# Access Control
Device Management > Configuration > Security > Access Control

Specify the computers to be allowed access (print request, page displaying, etc.) to the machine.

Note

- Settings configured here relate to the following interfaces:
  Ethernet and wireless LAN.
- Access using the TCP/IP protocol is restricted.
  Restricted IP address computers cannot access Web Image Monitor. However, Remote Maintenance operations (mshell) are not restricted.
- Settings on this page can be changed by the following administrator:
  - Network Administrator

## Access Control

Specify whether to enable or disable Access Control.

## IPv4

To use IPv4, configure the following settings:

### Access Control Range 1 to Access Control Range 5

Enter the IPv4 address range of the computers to be allowed access to the machine.
Up to five sets of ranges can be entered. Access from addresses not included in these ranges is prohibited.
If specifying less than five sets, set the unspecified ranges to [0.0.0.0] - [0.0.0.0].
To allow access from all computers, set all ranges to [0.0.0.0]- [0.0.0.0].

## IPv6

To use IPv6, configure these settings.

### Access Control Range 1 to Access Control Range 5

Enter the IPv6 address range of the computers to be allowed access to the machine, using the IP address range or a combination of base address and mask.
Up to five sets of ranges or prefixes can be entered. Access from addresses not included in these ranges or prefixes is prohibited.
To specify a range, select Mask, enter the base address, and then enter the mask range in the Mask Length box using a value between 1 and 128.
If specifying less than five sets, set the unspecified ranges to [::] - [::].
To allow access from all computers, set all ranges to [::]- [::].

Note

- A multicast address cannot be defined as a base address.
- The default is 128 for Mask Length.

## Buttons

### Refresh

Click to update the currently displayed information.

Note

- Before making the settings, click Refresh to obtain the machine's current status.

### OK

Click to apply the settings.

### Cancel

Click to cancel the settings.

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