Figure
Port Security: any port in security mode will be “locked” without permission of MAC address learning. Only the incoming packets with MAC already existing in the MAC address table can be forwarded normally. You can disable the port from learning any new MAC addresses then use the static MAC addresses screen to define a list of MAC address that can use the secure port. Enter the settings then click submit to apply the change on this web page.
You can click” Help” button; the following screen in Figure
Figure
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