QTech QSW-2800 series Configuration Manual - Chapter 12 Port Security
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Chapter 12 PORT SECURITY
12.1 Introduction to PORT
SECURITY
Port security is a MAC address-based security mechanism for network access controlling. It is
an extension to the existing 802.1x authentication and MAC authentication. It controls the
access of unauthorized devices to the network by checking the source MAC address of the
received frame and the access to unauthorized devices by checking the destination MAC
address of the sent frame. With port security, you can define various port security modes to
make that a device learns only legal source MAC addresses, so as to implement
corresponding network security management. After port security is enabled, the device detects
an illegal frame, it triggers the corresponding port security feature and takes a pre-defined
ac
tion automatically. This reduces user’s maintenance workload and greatly enhances system
security.
12.2 PORT SECURITY
Configuration Task List
1. Basic configuration for PORT SECURITY
Command
Explanation
Port mode
switchport port-security
no switchport port-security
Configure port-security of the interface.
switchport port-security mac-address
<mac-address> [vlan
no switchport port-security mac-address
<mac-address> [vlan
Configure the static security MAC of the
interface.
switchport port-security maximum <value>
[vlan
no switchport port-security maximum
<value> [vlan
Configure the maximum number of the
security MAC address allowed by the
interface.
switchport port-security violation {protect |
restrict | shutdown}
no switchport port-security violation
When exceeding the maximum number of
the configured MAC addresses, MAC
address accessing the interface does not