D-Link DGS-3212SR Layer 2 Gigabit Ethernet Switch
Section 14
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.
Figure 14-1. System Log Servers
−
Add
The following parameters can be set:
Parameter
Description
Unit
Allows you to specify a switch in a switch stack using that switch’s Unit ID.
15 indicates a switch in standalone mode.
From/To
A consecutive group of ports may be configured starting with the selected
port.
Admin State
This pull-down menu allows you to
Enable
or
Disable
Port Security
(locked MAC address table for the selected ports).
Max.Addr(0-10)
The number of MAC addresses that will be in the MAC address forwarding
table for the selected switch and group of ports.
Lock Address Mode
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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