SMC Networks SMC6752AL2 Manual De Usuario

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Web – Click Security, Port Security. Set the action to take when an invalid 
address is detected on a port, mark the checkbox in the Status column to 
enable security for a port, set the maximum number of MAC addresses 
allowed on a port, and click Apply.

CLI – This example selects the target port, sets the port security action to 
send a trap and disable the port and sets the maximum MAC addresses 
allowed on the port, and then enables port security for the port.

Network switches can provide open and easy access to network resources 
by simply attaching a client PC. Although this automatic configuration and 
access is a desirable feature, it also allows unauthorized personnel to easily 
intrude and possibly gain access to sensitive network data.

The IEEE 802.1X (dot1X) standard defines a port-based access control 
procedure that prevents unauthorized access to a network by requiring 
users to first submit credentials for authentication. Access to all switch 
ports in a network can be centrally controlled from a server, which means 
that authorized users can use the same credentials for authentication from 
any point within the network.

Console(config)#interface ethernet 1/5
Console(config-if)#port security action trap-and-shutdown

Console(config-if)#port security max-mac-count 20
Console(config-if)#port security
Console(config-if)#