SMC Networks 6709L2, Management Manual

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F
ORWARDING AND
F
ILTERING
3-25
Configuring Port Security
If you enable port security, the switch will stop learning new addresses on
the specified port. Only incoming traffic with source addresses already
stored in the dynamic address table will be accepted. The MAC addresses
already in the address table will be retained and will not age out. This can
be used to prevent unauthorized access to the switch.
To use port security, first allow the switch to dynamically learn the source
MAC address for frames received on an interface for an initial training
period, and then enable port security to stop address learning. Be sure you
enable the learning function long enough to ensure that all valid members
have been registered on the selected interface.
To add new members at a later time, you can manually add static
addresses, or turn off port security to reenable the learning function long
enough for new members to be registered. Learning may then be disabled
again, if desired, for security.
Web – Click Administrator=>Filtering Database=>Port Security. Mark the
the ports for which you want to enable port security, then click Apply.