4.12 Security 
This section is to control the access of the Managed Switch, includes the user access and management 
control.   
The Security page contains links to the following main topics: 
  Port Limit Control 
  Access Management 
  HTTPs / SSH 
  DHCP Snooping 
  IP Source Guard 
  ARP Inspection 
 
 
4.12.1 Port Limit Control 
This page allows you to configure the Port Security Limit Control system and port settings. 
Limit Control allows for limiting the number of users on a given port. A user is identified by a MAC 
address and VLAN ID. If Limit Control is enabled on a port, the limit specifies the maximum number of 
users on the port. If this number is exceeded, an action is taken. The action can be one of the four 
different actions as described below. 
The Limit Control module utilizes a lower-layer module, Port Security module, which manages MAC 
addresses, learnt on the port.   
The Limit Control configuration consists of two sections, a system- and a port-wide.   
The Port Limit Control Configuration screen in Figure 4-12-1 appears.