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14 Intel® Gigabit Ethernet Switch AXXSW1GB User Guide
Managing Port Security
Network security can be increased by limiting access on a specific port only to users with
specific MAC addresses. The MAC addresses can be dynamically learned or statically
configured. Locked port security monitors both received and learned packets that are
received on specific ports. Access to the locked port is limited to users with specific MAC
addresses. These addresses are either manually defined on the port, or learned on that port
up to the point when it is locked. When a packet is received on a locked port, and the
packet source MAC address is not tied to that port (either it was learned on a different
port, or it is unknown to the system), the protection mechanism is invoked, and can
provide various options. Unauthorized packets arriving at a locked port are either:
• Forwarded
• Discarded with no trap
• Discarded with a trap
• Shuts down the port
Locked port security also enables storing a list of MAC addresses in the configuration file.
The MAC address list can be restored after the device has been reset.
Disabled ports are activated from the Port Security Page.
To define port security:
1. Click Network Security > Traffic Control > Port Security. The Port Security
Page opens.
Figure 11. Port Security Page