Chapter 4: Web management
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NS3550-8T-2S Industrial Managed Switch User Manual
Security
This section describes how to control access to the industrial managed switch,
including user access and management control.
The Security page contains the following main topics:
• Port Limit Control
• Access Management
• HTTPs / SSH
• DHCP Snooping
• IP Source Guard
• ARP Inspection
Port limit control
The Port Limit Control Configuration 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 port security module that manages MAC
addresses learned on the port. The limit control configuration consists of two sections,
a system- and a port-wide.