[Quick IP Filtering]

One way to restrict access to the machine is to allow only devices which are within the range of the machine.

Set the range of allowed IP addresses so that any devices which are not in range are denied access. The range of allowed IP addresses can be quickly and easily checked, making it an extremely useful function.

Tips

Configure the settings as detailed below to restrict the range of IP addresses that can communicate with the machine.

• [Administrator Setting] - [Network Setting] - [NIC Settings] - [TCP/IP Setting] - [IP Filtering (Permit Access)]/[IP Filtering (Deny Access)] (*Do not use [Quick IP Filtering])

The figure below is an example of simple IP filtering.

A: "Outside" of the allowed IP address range

B: "Within" the allowed IP address range

If using IPv4, only addresses which are within the permitted range of IP addresses are allowed. The subnet mask is fixed at 255.255.255.0.

If using IPv6, only IP addresses configured to the machine and IP addresses with the same high-order 64 bits are allowed access.

Tips

• As the subnet mask is fixed, [TCP/IP Setting], [IPv4 Settings] and [Subnet Mask] have no effect on this function.

<Example>

With Machine IP Address: 10.11.32.2

Range of IP Addresses with Access to System: 10.11.32.0 to 10.11.32.255

*: The subnet mask is fixed to 255.255.255.0

Use the subnet mask and IP address configured to the machine to allow access only to those within the range of IP address belonging to the same sub network.

<Example>

With Machine IP Address: 10.11.32.2, and Machine Subnet Mask: 255.255.248.0

Range of IP Addresses with Access to System: 10.11.32.0 to 10.11.39.255

Allow connections from all IP addresses without using the filtering function.

1

Press Utility/Counter, and then press in order of [Quick Security Setting] - [Quick IP Filtering].

2

Select [No Filtering], [Sync. IP Address], or [Sync. Subnet Mask].

• You can check which range is enabled.

3

Press [OK].