Port Security Settings - D-Link DGS-3212SR User Manual

Port Security Settings

A given port's (or a range of port's) dynamic MAC address learning can be locked such that the current source
MAC addresses entered into the MAC address forwarding table can not be changed once the port lock is enabled.
The port can be locked by using the Learn <Disabled> pull-down menu to Enabled, and clicking Apply.
This is a security feature that prevents unauthorized computers (with source MAC addresses unknown to the
switch prior to locking the port (or ports) from connecting to the switch's locked ports and gaining access to the
network.
The following parameters can be set:
Parameter
Unit
From/To
Admin State
Max.Addr(0-10)
Lock Address Mode
D-Link DGS-3212SR Layer 2 Gigabit Ethernet Switch
Figure 14-1. System Log Servers − Add
Description
Allows you to specify a switch in a switch stack using that switch's Unit ID.
15 indicates a switch in standalone mode.
A consecutive group of ports may be configured starting with the selected
port.
This pull-down menu allows you to Enable or Disable Port Security
(locked MAC address table for the selected ports).
The number of MAC addresses that will be in the MAC address forwarding
table for the selected switch and group of ports.
This pull-down menu allows you to select how the MAC address table
locking will be implemented on the switch, for the selected group of ports.
The options are Permanent, DeleteOnReset, and DeleteOnTimeout.
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Section 14