Setting the Firewall

Set up the packet-filtering firewall to prevent unauthorized access.
First, as a prerequisite, set whether to allow or block communication with other devices. Next, specify the IP addresses or MAC addresses of devices you want to block or allow as exceptions.
For the number of addresses that can be specified and the protocols whose communication can be restricted, see the firewall specifications. Firewall
MAC address filtering is not available when connecting the machine to a wireless LAN.
Multicast and broadcast addresses are not restricted even when the setting is configured to block the sending of data from the machine to other devices.

Setting IP Address Filtering

Set IPv4 address filtering or IPv6 address filtering according to your usage environment.
This section describes how to configure the settings using Remote UI from a computer.
On the operation panel, select [Menu] in the [Home] screen, and then select [Preferences] to configure the settings. However, the operation panel can only be used to enable or disable the filter. [Firewall Settings]
Administrator privileges are required. The machine must be restarted to apply the settings.
If you set an incorrect IP address, you will no longer be able to access Remote UI. If this happens, use the operation panel to disable the firewall settings, and then use Remote UI to set the IP address again.
1
Log in to Remote UI in System Manager Mode. Starting Remote UI
2
On the Portal page of Remote UI, click [Settings/Registration]. Portal Page of Remote UI
3
Click [Network Settings] [Firewall Settings].
The [Firewall Settings] screen is displayed.
4
Click [Edit] for the IP address send or receive filter.
To restrict sending of data from the machine to other devices, click [Edit] for the send filter.
To restrict receiving of data from other devices, click [Edit] for the receive filter.
5
Select the [Use Filter] checkbox.
The IP address is enabled.
6
In [Default Policy], set the filtering prerequisites.
As a filtering prerequisite, select whether to allow or block communication with other devices.
7
Register [Exception Addresses].
In [Address to Register], enter an IP address, and then click [Add].
You can also specify a range of IP addresses by using a hyphen (-) or prefix length.
Input example:
One IPv4 address
192.168.0.10
One IPv6 address
fe80::10
Specifying a range
192.168.0.10-192.168.0.20
192.168.0.32/27
fe80::1234/64
8
Click [OK].
9
Restart the machine. Restarting the Machine
The settings are applied.

Setting MAC Address Filtering

This section describes how to configure the settings using Remote UI from a computer.
On the operation panel, select [Menu] in the [Home] screen, and then select [Preferences] to configure the settings. You cannot use the operation panel to configure some of the settings. [Firewall Settings]
Administrator privileges are required. The machine must be restarted to apply the settings.
If you set an incorrect MAC address, you will no longer be able to access Remote UI. If this happens, use the operation panel to disable the firewall settings, and then use Remote UI to set the MAC address again.
1
Log in to Remote UI in System Manager Mode. Starting Remote UI
2
On the Portal page of Remote UI, click [Settings/Registration]. Portal Page of Remote UI
3
Click [Network Settings] [Firewall Settings].
The [Firewall Settings] screen is displayed.
4
Click [Edit] for the MAC address send or receive filter.
To restrict sending of data from the machine to other devices, click [Edit] for the send filter.
To restrict receiving of data from other devices, click [Edit] for the receive filter.
5
Select the [Use Filter] checkbox.
The MAC address is enabled.
6
In [Default Policy], set the filtering prerequisites.
As a filtering prerequisite, select whether to allow or block communication with other devices.
7
Register [Exception Addresses].
In [Address to Register], enter a MAC address, and then click [Add].
Enter MAC addresses without separating with hyphens (-) or colons (:).
Input example:
123A456B789C
8
Click [OK].
9
Restart the machine. Restarting the Machine
The settings are applied.
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