Security Tab - Port Security - Linksys MGBLH1 - Gigabit LH Mini-GBIC SFP Transceiver User Manual

• Force-Unauthorized—The controlled port state is set to Force-Unauthorized (discard
traffic).
Enable Periodic Reauthentication—Permits immediate port reauthentication.
The Setting Timer button opens the Setting Timer screen to configure ports for 802.1x
functionality.

Security Tab - Port Security

Port security is a feature that allows you to configure a switch port with one or more device
MAC addresses that are authorized to access the network through that port. When port security
is enabled on a port, the switch stops learning new MAC addresses on the specified port when
it has reached a configured maximum number. Only incoming traffic with source addresses
already stored in the dynamic or static address table will be accepted as authorized to access
the network through that port. If a device with an unauthorized MAC address attempts to use
the switch port, the intrusion will be detected and the switch can automatically take action by
disabling the port and sending a trap message.
To use port security, specify a maximum number of addresses to allow on the port and then let
the switch dynamically learn the <source MAC address, VLAN> pair for frames received on the
port. When the port has reached the maximum number of MAC addresses, the selected port
will stop learning. The MAC addresses already in the address table will be retained and will not
expire. Any other device that attempts to use the port will be prevented from accessing the
switch.
Set the action to take when an invalid address is detected on a port, select Security Status to
enable security for a port, set the maximum number of MAC addresses allowed on a port.
SRW2024P User Guide
Using the web-based Utility for Configuration
Security Tab - Port Security
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