Canon MF419x User Manual page 556

[Outbound Filter]
Select to restrict sending data from the machine to a computer by specifying MAC addresses.
[Inbound Filter]
Select to restrict receiving data from the machine to a computer by specifying MAC addresses.
5
Specify the settings for packet filtering.
● Select the precondition (default policy) to allow or reject the communication of other devices with the
machine, and then specify MAC addresses for exceptions.
1
Select the [Use Filter] check box and click the [Reject] or [Allow] radio button for the [Default Policy].
[Use Filter]
Select the check box to restrict communication. Clear the check box to disable the restriction.
[Default Policy]
Select the precondition to allow or reject other devices to communicate with the machine.
[Reject]
[Allow]
Security
Select to pass communication packets only when they are sent to or received from
devices whose MAC addresses are entered in [Exception Addresses].
Communications with other devices are prohibited.
Select to block communication packets when they are sent to or received from
devices whose MAC addresses are entered in [Exception Addresses].
Communications with other devices are permitted.
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