Port security features

Port security supports need to know (NTK), intrusion protection, and port security traps.

The NTK feature prevents traffic interception by checking the destination MAC address in the outbound frames. The feature makes sure that frames are sent only to hosts that have passed authentication or whose MAC addresses have been learned or configured on the access device.

The intrusion protection feature examines the source MAC address in inbound frames for illegal frames and takes a pre-defined action on each detected illegal frame. The action can be disabling the port temporarily, disabling the port permanently, or blocking frames from the illegal MAC address for 3 minutes (not user configurable).

Configure the port security module to send traps for port security events such as login, logoff, and MAC authentication to monitor user behavior.