Netgear GS748TS 사용자 설명서

Managing Security

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2. Select the interface.

3. Select Enable or Disable Broadcast Control in the provided field in the first row.

4. If you selected Enable Broadcast Control, select the Broadcast Mode from the list in the 

provided field in the first row.

5. If you selected Enable Broadcast Control, enter the Broadcast Rate Threshold in the 

provided field in the first row.

6. Click APPLY to update the device.

Network security can be increased by limiting access on a specific port only to users with specific 
MAC addresses. The MAC addresses can be dynamically learned or statically configured. Locked 
port security monitors both received and learned packets that are received on specific ports. 
Access to the locked port is limited to users with specific MAC addresses. These addresses are 
either manually defined on the port, or learned on that port up to the point when it is locked. When 
a packet is received on a locked port and the packet source MAC address is not tied to that port 
(either it was learned on a different port, or it is unknown to the system), the protection mechanism 
is invoked. It provides the following options for unauthorized packets arriving at a locked port:

•

Forwarded

•

Discarded with no trap

•

Discarded with a trap

•

Shuts down the port

Locked port security also enables storing a list of MAC addresses in the configuration file. The 
MAC address list can be restored after the device has been reset.

To define port security:

Click Security > Traffic Control > Port Security. The Port Security screen displays: