199
 GS748T Smart Switch
3. When the selected Ingress Control Mode is an option other than Disable, select Enable or 
Disable from the Status menu to specify the administrative status of the mode.
4. In the
 Threshold field, specify the maximum rate at which unknown packets are forwarded. 
The range is a percent of the total threshold between 0–100%. The default is 5%.
5. Click Canc
el to cancel the configuration on the screen and reset the data on the screen to 
the latest value of the switch.
6. If you ma
ke changes to the page, click Apply to apply the changes to the system. 
Port Security Configuration
Use the Port Security feature to lock one or more ports on the system. When a port is locked, 
only packets with an allowable source MAC addresses can be forwarded. All other packets 
are discarded.
To display the Port Security Configuration page, click Security
  Traffic Control, and then 
click the Port Security 
 Port Security Configuration link.
 
To configure the global port security mode: 
1. I
n the Port Security Mode field, select the appropriate radio button to enable or disable 
port security on the switch.
2. Click Canc
el to cancel the configuration on the screen and reset the data on the screen to 
the latest value of the switch.
3. If you ch
ange the mode, click Apply to apply the change to the system.