Allied Telesis AT-S105 - Manual (Page 188)

Chapter 17: Destination MAC Filter
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Overview
The Destination MAC Filter feature prevents both the AT-FS750/24POE
and AT-FS750/48 switches from forwarding packets to a specified device.
On the Destination MAC Filter Page of the AT-S105 Management
software, enter the MAC address of the device that you want to filter.
After the switch receives a packet, it examines the destination MAC
address of the packet. If the destination MAC address matches a
MAC address set in the filter, the software prevents the switch from
forwarding it and drops the packet.
You may want to block access to a device within your organization. For
instance, you may not want users on the Sales group switch to have
access to a server on the Accounting group switch. You can enter the
MAC address of the Accounting server as a destination MAC address filter
on the Sales group switch. When a packet destined for the Accounting
server is received by the Sales group switch, the switch drops the packet.
The Destination MAC Filter is a subset of the static MAC address. For
more information about MAC addresses, see Chapter 12, “Overview” on
page 136.