xStack
®
DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
222
NOTE:
Ports that are in Shutdown (Forever) mode will be seen as link
down in all windows and screens until the user recovers these ports.
Port Security
A given port’s (or a range of ports') 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
Admin State
pull-down menu to
Enabled
,
and clicking
Apply
.
Port Security
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.
To view this window, click
Security > Port
Security > Port Security Entries
, as shown
below:
Figure 6 - 3 Port Security Settings and Table
The following parameters can be set:
Parameter Description
Unit
Choose the Switch ID number of the Switch in the switch stack to be modified.
From/To
A consecutive group of ports may be configured starting with the selected port.
Admin State
This pull-down menu allows the user to enable or disable Port Security (locked MAC
address table for the selected ports).
Max. Learning Addr. (0-16)
The number of MAC addresses that will be in the MAC address forwarding table for the
selected switch and group of ports.
Mode
This pull-down menu allows the option of how the MAC address table locking will be
implemented on the Switch, for the selected group of ports. The options are:
