Choose the 
menu System→Access Security→Access Control to load the following page. 
 
Figure 4-15 Access Control 
The following entries are displayed on this screen: 
  Access Control Config 
Control Mode:  Select the control mode for users to log on to the Web 
management page. 
  Disable:Disable the access control function. 
  IP-based: Select this option to limit the IP-range of the users 
for login. 
  MAC-based: Select this option to limit the MAC address of the 
users for login. 
  Port-based: Select this option to limit the ports for login. 
IP Address&Mask  These fields can be available for configuration only when IP-based 
mode is selected. Only the users within the IP-range you set here 
are allowed for login. 
MAC Address:    The field can be available for configuration only when MAC-based 
mode is selected. Only the user with this MAC address you set 
here is allowed for login. 
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