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Using Local Management
CHAPTER 5
Local Management
LOCATION
Main Menu
Configure Device
Forwarding and Filtering
Configure Port Security
Configure Port Security
Description
Port security prevents unauthorized access of a port by “securing” a list of
specific MAC addresses to a port. If the switch sees a MAC address that is
not on the secured list, it discards the traffic. When port security is active,
the switch forwards traffic from a single static address automatically learned
by the switch, or from a list of static MAC addresses defined by the
administrator.
To set port security from Local Management
1 On the Configure Device screen, select Forwarding and Filtering.
2 Select Configure Port Security from this menu.
Then choose one of the following options.
Option 1 - Automatically use the first MAC address seen on the port: The
switch remembers the first MAC address seen on the port and accepts traffic
only from that MAC address. The secured port will not learn any new MAC
addresses.
1 To set the switch to use the first MAC address seen on the port you are
securing, in the MAC Learning column, press z until <Single>
displays.
2 Click Submit.
NOTE
When you set port security to
Disable, you must manually place
static MAC addresses into the
forwarding table. Only traffic from
these static MAC addresses go
through the port. Other traffic is
dropped, and the port is still
enabled.
When you set port security to
Single, the first MAC address to
hit that port is automatically
placed into the forwarding table.
Traffic from any other MAC ad-
dress disabled the port.