Canon PIXMA MX459 Online Manual page 180

Note
The two types of access control (i.e., by MAC address and by IP address) can be enabled
at the same time.
An access control type is enabled as long as the Enable printer access control check box is
selected, regardless of the type currently displayed by selecting in Printer Access Control
Type:.
When both access control types are enabled at the same time, a computer or a network
device whose address is registered to either list will be allowed access to the printer.
2. Accessible IP Addresses:
Shows the registered IP addresses and any comments.
3. Edit...
The Edit Accessible IP Address screen is displayed to edit the settings selected in Accessible
IP Addresses:.
Edit Accessible IP Address Screen/Add Accessible IP Address Screen
4. Add...
The Add Accessible IP Address screen is displayed to register the IP address of a computer or
a network device from which to access the printer over the network.
Important
Add the IP address of all computers or network devices within the network from which to
access the printer. The printer cannot be accessed from a computer or a network device that
is not on the list.
Up to 16 IP addresses can be registered. IP addresses specified by Range Specification
are counted as one address. Use Range Specification when you intend to register 17 or
more IP addresses.
5. Delete
Deletes the selected IP address from the list.