prevent intruders from receiving broadcast and multi-
cast traffic.
Basic Operation
Default Port Security Operation. The default port security setting for
each port is off, or continuous. That is, any device can access a port without
causing a security reaction.
Intruder Protection. A port that detects an “intruder” blocks the intruding
device from transmitting to the network through that port.
Feature Default Menu CLI Web
Displaying Current Port Security n/a — page 9-10 page 9-28
Configuring Port Security disabled — page 9-12 page 9-28
Intrusion Alerts and Alert Flags n/a page 9-34 page 9-32 page 9-35
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